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  • Inorganic Chemistry  (6,876)
  • Computer Programming and Software
  • Geophysics
  • Seismology
  • 2015-2019  (1,179)
  • 2000-2004  (3,461)
  • 1980-1984  (3,896)
  • 1935-1939  (3,392)
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  • 1
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    Global Cloud-Resolving Models (2019)
    In:  CASI
    Details
    Publication Date: 2019-05-25
    Description: Global cloud-resolving models (GCRMs) are a new category of atmospheric global models designed to solve different flavors of the nonhydrostatic equations through the use of kilometer-scale global meshes. GCRMs make it possible to explicitly simulate deep convection, thereby avoiding the need for cumulus parameterization and allowing for clouds to be resolved by microphysical models responding to grid-scale forcing. GCRMs require high-resolution discretization over the globe, for which a variety of mesh structures have been proposed and employed. The first GCRM was constructed 15 years ago, and in recent years, other groups have also begun adopting this approach, enabling the first intercomparison studies of such models. Because conventional general circulation models (GCMs) suffer from large biases associated with cumulus parameterization, GCRMs are attractive tools for researchers studying global weather and climate. In this review, GCRMs are described, with some emphasis on their historical development and the associated literature documenting their use. The advantages of GCRMs are presented, and currently existing GCRMs are listed and described. Future prospects for GCRMs are also presented in the final section.
    Keywords: Geophysics
    Type: GSFC-E-DAA-TN69066 , Current Climate Change Reports (e-ISSN 2198-6061)
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  • 2
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    Cumulus: A Community of Collaboration (2019)
    In:  CASI
    Details
    Publication Date: 2019-07-20
    Description: Cumulus is an open source platform used for ingesting and maintaining archives in the cloud. Sharing and maximizing code re-use are pillars of Cumulus development. Cumulus aims to promote collaboration within the community. This presentation will dive into the principles of Cumulus development, both within the team and the community.
    Keywords: Computer Programming and Software
    Type: GSFC-E-DAA-TN64441 , Earth Science Information Partners (ESIP) 2019 Winter Meeting; Jan 14, 2019 - Jan 17, 2019; Bethesda, MD; United States
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  • 3
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    Introduction to Multicasting (2019)
    In:  CASI
    Details
    Publication Date: 2019-07-20
    Description: This is a presentation for students who will be participating in the App Development Challenge (ADC). This discussion tells the students the data format NASA will be using (which their software must be compatible with). This presentation contains only publicly available images and information, and is provided to help the students with their coding (that they will submit to NASA).
    Keywords: Computer Programming and Software
    Type: JSC-E-DAA-TN66531
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  • 4
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    Quantifying the Influence of Redox Conditions on the Seismic Properties of Olivine (2019)
    In:  CASI
    Details
    Publication Date: 2019-07-19
    Description: A series of eight olivine specimens were fabricated by hot-pressing at 1200 degrees Celsius and 300 megapascals (MPa). Each hot-pressed specimen was then wrapped in Pt, Ni or NiFe foil to vary oxygen fugacity (fO2), and interrogated via forced torsional oscillation. Mechanical testing was conducted at 10 oscillation periods between 1 and 1000 seconds, at a confining pressure of 200 MPa, during a slow staged-cooling from a maximum temperature of 1200 degrees Celsius to room temperature. After mechanical testing, each specimen was axially sectioned and EBSD (Electron BackScatter Diffraction) was used for the determination of the representative grain size, and grain size distribution of each sample. In addition, each longitudinal section was mapped via FTIR (Fourier Transform InfraRed spectroscopy) to determine the spatial distribution and concentrations of chemically bound and molecular water. Amongst these specimens, chemically bound water contents were observed to vary between 0 and 1150 atom ppm (parts per million) H/Si, and molecular water concentrations varied between 0 and 245 atom ppm H/Si. Our forced-oscillation results demonstrate that the measured magnitude of anelastic relaxation within the experimental window of oscillation periods is unrelated to the water content. Rather, a relationship was observed between the magnitude of anelastic relaxation and the prevailing redox conditions, which is influenced by the choice of metal sleeving used during the mechanical test. Further, regardless of water content or metal sleeving, each specimen exhibits coupled variations in shear modulus and dissipation within the observational window, indicative of high-temperature background behavior, that can be described by a Burgers-type model. During initial fitting of the Burgers models, the unrelaxed shear modulus at a reference temperature of 900 degrees Celsius (G (sub UR)) and the temperature derivative of the unrelaxed shear modulus (dG (sub U)/dT), were treated as adjustable parameters. For all Fe-bearing olivine samples (but not a hydrous and oxidized Fe-free sample) we observe deficits of G (sub UR), and increased values of dG (sub U)/dT, relative to the expected elastic (anharmonic) behavior of Fo90 olivine. This behavior is indicative of anelastic relaxation occurring at shorter periods than observable within the window of oscillation periods used in the mechanical test. Moving towards a comprehensive seismologically applicable Burgers model, which includes this newly observed effect of redox conditions on anelastic relaxation, we will present our progress in reconciling truly anharmonic and elastic behavior of Fo (sub 90) olivine with our observed forced-oscillation data.
    Keywords: Geophysics
    Type: EGU 2019-3539 , JSC-E-DAA-TN66268 , Geophysical Research Abstracts (GRA) (ISSN 0094-8276) (e-ISSN 1944-8007); 21|European Geosciences Union General Assembly (EGU 2019); 7ý12 Apr. 2019; Vienna; Austria
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  • 5
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    A Comparison of ARTEMIS Data with the Lunar Plasma Design Environment for NASA Crewed Missions (2019)
    In:  CASI
    Details
    Publication Date: 2019-07-19
    Description: No abstract available
    Keywords: Computer Programming and Software
    Type: M19-7365 , Applied Space Environments Conference; May 12, 2019 - May 17, 2019; Los Angeles, CA; United States
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  • 6
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    Opportunities for Accelerating Research in the Cloud (2019)
    In:  CASI
    Details
    Publication Date: 2019-07-25
    Description: As the data holdings of the Earth Observation System Data and Information System expand over the next several years, the typical data analysis process of downloading data to local compute resources will become increasingly inefficient. However, cloud computing promises to mitigate that by allowing the user to process close to the data. These improvements will be obtained via a variety of mechanisms: 1 - improving the ability of data transformation services to reduce the data prior to analysis; 2 - providing cloud-native analysis capabilities for common analysis functions; and 3 - providing the ability to work directly with data in Web Object Storage.
    Keywords: Computer Programming and Software
    Type: GSFC-E-DAA-TN70319 , 2019 Earth Science Information Partners Summer Meeting; Jul 16, 2019 - Jul 19, 2019; Tacoma, WA; United States
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  • 7
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    OPeNDAP Clients, Aggregation and S3 (2019)
    In:  CASI
    Details
    Publication Date: 2019-07-23
    Description: In this talk, we will discuss our work for testing OPeNDAP client access of data stored in the Amazon S3 cloud storage using a set of common analysis tools including Panoply, Jupyter Notebooks with Python xarray, NCO command line tool package, ArcGIS, and GDAL. We will also discuss our ongoing work on improving performance in Hyrax aggregation functionality.
    Keywords: Computer Programming and Software
    Type: GSFC-E-DAA-TN69932 , 2019 Earth Science Information Partners (ESIP) Summer Meeting; Jul 16, 2019 - Jul 19, 2019; Tacoma, WA; United States
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  • 8
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    Testing Fortran Software with pFunit (2019)
    In:  CASI
    Details
    Publication Date: 2019-07-20
    Description: Over the past two decades, the emergence of highly effective software testing frameworks has greatly simplified the development and use of unit tests and has led to new software development paradigms such as test driven development (TDD). However, technical computing introduces a number of unique testing challenges, including distributed parallelism and numerical accuracy. This webinar will begin with a basic introduction to the use of pFUnit (parallel Fortran Unit testing framework) to develop tests for Message Passing Interface (MPI) plus Fortran (MPI+Fortran) software and then present some of the new capabilities in the latest release. We will also discuss some specialized methodologies for testing numerical algorithms and speculate about future framework capabilities that may improve our ability to test at exascale.
    Keywords: Computer Programming and Software
    Type: GSFC-E-DAA-TN67643 , Best Practices for HPC Software Developers (Webinar); Apr 12, 2019; Online - Remote
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  • 9
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    Titanium-in-Quartz Geothermometry of Impactites and Peak-Ring Lithologies from the Chicxulub Impact Crater (2019)
    In:  CASI
    Details
    Publication Date: 2019-07-20
    Description: Since its development by Wark and Watson (2006), the Ti-in-quartz geothermometer (TitaniQ) has been continuously refined and applied to a variety of lithologies from different crustal settings. Assuming quartz crystallized and incorporated Ti under equilibrium conditions and providing TiO2 activity (alpha (sub TiO2)) is reasonably constrained, crystallization temperatures at typical crustal pressures can be calculated. In turn, when crystallization temperatures are independently constrained, Ti-in-quartz can be used as a geobarometer. Here we explore the application of this technique to impact lithologies. Quartz is ubiquitous in terrestrial impact structures in upper crustal settings and can also form as a post-impact hydrothermal mineral. Together with other geothermometers, such as Ti-in-zircon, Ti-in-quartz can potentially help constrain the temperature-pressure conditions during the formation of the pre-impact target rock at terrestrial impact structures, as well as impact-produced and hydrothermally-altered lithologies. This work presents the first systematic Ti-in-quartz study of impactites and granitoid target rocks from the approximately180-kilometer-diameter, end-Cretaceous Chicxulub crater on the Yucatan Peninsula, Mexico, thereby placing new constraints on the emplacement of felsic plutons within the Maya Block in the Paleozoic, impact melt crystallization at approximately 66 Ma (million years ago), and post-impact hydrothermal overprint inside the Chicxulub crater.
    Keywords: Geophysics
    Type: LPI Contrib. No. 2132 , JSC-E-DAA-TN65671 , Lunar and Planetary Science Conference (LPSC 2019); 18ý22 Mar. 2019; The Woodlands, TX; United States
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  • 10
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    Web Development: Its Not a Bug, Its a Feature (2019)
    In:  CASI
    Details
    Publication Date: 2019-07-20
    Description: An intern presentation on web application development and website design.
    Keywords: Computer Programming and Software
    Type: KSC-E-DAA-TN62472
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  • 11
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    Smart Handoffs: Defining Spatial and Temporal Parameters with Schema.org (2019)
    In:  CASI
    Details
    Publication Date: 2019-07-25
    Description: No abstract available
    Keywords: Computer Programming and Software
    Type: GSFC-E-DAA-TN70409 , 2019 ESIP Summer Meeting; Jul 16, 2019 - Jul 19, 2019; Tacoma, WA; United States
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  • 12
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    Model-Based Enterprise Capabilities Matrix (2019)
    In:  CASI
    Details
    Publication Date: 2019-07-20
    Description: No abstract available
    Keywords: Computer Programming and Software
    Type: M18-7144-1 , Annual International Council on Systems Engineering (INCOSE) International Workshop; Jan 26, 2019 - Jan 29, 2019; Torrance, CA; United States
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  • 13
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    Astrobee Robot Software: Enabling Mobile Autonomy on the ISS (2019)
    In:  CASI
    Details
    Publication Date: 2019-07-25
    Description: Astrobee is a new free-flyer robot designed to operate inside the International Space Station (ISS). Astrobee capabilities include markerless navigation, autonomous docking for recharge, perching on handrails to minimize power and modular payloads. Astrobee will operate without crew support, controlled by teleoperation, plan execution, or on-board third parties software. This slides presents the Astrobee Robot Software, a NASA Open-Source project, powering the Astrobee robot.The Astrobee Robot Software relies on a distributed architecture based on the Robot Operating System (ROS). We present the software approach, infrastructure required, and main software components.
    Keywords: Computer Programming and Software
    Type: ARC-E-DAA-TN68686 , Lecture at the Naval Postgraduate School; May 10, 2019; Monterey, CA; United States
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  • 14
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    Possible Role for Tectonics in the Evolving Stability of the Greenland Ice Sheet (2019)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The history of the Greenland Ice Sheet has been influenced by the geodynamic response to ice sheet fluctuations, and this interaction may help explain past deglaciations under modest climate forcing. We hypothesize that when the Iceland hot spot passed beneath northcentral Greenland, it thinned the lithosphere and left anomalous heat likely with partially melted rock; however, it did not break through the crust to supply voluminous flood basalts. Subsequent PlioPleistocene glacialinterglacial cycles caused large and rapidly migrating stresses, driving dike formation and other processes that shifted melted rock toward the surface. The resulting increase in surface geothermal flux favored a thinner, fasterresponding ice sheet that was more prone to deglaciation. If this hypothesis of control through changes in geothermal flux is correct, then the longterm (10 (sup 5) to 10 (sup 6) years) trend now is toward lower geothermal flux, but with higherfrequency (less than or equal to 10( sup 4) to 10 (sup 5) years) oscillations linked to glacialinterglacial cycles. Whether the geothermal flux is increasing or decreasing now is not known but is of societal relevance due to its possible impact on ice flow. We infer that projections of the future of the ice sheet and its effect on sea level must integrate geologic and geophysical data as well as glaciological, atmospheric, oceanic, and paleoclimatic information.
    Keywords: Geophysics
    Type: GSFC-E-DAA-TN65582 , Journal of Geophysical Research Earth Surface (ISSN 2169-9003) (e-ISSN 2169-9011); 124; 1; 97-115
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  • 15
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    Debris Assessment Software User's Guide: Version 3.0 (2019)
    In:  CASI
    Details
    Publication Date: 2019-07-30
    Description: The Debris Assessment Software (DAS) is provided by the NASA Orbital Debris Program Office as a means of assessing, during the planning and design phase, space missions compliance with NASAs requirements for reduction of orbital debris.
    Keywords: Computer Programming and Software
    Type: JSC-E-DAA-TN70236 , NASA/TP-2019-220300
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  • 16
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    How Qualitative Data Drives Design at NASA (2019)
    In:  CASI
    Details
    Publication Date: 2019-07-27
    Description: There's a lot of paperwork to go to space! Building tools to help the folks "behind the scenes" at NASA takes a deep understanding of their complex worlds. In this lightning talk, David Luetger will discuss how San Jose State University Research Foundation at NASA Ames used qualitative data to support NASA's Space Launch System program, and introduced a new set of stakeholders to user-centered design.
    Keywords: Computer Programming and Software
    Type: ARC-E-DAA-TN69120 , Code for America Summitt; May 29, 2019 - May 31, 2019; Oakland, CA; United States
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  • 17
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    Machine Learning Prototype App For Recognition of Fruits (2019)
    In:  CASI
    Details
    Publication Date: 2019-08-24
    Description: As the incidence of obesity and associated negative health consequences is rising, it becomes crucial to monitor the dietary choices of individuals. Unfortunately, traditional methods to collect this information involve collecting food frequency questionnaires from individuals using paper. Electronic food trackers have been developed to collect food data, but they require participants to manually label and describe the content of their meals, and which may be difficult for researchers to interpret in a standardized fashion. Machine learning, however, provides an easy and efficient method for both participants and researchers to label food items with standardized descriptions. This project aims to create a prototype phone application that can identify and label photos of apples. This is done by making a machine learning model through Turicreate, a python module, which is then implemented into an iOS app through Xcode and Swift. The modules used in Swift include CoreML and AVFoundation. This machine learning application will be incorporated with a MealLogger phone app that is also under development. The MealLogger app will be used to keep track of participants' calorie intake and other personal details throughout the sleep study. The machine learning model will present several potential identities of the foods found in the photo, and the user will only need to select the correct option. This will be a user-friendly method for participants to easily log their food consumption without the hard work of manually inputting each and every description. Some limitations to this project include the wide variety of food, including those within different cultures. To deal with this, the model will include the most generic food categories, which the participant may select, and produce a drop-down menu of more specific dishes under that specified category, with the option of self-input. Additional questionnaires may be implemented according to the food type selected This will allow the process to be quick and easy, but also specific for the purpose of analysis. The release of the application will require a much longer process, but the machine learning prototype presents a first step toward an application that may change data analysis for researchers interested in collecting food intake from individuals living in the real world.
    Keywords: Computer Programming and Software
    Type: ARC-E-DAA-TN72473
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  • 18
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    Evaluation of Various Methods for Determining Bulk Compositions of Chondrules and Other Objects in Petrographic Thin Sections (2019)
    In:  CASI
    Details
    Publication Date: 2019-08-17
    Description: Studies of many objects in petrographic thin section, such as melt inclusions in igneous rocks, chondrules and Ca-Al rich inclusions in chondritic meteorites, or clasts in lunar and other breccias, require or can benefit from knowledge of their bulk compositions. Given the scarcity of these materials, the reluctance of curators to provide more abundant material, and the extreme difficulty of cleanly separating such objects from their rock matrices, geochemical and cosmochemical studies need the ability to determine their bulk compositions from in situ methods, such as defocused beam analysis, or quantitative chemical mapping by electron beam methods.
    Keywords: Geophysics
    Type: JSC-E-DAA-TN69198 , Microscopy & Microanalysis Meeting (M&M 2019); Aug 04, 2019 - Aug 08, 2019; Portland, OR; United States
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  • 19
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    Genetic Relationship Between Martian Chassignites and Nakhlites Revealed from Noble Gases (2019)
    In:  CASI
    Details
    Publication Date: 2019-08-17
    Description: A group called as Martian meteorites is composed of shergottites, nakhlites, chassignites, and orthopyroxenite, and they are thought to be derived from Mars. Among the Martian meteorites nakhlites and chassignites show similar cosmic-ray exposure (CRE) ages of 11-12 million years, although petrologic characteristics are very different between them. Both nakhlites and chassignites indicate similar cooling rates, and would have cooled in identical scale of igneous bodies. However, the relationship between nakhlites and chassignites is still unclear, although they might have ejected at the same time, i.e., by accidentally coincidental impact events which occurred at different places on Mars or by a single impact which excavated both nakhlites and chassignites residing in a relatively small area. Here we propose that the chassignites show a genetically close relationship with nakhlites, i.e., both groups could be located within a relatively narrow area from where a single impact could have launched those meteorites, based on noble gas data obtained in our laboratory. If chassignites were really ejected with nakhlites by a single impact, both types of meteorites will provide us with geological/petrological profile in the area where both pyroxene-rich lava (nakhlites) and dunite-rich rocks (chassignites) are located close to the Martian surface. [i.e. discusses NWA 2737, etc. (Martian meteorites that fell in Northwest Africa)]
    Keywords: Geophysics
    Type: JSC-E-DAA-TN68238 , Annual Meeting of the Meteoritical Society (MetSoc 2019); Jul 07, 2019 - Jul 12, 2019; Sapporo, Hokkaido; Japan
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  • 20
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    The Influence of Redox Conditions on the Seismic Properties of Polycrystalline Olivine (2019)
    In:  CASI
    Details
    Publication Date: 2019-08-16
    Description: Eight olivine specimens were fabricated by use of a solgel method and hot-pressing at 1200 degrees Centigrade and 300 megapascals (MPa) inside of welded Pt capsules. Each hot-pressed specimen was then recovered, precision ground, and wrapped in Pt, Ni or NiFe foil to vary oxygen fugacity (fO2) during the subsequent forced torsional oscillation measurements. Mechanical testing was conducted at 10 oscillation periods between 1 and 1000 seconds, at a confining pressure of 200 MPa, during a slow staged-cooling from a maximum temperature of 1200 degrees Centigrade down to room temperature. After mechanical testing, each specimen was axially sectioned and EBSD (Electron BackScatter Diffraction) was used for the determination of the representative grain size, and grain size distribution of each sample. In addition, each longitudinal section was mapped via FTIR (Fourier Transform Infrared Spectroscopy) to determine the spatial distribution and concentrations of chemically bound and molecular water. Amongst these eight specimens, chemically bound water contents were observed to vary between 0 and 1150 atom parts per million (ppm) H/Si, and molecular water concentrations varied between 0 and 245 atom ppm H/Si. Our forced-oscillation results demonstrate that the measured magnitude of anelastic relaxation within the experimental window of oscillation periods is unrelated to the water content. Rather, a relationship was observed between the magnitude of anelastic relaxation and the prevailing redox conditions, which is influenced by the choice of metal sleeving used during the mechanical test. Further, regardless of water content or metal sleeving, each specimen exhibits coupled variations in shear modulus and dissipation within the observational window, indicative of high-temperature background behavior, that can be described by a Burgers-type model. During initial fitting of the Burgers models, the unrelaxed shear modulus at a reference temperature of 900C (elastic unloading/reloading shear modulus G (sub UR)) and the temperature derivative of the unrelaxed shear modulus (dGU/dT), were treated as adjustable parameters. For all Fe-bearing olivine samples we observe deficits of G (sub UR) and increased values of dGU/dT, relative to the expected elastic (anharmonic) behavior for Fo (Forsterite content percentage) (sub 90) olivine. This behavior is indicative of anelastic relaxation occurring at shorter periods than observable within the window of oscillation periods used in the mechanical test. Moving towards a comprehensive and seismologically applicable Burgers model, which includes this newly observed effect of redox conditions on anelastic relaxation, we will present our progress on reconciling truly anharmonic and elastic behavior of Fo (sub 90) olivine with our observed forced-oscillation data.
    Keywords: Geophysics
    Type: JSC-E-DAA-TN70052 , Consortium for Materials Properties Research in Earth Sciences Annual Meeting (COMPRES 2019); Aug 02, 2019 - Aug 05, 2019; Big Sky, MT
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  • 21
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    Reassessment of Electromagnetic Core-Mantle Coupling and Its Implications to the Earth's Decadal Polar Motion (2019)
    In:  Other Sources
    Details
    Publication Date: 2019-08-29
    Description: The observed Earth's polar motion on decadal time scales has long been conjectured to be excited by the exchange of equatorial angular momentum between the solid mantle and the fluid outer core, via the mechanism of electromagnetic (EM) core-mantle coupling. However, past estimations of the EM coupling torque from surface geomagnetic observations is too weak to account for the observed decadal polar motion. Our recent estimations from numerical geodynamo simulations have shown the opposite. In this paper, we re-examine in detail the EM coupling mechanism and the properties of the magnetic field in the electrically conducting lower mantle (characterized by a thin D-layer at the base of the mantle). Our simulations find that the toroidal field in the D-layer from the induction and convection of the toroidal field in the outer core could be potentially much stronger than that from the advection of the poloidal field in the outer core. The former, however, cannot be inferred from geomagnetic observations at the Earth's surface, and is missing in previous EM torque estimated from geomagnetic observations. Our deduction suggests further that this field could make the actual EM coupling torque sufficiently strong, at approximately 5 10(exp 19) Nm, to excite, and hence explain, the decadal polar motion to magnitude of approximately 10 mas.
    Keywords: Geophysics
    Type: GSFC-E-DAA-TN72348 , Geodesy and Geodynamics (e-ISSN 1674-9847); 10; 5; 356-362
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  • 22
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    Oxidation of the Mantle Wedge by H+ in Aqueous Fluids: A New Interdisciplinary Approach (2019)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The observation that arc magmas are the most oxidized on Earth have led petrologists to question whether the subduction process might cause oxidation of the sub-arc mantle source. A strong correlation between the input of slab-derived aqueous fluid and Fe3(+)/Fe in arc magmas has led to the hypothesis that slab fluids may facilitiate the transfer of redox potential from oxidized slab material to mantle wedge and subsequently to primary arc melts. Despite this intuitive link, identifying an efficient and ubiquitous chemical process to transfer oxidation state in slab fluids has been challenging. Pure H2O alone is an inefficient oxidizer in the mantle, necessitating another oxidant within the fluid. Commonly invoked components include S or C, which are likely heterogeneously distributed within subducting slabs, and direct transfer of Fe3(+), which is only possible in very solute-rich fluids. Here we present a new mechanism to explain the oxidation of the sub-arc mantle by slab-derived aqueous fluid, wherein dissolved H(+)(aq) is reduced to H2(aq). Redox equilibrium is satisfied by electron transfer from Fe2(+)(s), which is oxidized in the rock to Fe3(+)(s) in the reaction: 2Fe2(+)(s) + 2H(+)(aq) = 2Fe3(+)(s) + H2(aq). This simple reaction was previously overlooked due to the assumption that all H must be bound by H2O molecules (i.e., no dissolved H), applicable to a pure H2O fluid, but not one with a solute load as addressed here. The application of thermodynamic modeling tools from aqueous geochemistry (DEW, EQ3/6) to mantle petrology predicts this reaction between mantle rock and slab fluid with our own experimentally constrained chemistry and fO2 (QFM+2). Mass transfer model results show an increase in Fe3(+)/Fe in mantle rock from MORB- like (0.15) to arc-like (0.20.3) values at reasonable fluid fluxes, co-incident with increasing H2 activity in the fluid. This can explain the stark correlation between slab fluid input into the mantle wedge and the observed fO2 of arc magmas. Moreover, it does not require diffusion of hydrogen out of the system. Instead, H2 remains dissolved in fluid in equilibrium with oxidized mantle rock.
    Keywords: Geophysics
    Type: JSC-E-DAA-TN67364 , GOLDSCHMIDT; Aug 18, 2019 - Aug 23, 2019; Barcelona; Spain
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  • 23
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    LandAtmosphere Feedbacks Exacerbate Concurrent Soil Drought and Atmospheric Aridity (2019)
    In:  Other Sources
    Details
    Publication Date: 2019-09-21
    Description: Compound extremes such as cooccurring soil drought (low soil moisture) and atmospheric aridity (high vapor pressure deficit) can be disastrous for natural and societal systems. Soil drought and atmospheric aridity are 2 main physiological stressors driving widespread vegetation mortality and reduced terrestrial carbon uptake. Here, we empirically demonstrate that strong negative coupling between soil moisture and vapor pressure deficit occurs globally, indicating high probability of cooccurring soil drought and atmospheric aridity. Using the Global Land Atmosphere Coupling Experiment (GLACE)-CMIP5 experiment, we further show that concurrent soil drought and atmospheric aridity are greatly exacerbated by land atmosphere feedbacks. The feedback of soil drought on the atmosphere is largely responsible for enabling atmospheric aridity extremes. In addition, the soil moistureprecipitation feedback acts to amplify precipitation and soil moisture deficits in most regions. CMIP5 models further show that the frequency of concurrent soil drought and atmospheric aridity enhanced by landatmosphere feedbacks is projected to increase in the 21st century. Importantly, land atmosphere feedbacks will greatly increase the intensity of both soil drought and atmospheric aridity beyond that expected from changes in mean climate alone.
    Keywords: Geophysics
    Type: GSFC-E-DAA-TN72966 , Proceedings of the National Academy of Sciences (ISSN 0027-8424) (e-ISSN 1091-6490); 116; 38; 18,848-18,853
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    High-End Computing Overview (2019)
    In:  CASI
    Details
    Publication Date: 2019-10-30
    Description: No abstract available
    Keywords: Computer Programming and Software
    Type: ARC-E-DAA-TN72380
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    Joint 3D-Wind Retrievals with Stereoscopic Views from MODIS and GOES (2019)
    In:  Other Sources
    Details
    Publication Date: 2019-10-23
    Description: Atmospheric motion vectors (AMVs), derived by tracking patterns, represent the winds in a layer characteristic of the pattern. AMV height (or pressure), important for applications in atmospheric research and operational meteorology, is usually assigned using observed IR brightness temperatures with a modeled atmosphere and can be inaccurate. Stereoscopic tracking provides a direct geometric height measurement of the pattern that an AMV represents. We extend our previous work with multi-angle imaging spectroradiometer (MISR) and GOES to moderate resolution imaging spectroradiometer (MODIS) and the GOES-R series advanced baseline imager (ABI). MISR is a unique satellite instrument for stereoscopy with nine angular views along track, but its images have a narrow (380 km) swath and no thermal IR channels. MODIS provides a much wider (2330 km) swath and eight thermal IR channels that pair well with all but two ABI channels, o e ring a rich set of potential applications. Given the similarities between MODIS and VIIRS, our methods should also yield similar performance with VIIRS. Our methods, as enabled by advanced sensors like MODIS and ABI, require high-accuracy geographic registration in both systems but no synchronization of observations. AMVs are retrieved jointly with their heights from the disparities between triplets of ABI scenes and the paired MODIS granule. We validate our retrievals against MISR-GOES retrievals, operational GOES wind products, and by tracking clear-sky terrain. We demonstrate that the 3D-wind algorithm can produce high-quality AMV and height measurements for applications from the planetary boundary layer (PBL) to the upper troposphere, including cold-air outbreaks, wildfire smoke plumes, and hurricanes.
    Keywords: Geophysics
    Type: GSFC-E-DAA-TN74042 , Remote Sensing (ISSN 2072-4292) (e-ISSN 2072-4292); 11; 18
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    Model-Based Enterprise Capabilities Matrix (2019)
    In:  CASI
    Details
    Publication Date: 2019-09-05
    Description: No abstract available
    Keywords: Computer Programming and Software
    Type: M19-7475-1 , International Council on Systems Engineering (INCOSE); Jul 20, 2019 - Jul 25, 2019; Orlando, FL; United States
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    Temperature Tuned FOSS Software (2019)
    In:  CASI
    Details
    Publication Date: 2019-12-31
    Description: This presentation covers the implementation of the FOSS software for the temperature tuned system.
    Keywords: Computer Programming and Software
    Type: AFRC-E-DAA-TN76557
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    Heat Analysis Manager (HAM), a Thermal Desktop API Based Heat Map Generation Software (2019)
    In:  CASI
    Details
    Publication Date: 2019-09-07
    Description: Thermal engineers often create custom heat maps to analyze their thermal model. However, generating a heat map is difficult because thermal simulation only readily provide attributes of simulated nodes such as temperature, capacitance, heat generation, and a network of conductances. Heat flow values are a derived quantity from the nodal attributes, and the data processing and management of heat flow between nodes quickly become difficult for large models. Deriving a network of heat flow values requires vast amount of calculations and data handling, heat map generation process generally suffers from processing speed, loss of accuracy, and/or presentation of data in a useful format. Heat Analysis Manager (HAM) is a Thermal Desktop (TD) based free multi-purpose tool developed to aid thermal engineers in analyzing their thermal model, including a heat map generation functionality. HAMs heat map generator retains accuracy and fast processing speed by utilizing TDs application programming interface (API) and built-in TDs Qflow from Results. Furthermore, HAMs heat map output is presented in an easily customizable format in Excel, allowing users to create various custom visual heat maps. A full description of how HAM utilizes TDs API to create a customizable heat map is provided. A simple model demonstration is included along with step-by-step procedures on creating custom heat maps. HAMs heat map result has been verified against TDs and other heat map generation software, and verification methods are also included.
    Keywords: Computer Programming and Software
    Type: GSFC-E-DAA-TN70479 , Thermal & Fluids Analysis Workshop (TFAWS 2019); Aug 26, 2019 - Aug 30, 2019; Hampton, VA; United States
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    Generalized Fluid System Simulation Program (GFSSP) Training Course 05: Pre & Post Processor, Part 2 (2019)
    In:  Other Sources
    Details
    Publication Date: 2019-09-06
    Description: A demonstration of the Visual Thermo-fluid dynamic Analyzer for Systems and Components (VTASC) computer program designed to efficiently build flow network models for use in the GFSSP program.
    Keywords: Computer Programming and Software
    Type: M19-7528
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    Service Metadata Refactoring- Status Update (2019)
    In:  CASI
    Details
    Publication Date: 2019-10-16
    Description: Presentation giving a status update on the refactoring of the Unified Metadata Model for Services, including changes to UMM-S and the creation of a UMM-Tools.
    Keywords: Computer Programming and Software
    Type: GSFC-E-DAA-TN72987 , Meeting of the Working Group on Information Systems and Services; Oct 08, 2019 - Oct 11, 2019; Hanoi; Viet Nam
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    Designing the User Experience for Earth Observation Data Services in the Cloud (2019)
    In:  CASI
    Details
    Publication Date: 2019-10-16
    Description: NASA's Earth Observation (EO) inventory is projected to grow by an order of magnitude over the next 5-6 years. The current mode for working with EO data of downloading the data to a local machine (laptop, desktop or server) will be difficult to sustain for these upcoming volumes. Therefore, NASA is in the process of developing a capability to host large volume data in commercial cloud, with an eye toward encouraging data analysis in the cloud. However, in order for the user community to take advantage of this new mode of data interaction, the user experience must be redesigned. Cloud-hosted data brings new challenges, such as managing the costs of data egress and working with data in Web Object Storage instead of a Posix filesystem. However, it also brings new opportunities. Scaling data transformation processes may permit more synchronous data services with near-immediate response vs. cumbersome ordering systems with latencies of hours or days. Data co-location in the cloud can facilitate data integration and fusion. Highly scalable filesystems and databases in the cloud support data reorganization to facilitate analysis at scale. In the course of NASA's reimagining of the User Experience for EO data usage relies on end user input gathered through surveys, workshops and meetings (such as this). At the same time, we have embarked on a course of pedagogy and capacity building to help the user community evolve to cloud-based analysis.
    Keywords: Computer Programming and Software
    Type: GSFC-E-DAA-TN72951 , PECORA 21/ ISRSE 38; Oct 06, 2019 - Oct 11, 2019; Baltimore, MD; United States
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    Model Based Engineering for Software Assurance (2019)
    In:  CASI
    Details
    Publication Date: 2019-10-11
    Description: NASA's successful development of next generation space vehicles, habitats, and robotic systems will require reliable hardware and software systems. The aim of this initiative is to develop modeling methodology and tools to support Model-Based Systems Engineering (MBSE) for software assurance and reliability analysis. This effort expands the Unified Modeling Language (UML) software design models to include fault data for the extraction of Failure Modes and Effects Criticality Analysis (FMECA) and Fault Tree Analysis (FTA) for software. We explored different modeling approaches to integrate the UML software design models with the Systems Modeling Language (SysML) system models to generate an integrated model and reliability tools that take into account software and hardware interfaces.The benefits of this concept directly affect the safety community with quick turnarounds to produce software assurance and reliability analysis artifacts and the ability to visualize failure effects, both hardware and software. The result is enhanced system design integrity and early identification of system risks. This initiative will enable software assurance activities early in the system design lifecycle, facilitating the discovery of design weaknesses and enhancing the capability to produce safe, hazard-free systems
    Keywords: Computer Programming and Software
    Type: JSC-E-DAA-TN73329 , Software Product Assurance and Engineering Workshop; Oct 01, 2019 - Oct 04, 2019; Toulouse; France
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    Structure Deformation Calculation Program Based on Displacement Theory for Shape Predictions (2019)
    In:  CASI
    Details
    Publication Date: 2019-10-09
    Description: Separated programs were written in C/C++ to validate the Displacement Transfer Functions. The Structure Deformation Calculation Program was written to combine all of the programs to calculate deformed shapes of a structure using surface strain data and structural geometrical parameters. Users do not need to know the material properties, nor the complex internal structures geometry because the Displacement Theory is purely geometrical in nature. Users only need to know the structure types as defined in this report and information such as the structure length, depth factors, number of strain sensors, and the surface strains measured at the strain-sensing stations installed on the structures. Depending on the structure type, an applicable Displacement Transfer Function will be used. This program requires two input files created by users; the recorded strain data file in comma-separated values format and the structure geometry data file in text format. The program will output the out-of-plane deflections, slopes, cross-sectional twist angles, and depth factors if applicable. All output files are created in comma-separated values format. A section in this report describes step-by-step procedures on how to use the Structure Deformation Calculation Program for structure deformed shape calculations.
    Keywords: Computer Programming and Software
    Type: NASA/TM–2019–220221 , AFRC-E-DAA-TN57407
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    Ramp Traffic Console (RTC) Ramp Manager Traffic Console (RMTC) User Manual (2019)
    In:  CASI
    Details
    Publication Date: 2019-10-08
    Description: This document serves as a user manual for the Ramp Traffic Console (RTC) Version 4.6.0 in the Ramp Control Tower. It describes the elements of the RTC interface and provides explanations for how to utilize RTC to manage ramp traffic. RTC provides live data for all flights including Earliest Off-Block Times (EOBTs) and Traffic Management Initiatives (TMIs). RTC augments management of ramp traffic by providing notifications of runway configurations, and lists flight arrivals, near arrivals, and departures as additional sources of information. This document also provides instructions for use of the Ramp Manager Traffic Console (RMTC) for Ramp Manager functions, such as adjusting the priority flight list and setting the ramp status. The RTC/RMTC ramp tools are components of the NASA Airspace Technology Demonstration 2 (ATD-2) sub-project.
    Keywords: Computer Programming and Software
    Type: ARC-E-DAA-TN73457
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    Implementing Polar Projections with OGC Services for the Enhancement of AIRS NRT Visualization in LANCE (2019)
    In:  CASI
    Details
    Publication Date: 2019-12-31
    Description: The Atmospheric Infrared Sounder (AIRS) NRT product is one important element in the Land, Atmosphere Near real-time Capability for EOS (LANCE). The LANCE processing of AIRS NRT products and the image generation are performed at the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC). The Open Geospatial Consortium (OGC) services are being utilized to access AIRS NRT images. The ongoing AIRS NRT imagery enhancement work includes adding a new set of the images in polar projections. Polar projections are commonly used for mapping Antarctica and Arctic regions. We have implemented more precise south polar (EPSG:3031) projection and north polar (EPSG:3413) projection making our OGC service instances more useful and interoperable. Thus, AIRS NRT data can be easily accessed and integrated with other applications. It greatly increases the impact of our data on researches in polar regions.In this presentation, we will introduce the optimized processing workflow for OGC services from data access with spatial-temporal index to data visualization with different SLD, and demonstrate how to use open source software to provide more precise map images in polar projections.
    Keywords: Computer Programming and Software
    Type: GSFC-E-DAA-TN76463 , AGU/19 IN21C-0861 , AGU 2019 Fall Meeting; Dec 10, 2019
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    NtGCM User's Manual: 1.1 (High Pressure High Temperature Laser based) Nanotube Growth Chamber Monitor (2019)
    In:  CASI
    Details
    Publication Date: 2019-12-21
    Description: This manual describes the installation and use of NtGCM software. NtGCM is software designed for monitoring the growth of nanotubes in a high temperature and high pressure chamber using a laser*. NtGCM software monitors a dozen dierent parameters that are important to understanding the growth of the nanomaterials including the laser input power, the temperature at eight separate locations inside and outside the growth chamber, as well as the pressure and ow rate of the gaseous media that control the environment in the chamber. The measurements are all made in real time. The program features a robust user account management layer and a rich data display manager that allows plotted data, displayed units and other parameters to be changed on the y for the operator's convenience.
    Keywords: Computer Programming and Software
    Type: NASA/TM-2019-220395 , 21035 , NF1676L-33535
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    Thermospheric Heating and Cooling Times During Geomagnetic Storms, Including Extreme Events (2019)
    In:  CASI
    Details
    Publication Date: 2020-01-18
    Description: We present the first quantitative calculations of thermospheric heating and cooling times for geomagnetic storms of different intensity, including extreme events. We utilize the neutral mass density database of the CHAllenging Minisatellite Payload and Gravity Recovery And Climate Experiment missions to produce thermospheric global system response to geomagnetic storms caused by coronal mass ejections via superposed epoch analysis during May 2001 to December 2015. Storm events are grouped in five different categories based on the minimum value of the SYMH index. We calculate the time from storm onset for the thermosphere to reach maximum intensification (heating time) and the time from onset for the thermosphere to recover (cooling time). We find that heating and cooling times decrease as storm intensity increases and the effect is more pronounced for the cooling times. For extreme storms, the thermospheric heating time is 9.5 hr, while the cooling time is 22 hr.
    Keywords: Geophysics
    Type: GSFC-E-DAA-TN76908 , Geophysical Research Letters (ISSN 0094-8276) (e-ISSN 1944-8007); 46; 22; 12739-12746
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    The NASA Space Geodesy Network (2019)
    In:  CASI
    Details
    Publication Date: 2020-01-18
    Description: NASA successfully demonstrated next generation SLR, VLBI, and GNSS using the GGAO prototypes.Tier 1 deployment of next generation stations is underway: KPGO (Kokee Park, Hawaii); VGOS station operational; VGOS station at McDonald Observatory, Texas nearly operational; build of long-lead items for first 3 SLR stations underway. Planning and discussions with international partners for Tier 2 deployment underway. Plan for Decadal Survey responsive deployment acceleration under review by NASA.
    Keywords: Geophysics
    Type: GSFC-E-DAA-TN75240 , Unified Analysis Workshop 2019; Oct 02, 2019 - Oct 04, 2019; Paris; France
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    Methane Beneath Greenlands Ice Sheet Is Being Released (2019)
    In:  CASI
    Details
    Publication Date: 2020-01-15
    Description: Methane is a potent greenhouse gas, but a complete accounting of global methane sources and sinks is still ongoing. Sediments beneath glaciers and ice sheets harbour carbon reserves that, under certain conditions, can be converted to methane. However, the formation and release of such methane is an unquantified component of the arctic methane budget. Lamarche-Gagnon et al. present direct measurements of dissolved methane in proglacial discharge from a land-terminating glacier of the Greenland Ice Sheet. This proglacial discharge was supersaturated with methane and had diffusive methane fluxes similar to other terrestrial rivers for the duration of the summer measurement period. Their results suggest that variability in proglacial discharge is associated with methane release from subglacial environments, implicating both the form and evolution of the subglacial hydrologic system as a newly discovered control in the arctic methane cycle.The study by Lamarche-Gagnon et al. is an important example of how the cryosphere can interact with the surrounding Earth system in unexpected and potentially significant ways. Characterizing the ability of subglacial sediments to convert and store methane and the ability of the subglacial hydrologic system to export this methane to the atmosphere, through both modeling and observational studies, are critical steps in improving our knowledge of the sources and sinks of arctic methane and better constraining their future changes.
    Keywords: Geophysics
    Type: GSFC-E-DAA-TN64543 , Nature (ISSN 0028-0836) (e-ISSN 1476-4687); 565; 7737; 31-32
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    AladynPi Adaptive Neural Network Molecular Dynamics Simulation Code with Physically Informed Potential: Computational Materials Mini-Application (2019)
    In:  CASI
    Details
    Publication Date: 2020-01-08
    Description: This report provides an overview and description of commands used in the Computational Materials mini-application, AladynPi. AladynPi is an extension of a previously released mini-application, Aladyn (https://github.com/nasa/aladyn; Yamakov, V.I., and Glaessgen, E.H., NASA/TM-2018-220104). Aladyn and AladynPi are basic molecular dynamics codes written in FORTRAN 2003, which are designed to demonstrate the use of adaptive neural networks (ANNs) in atomistic simulations. The role of ANNs is to efficiently reproduce the very complex energy landscape resulting from the atomic interactions in materials with the accuracy of the more expensive quantum mechanics-based calculations. The ANN is trained on a large set of atomic structures calculated using the density functional theory method. An input for the ANN is a set of structure coefficients, characterizing the local atomic environment of each atom, for which the atomic energy is obtained in the ANN inference process. In Aladyn, the ANN gives directly the energy of interatomic interactions. In AladynPi, the ANN gives optimized parameters for a predefined empirical function, known as bond-order-potential (BOP). The parameterized BOP function is then used to calculate the energy. AladynPi code is being released to serve as a training testbed for students and professors in academia to explore possible optimization algorithms for parallel computing on multicore central processing unit (CPU) computers or computers utilizing manycore architectures based on graphic processing units (GPUs). The effort is supported by the High Performance Computing incubator (HPCi) project at NASA Langley Research Center.
    Keywords: Computer Programming and Software
    Type: NF1676L-35139 , NASA/TM-2019-220431 , L-21087
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    Round Trip Review Process Improvement (2019)
    In:  CASI
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    Publication Date: 2020-01-04
    Description: No abstract available
    Keywords: Computer Programming and Software
    Type: M19-7744 , RAM/ Defense Acquisition University Society of Reliability Engineers; Nov 13, 2019 - Nov 14, 2019; Huntsville, AL; United States
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    STF-1 Ground Operations - Automating the Planning, Scheduling, Assessment and Data Processing/Reduction for a Small Satellite (2019)
    In:  CASI
    Details
    Publication Date: 2020-01-04
    Description: On December 16, 2018, a 3-U CubeSat named STF-1 launched as West Virginia's first spacecraft. This event marked the culmination of a run-up to launch involving the production of the spacecraft, creation/configuration of command and control infrastructure, and the evolution of its co-creation, the NASA Operational Simulator for Small Satellites (NOS3). This event also marked the beginning of a new phase: operations. While plans, procedures, and infrastructure were already in place or started for operations, many lessons were learned during the operations phase, especially during early operations (first month/commissioning phase). Additional plans, procedures, and infrastructure, especially related to communication planning and automated data processing, were created and developed to fill needs for the operation of the STF-1 mission.This paper and presentation will overview the STF-1 operations team's solutions to addressing the many needs of operating a low-earth orbiting CubeSat mission with a single ground antenna that is shared and scheduled with several other missions. The STF-1 operations team deployed a combination of virtualization technologies, ground station technology solutions, collaboration software, custom planning software solutions, and existing ground antenna scheduling solutions to create an effective and efficient CubeSat operations environment. The end-solution satisfied the operations stakeholders, which include NASA, its industry partner TMC2 Technologies, and four independent professor-student teams at West Virginia University.
    Keywords: Computer Programming and Software
    Type: GSFC-E-DAA-TN75626 , Annual Workshop on Spacecraft Flight Software (FSW 2019); Dec 09, 2019 - Dec 12, 2019; Huntsville, AL; United States
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    Magnetic Reconnection in a QuasiParallel Shock: TwoDimensional Local ParticleinCell Simulation (2019)
    In:  Other Sources
    Details
    Publication Date: 2020-01-03
    Description: Magnetic reconnection in a quasiparallel bow shock is investigated with twodimensional local particleincell simulations. In the shock transition and downstream regions, large amplitude magnetic fluctuations exist, and abundant current sheets form. In some current sheets, reconnection occurs, and ionscale and electronscale magnetic islands are generated. In electronscale island regions, only electron outflow jets are observed, producing a quadrupolar outofplane magnetic field pattern, while in ionscale islands, both ions and electrons are involved and energized in reconnection. Normalized reconnection rates are obtained to be between around 0.1 to 0.2, and particle acceleration signatures are seen in distribution functions.
    Keywords: Geophysics
    Type: GSFC-E-DAA-TN76654 , Geophysical Research Letters (ISSN 0094-8276) (e-ISSN 1944-8007); 46; 16; 9352-9361
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    Software Tool for Tracking & Mapping the NASA Orion AA-2 Test Flight Ejectable Data Recorders in Real Time (2019)
    In:  CASI
    Details
    Publication Date: 2019-12-20
    Description: On 2 July 2019, the NASA Ascent Abort 2 flight took place off the Florida coast to test the emergency systems to separate the Orion Crew Module (CM) from the future Space Launch System rocket in the event of a malfunction. During this high-altitude test, instrumentation data was recorded on twelve customized buoyant Ejectable Data Recorders (EDRs) and subsequently jettisoned from the CM in mid-air. Upon release, the EDRs activated their GPS-Iridium beacon systems and began transmitting Short Burst Data (SBD) messages via the Iridium satellite network to relay their individual location and system health information. To locate, track and retrieve each EDR from the ocean surface in real-time, multiple open-source programming tools (Python and Linux shells) were developed for parsing the incoming Iridium binary SBD messages. For this, a Linux laptop was used to receive the Iridium-generated emails containing the SBD messages and autonomously execute the parsing tools. The received SBD data contained location, timestamp and health status information that was translated, saved, and subsequently used for simultaneously generating a continuously updated color-coded tabular display summary and unique KML files used with Google Earth to track their locations. Once their locations were known, dedicated recovery vessels retrieved all EDRs from the ocean. An additional tool was also developed in order to generate 5- and 10-minute geolocation predictions for each EDR by deriving the displacement distance, elapsed time, displacement heading and velocity based on the latest known information available. The recovery vessels were also tracked with the use of a separate commercial GPS beacon system. After jettison, 67% of the EDRs transmitted valid data by the time they were retrieved from the ocean. However, the real-time information presented by the plotting tool allowed for the ready depiction of EDR dispersal patterns and reference drift trajectories, which contributed to the recovery of all twelve EDRs and the AA-2 flight data. Lastly, the available data showed that the distance between the softwares reported drift/predicted locations and the recovery locations did not exceed 38 meters, therefore demonstrating the advantages of this software tool for supporting real-time tracking and recovery efforts of beacon devices.
    Keywords: Computer Programming and Software
    Type: AFRC-E-DAA-TN75600 , American Geophysical Union (AGU) Fall Meeting 2019; Dec 09, 2019 - Dec 13, 2019; San Francisco, CA; United States
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    Examination of Separator Reconnection Rates in a Series of Adjacent Emerging/Existing Active Region Pairs (2019)
    In:  CASI
    Details
    Publication Date: 2019-12-17
    Description: No abstract available
    Keywords: Geophysics
    Type: MSFC-E-DAA-TN76220 , American Geophysical Union Fall Meeting; Dec 09, 2019 - Dec 13, 2019; San Francisco, CA; United States
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    Image Labeler: Label Earth Science Images for Machine Learning (2019)
    In:  CASI
    Details
    Publication Date: 2019-12-14
    Description: The application of machine learning for image-based classification of earth science phenomena, such as hurricanes, is relatively new. While extremely useful, the techniques used for image-based phenomena classification require storing and managing an abundant supply of labeled images in order to produce meaningful results. Existing methods for dataset management and labeling include maintaining categorized folders on a local machine, a process that can be cumbersome and not scalable. Image Labeler is a fast and scalable web-based tool that facilitates the rapid development of image-based earth science phenomena datasets, in order to aid deep learning application and automated image classification/detection. Image Labeler is built with modern web technologies to maximize the scalability and availability of the platform. It has a user-friendly interface that allows tagging multiple images relatively quickly. Essentially, Image Labeler improves upon existing techniques by providing researchers with a shareable source of tagged earth science images for all their machine learning needs. Here, we demonstrate Image Labelers current image extraction and labeling capabilities including supported data sources, spatiotemporal subsetting capabilities, individual project management and team collaboration for large scale projects.
    Keywords: Computer Programming and Software
    Type: MSFC-E-DAA-TN76058 , American Geophysical Union (AGU) Fall Meeting 2019 ; Dec 09, 2019 - Dec 13, 2019; San Francisco, CA; United States
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    Providing Data Access and Analysis Capabilities to SERVIRs Data-Sparse Regions (2019)
    In:  CASI
    Details
    Publication Date: 2019-12-14
    Description: In developing regions of the world, the communications infrastructure pose enormous challenges for using Earth observation data. Limited internet bandwidth along with the high costs make it almost impossible to process and extract zonal statistics over large periods of time for even small geographic areas. In such cases, downloading daily rainfall data or dekadal series of NDVI data would take days and consume all the bandwidth allocated to an organization (for reference, internet connections in Niger would cost thousands of dollars per month at a maximum - and unreliable - bandwidth of just 10 Mbps). Running crop models or hydrological models typically require several years of historic data over the area of interest (AOI). In some cases, these AOIs are relatively small compared to the footprint of individual earth observation granules. Hence, systems that let the stakeholders subset the data to download to a user specified area, or even submit processing requests that let them download small result files for the AOI become critical. The SERVIR program has developed a tool to provide this type of access to help decision makers in developing regions use long time series of adjusted rainfall data (CHIRPS), NDVI values, seasonal weather forecasts, evaporative stress indices and others in a very efficient manner. This system, named ClimateSERV (https://climateserv.servirglobal.net) ingests the datasets in an automated fashion and allows interactive access (through a web application), or automated access through a simple API that developers can quickly incorporate in independent applications. This way, the extraction of daily averages of rainfall over a 50 square Km area through 30 years of archived data takes only a few seconds to process, and the results can be presented on an online chart or downloaded in a comma separated file that's only a few Kb.
    Keywords: Computer Programming and Software
    Type: MSFC-E-DAA-TN75604 , American Geophysical Union (AGU) Fall Meeting 2019; Dec 09, 2019 - Dec 13, 2019; San Francisco, CA; United States
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    Electron Diffusion Regions in Magnetotail Reconnection Under Varying Guide Fields (2019)
    In:  CASI
    Details
    Publication Date: 2019-11-08
    Description: Kinetic structures of electron diffusion regions (EDRs) under finite guide fields in magnetotail reconnection are reported. The EDRs with guide fields 0.140.5 (in unit of the reconnecting component) are detected by the Magnetospheric Multiscale spacecraft. The key new features include the following: (1) cold inflowing electrons accelerated along the guide field and demagnetized at the magnetic field minimum while remaining a coherent population with a low perpendicular temperature, (2) wave fluctuations generating strong perpendicular electron flows followed by alternating parallel flows inside the reconnecting current sheet under an intermediate guide field, and (3) gyrophase bunched electrons with high parallel speeds leaving the Xline region. The normalized reconnection rates for the three EDRs range from 0.05 to 0.3. The measurements reveal that finite guide fields introduce new mechanisms to break the electron frozenin condition.
    Keywords: Geophysics
    Type: GSFC-E-DAA-TN73675 , Geophysical Research Letters (ISSN 0094-8276) (e-ISSN 1944-8007); 46; 12; 6230–6238
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    Reusing Data and Metadata to Create New Metadata Through Machine-Learning & Other Programmatic Methods (2019)
    In:  CASI
    Details
    Publication Date: 2019-12-14
    Description: Recent improvements in natural language processing (NLP) enable metadata to be created programmatically from reused original metadata or even the dataset itself. Transfer-learning applied to NLP has greatly improved performance and reduced training data requirements. In this talk, well compare machine-generated metadata to human-generated metadata and discuss characteristics of metadata and data archives that affect suitability for machine-learning reuse of metadata. Where as human-generated metadata is often populated once, populated from the perspective of data supplier, populated by many individuals with different words for the same thing, and limited in length, machine-generated metadata can be updated any number of times, generated from the perspective of any user, constrained to a standardized set of terms that can be evolved over time, and be any length required. Machine-learning generated metadata offers benefits but also additional needs in terms of version control, process transparency, human-computer interaction, and IT requirements. As a successful example, well discuss how a dataset of abstracts and associated human-tagged keywords from a standardized list of several thousand keywords were used to create a machine-learning model that predicted keyword metadata for open-source code projects on code.nasa.gov. Well also discuss a less successful example from data.nasa.gov to show how data archive architecture and characteristics of initial metadata can be strong controls on how easy it is to leverage programmatic methods to reuse metadata to create additional metadata.
    Keywords: Computer Programming and Software
    Type: IN23D-0898 , HQ-E-DAA-TN75294 , American Geophysical Union (AGU) Fall Meeting 2019 ; Dec 09, 2019 - Dec 13, 2019; San Francisco, CA; United States
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    Analysis Ready Data in Analytics Optimized Data Stores for Analysis of Big Earth Data in the Cloud (2019)
    In:  CASI
    Details
    Publication Date: 2019-12-14
    Description: Cloud computing offers the possibility of making the analysis of Big Data approachable for a wider community due to affordable access to computing power, an ecosystem of usable tools for parallel processing, and migration of many large datasets to archives in the cloud, allowing data-proximal computing. Generally, data analysis acceleration in the cloud comes from running multiple nodes in a split-combine-apply strategy. Data systems such as the Earth Observing System Data and Information System are in a position to "pre-split" the data by storing them in a data store that is optimized for data parallel computing, i.e., an Analytics-Optimized Data Store (AODS). A variety of approaches to AODS are possible, from highly scalable databases to scalable filesystems to data formats optimized for cloud access (e.g., zarr and cloud-optimized datasets), with the optimal choice dependent on both the types of analysis and the geospatial structure of the data. A key question is how much preprocessing of the data to do, both before splitting and as the first part of the apply step. Again, the geospatial structure of the data and the analysis type influence the decision, with the added complexity of the user type. Trans-disciplinary users who are not well-versed in the nuances of quality-filtering and georeferencing of remote sensing orbit/swath/scene data tend to ask for more highly processed data, relying on the data provider to make sensible decisions on preprocessing parameters. (This accounts for the popularity of "Level 3" gridded data, despite the lower spatial resolution it provides.) In this case, data can be preprocessed before the split, resulting in higher performance in the rest of the "apply" step, which can be transformative for use cases such as interactive data exploration at scale. Discipline researchers who are experienced with remote sensing data often prefer more flexibility in customizing the preprocessing data into Analysis Ready Data, resulting in more need for on-the-fly preprocessing.
    Keywords: Computer Programming and Software
    Type: GSFC-E-DAA-TN75582 , American Geophysical Union Fall Meeting; Dec 09, 2019 - Dec 13, 2019; San Francisco, CA; United States
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    Comprehensive Assessment of Models and Events Using Library Tools (CAMEL) Framework: Time Series Comparisons (2019)
    In:  CASI
    Details
    Publication Date: 2019-11-09
    Description: The Comprehensive Assessment of Models and Events using Library Tools (CAMEL) framework leverages existing Community Coordinated Modeling Center services: Run on Request post processing tools that generate model time series outputs and the new Community Coordinated Modeling Center Metadata Registry that describes simulation runs using Space Physics Archive Search and Extract metadata. The new CAMEL visualization tool compares the modeled time series with observational data and computes a suite of skill scores such as Prediction Efficiency, Root Mean Square Error, and Symmetric Signed Percentage Bias. Model data pairs used for skill calculations are obtained considering a user selected maximum difference between the time of observation and the nearest model output. The system renders available data for all locations and time periods selected using interactive visualizations that allow the user to zoom, pan, and pick data values along traces. Skill scores are reported for each selected event or aggregated over all events for all participating model runs. Separately, scores are reported for all locations (satellites or stations) and for each location individually. We are building on past experiences with model data comparisons of magnetosphere and ionosphere model outputs from GEM2008, GEMCEDAR Electrodynamics Thermosphere Ionosphere, and the SWPC Operational Space Weather Model challenges. The CAMEL visualization tool is demonstrated using three validation studies: (a) Wang Sheeley Arge heliosphere simulations compared against OMNI solar wind data, (b) ground magnetic perturbations from several magnetosphere and ionosphere electrodynamics models as observed by magnetometers, and (c) electron fluxes from several ring current simulations compared to Radiation Belt Storm Probes Helium Oxygen Proton Electron instrument measurements, integrated over different energy ranges.
    Keywords: Computer Programming and Software
    Type: GSFC-E-DAA-TN73754 , Space Weather (ISSN 1539-4956) (e-ISSN 1542-7390); 17; 6; 845-860
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    The Cumulus Ecosystem: Open Source and Beyond to Foster Collaboration (2019)
    In:  Other Sources
    Details
    Publication Date: 2020-01-24
    Description: NASAs Earth Observing System Data and Information System (EOSDIS) open source Cumulus software is designed as a common set of code and services that can be used to create a pipeline to deliver and manage earth science data in the cloud. Cumulus strives to create an ecosystem on the foundation of open source that unites those with shared problems and goals by encouraging users to contribute solutions back to the platform. Large parts of ingesting and managing data are common and much of what is created can be used by others. Our goal is to maximize collaboration and code reuse while allowing users to design a custom solution that meets their needs without having to take on extraneous functionality. In this talk we will describe how the Cumulus ecosystem works beyond just open source software. We will review the technology, the successes and challenges, and the evolution and future of Cumulus as an ecosystem.
    Keywords: Computer Programming and Software
    Type: GSFC-E-DAA-TN75184 , American Geophysical Union (AGU) Fall Meeting 2019; Dec 09, 2019 - Dec 13, 2019; San Francisco, CA; United States
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    Overview of the PLEXIL Plan Execution Technology and its Applications in Autonomous Piloting Projects at NASA (2019)
    In:  CASI
    Details
    Publication Date: 2019-12-27
    Description: Automated planning is a key Artificial Intelligence technology enabling Unmanned Aerial Systems (UAS) and the eminent reality of Urban Air Mobility (UAM). It produces plans, which formalize procedures often performed by humans. Plans differ from other kinds of computer programs in their ability to react and interact with a dynamically changing environment. Aviation plans must encode the procedural knowledge, reasoning capability, and capacity for multi-tasking held by competent human pilots. Correct execution of these plans (performed by software called an executive) in the dynamic airspace environment is vital to the success of each automated flight, and the safety of the vehicle and all things in its path. In the early 2000s NASA developed a plan representation language and executive called PLEXIL (Plan Execution Interchange Language) that has successfully been applied in several NASA aviation and UAS projects. Autonomy Operating System (AOS), Cockpit Hierarchical Automated Planning and Execution (CHAP-E), and ICAROUS are all projects that have used PLEXIL to help encode and automatically execute flight procedures, some normally performed by human pilots. AOS also automates a subset of pilot/Air Traffic Control communication towards enabling UAS entry into the National Airspace. PLEXIL has been open-source software since 2008 and has seen usage in a wide range of prototypical autonomy applications in academia, government, and industry. In this presentation, we describe PLEXIL and highlight its significant accomplishments in the aviation domain.
    Keywords: Computer Programming and Software
    Type: ARC-E-DAA-TN74339 , KBR Technology Day 2019; Oct 28, 2019 - Oct 29, 2019; houston, TX; United States
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    Changing Climate, Changing Data: Exposing Climate Data to New Users Through GeoPlatform.govs Resilience Community (2019)
    In:  CASI
    Details
    Publication Date: 2019-12-27
    Description: Over 700 climate related datasets were curated by subject matter experts into 9 thematic areas as a part of the Climate Data Initiative (CDI). NASA was tasked with maintaining the collections data inventory and supporting web pages at data.gov/climate. Today, the Data Curation for Discovery (DCD) team at MSFC continues to support the CDI collection. In order to expose the collection to a new and growing user community, the DCD team has partnered with GeoPlatform.gov to develop the Resilience community. The Resilience community serves as an interactive, topically-focused web portal that further promotes and shares CDI web content, datasets, services, maps, and other tools relevant to global resilience and change. This poster focuses on the teams efforts to leverage GeoPlatforms semantic applications to link CDI objects within the platform to improve discoverability. This poster also provides insights as to how this effort may serve as an example for building and expanding future Geoplatform.gov communities..
    Keywords: Computer Programming and Software
    Type: MSFC-E-DAA-TN75219 , American Geophysical Union (AGU) Fall Meeting 2019 ; Dec 09, 2019 - Dec 13, 2019; San Francisco, CA; United States
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    Machine Learning Applications for Earth Science at NASA IMPACT (2019)
    In:  CASI
    Details
    Publication Date: 2019-12-27
    Description: No abstract available
    Keywords: Computer Programming and Software
    Type: MSFC-E-DAA-TN76226 , (American Geophysical Union) AGU Fall Meeting 2019; Dec 09, 2019 - Dec 13, 2019; San Francisco, CA; United States
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    Python & Qt, Powerful Tools for Technical Computing (2019)
    In:  CASI
    Details
    Publication Date: 2019-11-13
    Description: The objective of this presentation is to give a brief overview of Python computer language and Qt for Python which provides an interface to Python for building graphical applications. The Qt language provides a method for rapid programming of Graphical User Interfaces (GUIs) that are highly scalable, robust and platform independent. Both Python and Qt provide a powerful set of tools for Dynamic Analysis which are based on Open-Source software. Many problems and calculations in Structural Dynamics such as Power Spectral Density, Shock Response Spectrum and Vibration Response Spectrum can be easily calculated using these tools. The advantage of using Open-Source software is the ability to create custom graphical user interfaces similar to Matlab without the expense of software licensing and the ability to customize the software to an organization's specific needs. Also, another advantage is the ability to know which algorithms are being used by the GUI, know the numerical limitations and scale to large size data sets. I will end the presentation by demonstrating a Structural Dynamics GUI I created that was designed primarily to interactively analyze Post Flight high speed data provided by the ground station telemetry networks.
    Keywords: Computer Programming and Software
    Type: KSC-E-DAA-TN73215 , Shock and Vibration Symposium; Nov 03, 2019 - Nov 07, 2019; Atlanta, GA; United States
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    Federated Cloud Challenges in NASA's Earth Science Data Systems (Why So Difficult?) (2019)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: NASA is presented with a number of opportunities and challenges in federating its Earth Science Data Systems in the burgeoning world of cloud computing. Cloud hosting of Earth Science data provides a new way of bringing data together, at least from a virtual location sense, and is one of the main motives for NASA to host data there. However, NASA is also faced with a Big Data Variety challenge, brought on by the variety of the EO datasets in its archives. This diversity requires many diverse science archives to service the different science communities. As a result, nearly every major function in the Earth Observing System Data and Information System (EOSDIS) must also be federated across its data centers. This pattern is repeated with many of the outside agencies and organizations that EOSDIS federates with, such as the Committee for Earth Observing Satellites, leading to pioneering work on "deep federation" in a joint project with the European Space Agency to develop a Multi-Mission Algorithm and Analysis Platform.
    Keywords: Computer Programming and Software
    Type: GSFC-E-DAA-TN70414 , Open Research Cloud Alliance Workshop; May 22, 2019; Washington, DC; United States
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    Testing Scientific Software: Challenges and Remedies (2019)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Over the past two decades, the emergence of highly effective software testing frameworks has greatly simplified the development and use of unit tests and has led to new software development paradigms such as test driven development (TDD). However, scientific computing introduces a number of unique testing challenges, including numerical algorithms, distributed parallelism, and exascale environments. This presentation will begin with a brief introduction to unit testing, testing frameworks, and some simple examples using pFUnit, a unit testing framework for Fortran + MPI. I will then take a closer look at several of the obstacles one faces when testing technical software and suggest methodologies that can mitigate these difficulties.
    Keywords: Computer Programming and Software
    Type: GSFC-E-DAA-TN68657 , National Center for Supercomputing Applications Seminar; May 06, 2019; Urbana, IL; United States
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    A Physical Model of Moulin Formation and Evolution (2019)
    In:  CASI
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    Publication Date: 2019-07-13
    Description: Nearly all proglacial water discharge from the present-day Greenland Ice Sheet is routed englacially via moulins. Identification of these moulins in high-resolution imagery is a frequent topic of study, but the processes controlling how and where moulins form, including on past ice sheets for which remote-sensing data are not available, remain poorly understood. Because moulins may reasonably compose approximately 10-15% of the englacial-subglacial hydrologic system, the evolution and shape of moulins can alter the timing of meltwater inputs to the bed. This evolution can impact both the form of the subglacial hydrologic system and the structure of associated geomorphological structures. Here, we develop a physical model of moulin formation and evolution to constrain the role of englacial processes in controlling the form and structure of the subglacial hydrologic system. Ice deformation within and around a moulin is both viscous and elastic, with the rate of turbulent and heat dissipation from water circulation in the moulin controlling both moulin wall melting and warming of the surrounding ice. We find moulin geometry is responsive to changes in these parameters over hours to days, indicating that diurnal and multi-day variations in surface melt can substantially alter the geometry of a moulin and the pressure-discharge relationship at the bed of the ice sheet. These results should be considered carefully when determining surface water inputs for subglacial hydrologic models. In the future, a parameter space study of these results will be combined with an analytic model to create a predictive, stochastic model of moulin and crevasse locations. This future model will be applicable to constraining the potential for surface-to-bed connections in regions where the exact ice-sheet surface morphology is not known, including ice sheets under future warming atmospheric conditions, and paleo ice sheets, where moulins created modern landforms.
    Keywords: Geophysics
    Type: GSFC-E-DAA-TN68842 , International Glaciological Society Symposium on Glacial Erosion and Sedimentation; May 12, 2019 - May 17, 2019; Madison, WI; United States
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    Writing a New Automated Testing Method for Custom Display Components (2019)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: During the launch process of the Space Launch System (SLS), engineers in the Firing Room of the Launch Control Center (LCC) will be analyzing displays that show data and statistics about the vehicle and launch. These displays are subject to a battery of tests, but the custom components they use are not currently supported by any testing framework. My project is to modify a testing framework so that the custom components on these displays can be tested similarly to how a user would interact with them.
    Keywords: Computer Programming and Software
    Type: KSC-E-DAA-TN67206 , Kennedy Space Center (KSC) Pathways Showcase Spring 2019; Apr 18, 2019; Cocoa Beach, FL; United States
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    Software Development and Testing Support for the Avionics Systems Telemetry Tool Suite (2019)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The Customer Avionics Interface Development and Analysis (CAIDA) team provides modeling and simulation software for the verification of the Launch Control System (LCS). In late 2015, CAIDA began development of the Data Exchange Message (DEM) Generator (DEMGen) and development of the DEM Modifier (DEMMod) in early 2017. DEMGen is able to mimic the telemetry streams normally sent by different simulators allowing increased user control and more telemetry instances. DEMMod takes in a telemetry stream and allows the modification of entire packets or simple measurement values. Together, these tools provide the capabilities to simulate and test complex launch scenarios to ensure LCS is fully prepared for any anomalous behavior during an actual launch. In early 2018, CAIDA began a new project called the CAIDA Advanced Telemetry Tool (CATT), which combined the code and documentation of DEMGen and DEMMod. CATT now allows the integration of new tools into a singular program providing compact and easy access. In the fall of 2018, the author worked with another intern, Antonio Negron, to develop several new CATT features along with proper documentation and unit testing. In the following spring, the author continued that work by integrating the features into CATT, solidifying the documentation, and expanding the testing to cover more cases. The outcome of both semesters includes an inspection engine for automated packet analysis, a packet-masking feature, and a multi-measurement sequencing feature.
    Keywords: Computer Programming and Software
    Type: KSC-E-DAA-TN67156 , Kennedy Space Center (KSC) Pathways Showcase Spring 2019; Apr 18, 2019; Cocoa Beach, FL; United States
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    Generalized Fluid System Simulation Program (GFSSP) Training Course 12: User Subroutine (2019)
    In:  Other Sources
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    Publication Date: 2019-09-06
    Description: An overview of the user subroutine including program structure, solution algorithm, solver-user subroutine interaction, data structure, indexing subroutines, utility subroutines, utility subroutines and functions, and compiling and linking. Code examples are provided and includes a demonstration (Tank Blowdown with Heat Transfer).
    Keywords: Computer Programming and Software
    Type: M19-7529
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    INCOSE Model-Based Capabilities Matrix (Draft 2.0b) Role-Based View (2019)
    In:  Other Sources
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    Publication Date: 2019-09-06
    Description: No abstract available
    Keywords: Computer Programming and Software
    Type: M19-7475-2 , International Council on Systems Engineering (INCOSE); Jul 20, 2019 - Jul 25, 2019; Orlando, FL; United States
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    Formation of the Potential Jump over the Geomagnetically Quiet Sunlit Polar Cap Region (2019)
    In:  CASI
    Details
    Publication Date: 2019-09-14
    Description: We consider the formation of a potential drop over the Earth's polar cap during geomagnetically quiet daytime. The observed potential drop is primarily defined by the hydrogen, photoelectron, and polar rain fluxes ratios and depends strongly on the energy distribution of the photoelectron flux. Polar rain is an essential component of the model required for plasma quasineutrality. The potential distribution along the magnetic field line has two regions, with a small, gradual, potential drop of 3 to 4 volts and a potential jump. The value of the potential jump depends on the hydrogen ion to photoelectron flux ratio and is also controlled by polar rain electrons. With quasineutrality required at its upper boundary, the jump only occurs in the presence of polar rain and its location depends on the polar rain flux. Model predictions compare well with FAST (Fast Auroral SnapshoT) observations presented by Kitamura et al.(2012, https://doi.org/10.1029/2011JA017459).
    Keywords: Geophysics
    Type: GSFC-E-DAA-TN72183 , Journal of Geophysical Research: Space Physics (ISSN 2169-9380) (e-ISSN 2169-9402); 124; 6; 4384-4401
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    MARGInS Model-Based Analysis of Realizable Goals in Systems (2019)
    In:  CASI
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    Publication Date: 2019-11-23
    Description: The high complexity of modern aircraft and spacecraft requires elaborate Verification and Validation (V&V) approaches to make sure that such complex systems work properly and reliably. MARGInS is a framework for the analysis, understanding, and prediction of the behavior of a complex, hybrid system. MARGInS contains a set of machine learning and statistical algorithms for multivariate clustering, treatment learning, critical factor determination, time-series analysis, event prediction, and safety-boundary detection and characterization. The framework supports system testing and can be configured to find novel features in test suites, determine classes of behavior, propose new experiments that can efficiently explore and characterize the boundaries between classes of system behavior, and to create visualizations and reports.
    Keywords: Computer Programming and Software
    Type: ARC-E-DAA-TN74357 , NASA ARC - Boeing Collaborative Meeting; Oct 16, 2019; Moffett Field, CA; United States
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    Software and System Health Management with R2U2 (2019)
    In:  CASI
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    Publication Date: 2019-11-22
    Description: R2U2 (Realizable, Responsive, Unobtrusive Unit) is a hardware-supported tool and framework for the real-time system and software health management of cyber-physical systems. R2U2 continuously monitors properties about safety, performance, and security of the vehicle and can perform diagnostic reasoning. Efficient observers for past-time and future-time Metric Temporal Logic, reasoners for Bayesian Networks, and model-based prognostics algorithms are major components of R2U2. Their combination makes it possible to design powerful models for system runtime monitoring, diagnostics, software health management, prognostics, and security monitoring. The R2U2 monitoring engine is designed for minimal runtime overhead and is available as Simulink block or as a software component for integration into the flight software stack, and enables R2U2 to monitor complex cyber-physical systems without any instrumentation of the flight software. In this presentation, we give an overview of R2U2 architecture and reasoning algorithms, present its features, and give a life demo of the tool.
    Keywords: Computer Programming and Software
    Type: ARC-E-DAA-TN75650
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    Average Path Profile of Atmospheric Temperature and Humidity Structure Parameters from a Microwave Profiling Radiometer (2019)
    In:  CASI
    Details
    Publication Date: 2019-11-21
    Description: The values of the key atmospheric turbulence parameters (structure constants) for temperature and water vapor, that is, C(exp 2)(sub T), and C(exp 2)(sub Q), are highly dependent upon the vertical height within the atmosphere thus making it necessary to specify profiles of these values along the atmospheric propagation path. The remote sensing method suggested and described in this work makes use of a rapidly integrating microwave profiling radiometer to capture profiles of temperature and humidity through the atmosphere. The integration times of currently available profiling radiometers are such that they are approaching the temporal intervals over which one can possibly make meaningful assessments of these key atmospheric parameters. These integration times, coupled with the boundary effects of the Earths surface are, however, unconventional for turbulence characterization; the classical Kolmogorov turbulence theory and related 2/3 law for structure functions prevalent in the inertial subrange are no longer appropriate. An alternative to this classical approach is derived from first principles to account for the nuances of turbulent mechanics met with using radiometer sensing, that is, the large-scale turbulence driven by the various possible boundary conditions within the buoyancy subrange. Analytical expressions connecting the measured structure functions to the corresponding structure parameters are obtained. The theory is then applied to an experimental scenario involving radiometric profile measurements of temperature and shows very good results.
    Keywords: Geophysics
    Type: NASA/TP—2019-220300 , GRC-E-DAA-TN68884
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    Core Flight System Software Bus Networking Application Design as Built (2019)
    In:  CASI
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    Publication Date: 2019-11-21
    Description: Presentation is an update to the Core Flight Software (CFS) Change Control Board (CCB) and other interested parties on the state of the Software Bus Networking (SBN) application.
    Keywords: Computer Programming and Software
    Type: ARC-E-DAA-TN37567 , Workshop on Spacecraft Flight Software (FSW-16); Dec 13, 2016 - Dec 15, 2016; Pasadena, CA; United States
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    Using Science Operations Tools and Methods from NASA for Remote Presence Ocean Exploration on Earth: E/V Nautilus Cruise NA108 (2019)
    In:  CASI
    Details
    Publication Date: 2019-11-15
    Description: NASA Ames' Exploration Ground Data Systems (xGDS) supports rapid scientific decision making by synchronizing information in time and space, including video and still images, scientific instrument data, and science and operations notes in geographic and temporal context. We have deployed xGDS at multiple NASA field analog missions over the past decade.In the last two years, we have participated in SUBSEA, a multi-institution collaborative project. SUBSEA used the research ship E/V Nautilus along with its two remotely operated vehicles (ROVs), Hercules and Argus, to explore deep ocean volcanic vents as an analog for ocean worlds (e.g. Enceladus). This work allowed us to compare the existing oceanographic operations methods and technologies used for ocean exploration with corresponding tools and approaches developed and used at NASA. In the first year of SUBSEA we observed existing remote science operations from the Inner Space Center (ISC). In the second year, we deployed xGDS at ISC to complement existing capabilities with xGDS tools designed to support remote Nautilus science operations from the ISC. During operations, video, ROV position and instrument telemetry were streamed from the ship to the ISC. As the science team watched dive operations, they could annotate the data with observations that were relevant to their work domain. Later, the team members could review the data at their own pace to collaboratively develop a dive plan for the next day, which had to be delivered on a fixed daily schedule.The opportunity to compare operations under different conditions enabled us to make several key observations about conducting remote science and planning operations efficiently: (i) Reviewing data collaboratively and interactively with temporal and spatial context was critical for the remote science team's ability to plan dive operations on the Nautilus. (ii) Science team members were actively engaged with the remote dive operations because they could interact with the collected data and visualize it as they desired. (iii) Being able to replay past events at accelerated speeds, and jump to points in time and spaced based on search results, provided efficient access to critical points of interest in a massive volume of data, so the remote science team could deliver plans on time. SUBSEA (Systematic Underwater Biogeochemical Science and Exploration Analog) is a multi-institution collaboration supported by NASA, NOAA's Office of Exploration Research (OER), the Ocean Exploration Trust (OET) and the University of Rhode Island's Graduate School of Oceanography (GSO). ISC is GSO's telepresence operations facility.
    Keywords: Computer Programming and Software
    Type: ARC-E-DAA-TN74761 , OneNOAA Science Seminar; Oct 24, 2019; Silver Spring, MD; United States
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    NineteenthCentury Tides in the Gulf of Maine and Implications for Secular Trends (2019)
    In:  Other Sources
    Details
    Publication Date: 2020-01-18
    Description: Since the early twentieth century, the amplitudes of tidal constituents in the Gulf of Maine and Bay of Fundy display clear secular trends that are among the largest anywhere observed for a regional body of water. The M2 amplitude at Eastport, Maine, increased at a rate of 14.1 1.2 cm per century until it temporarily dropped during 19801990, apparently in response to changes in the wider North Atlantic. Annual tidal analyses indicate M2 reached an alltime high amplitude last year (2018). Here we report new estimates of tides derived from nineteenth century waterlevel measurements found in the U.S. National Archives. Results from Eastport, Portland, and Pulpit Harbor (tied to Bar Harbor) do not follow the twentieth century trends and indicate that the Gulf of Maine tide changes commenced sometime in the late nineteenth or early twentieth centuries, coincident with a transition to modern rates of sealevel rise as observed at Boston and Portland. General agreement is that sea level rise alone is insufficient to cause the twentiethcentury tide changes. A role for ocean stratification is suggested by the longterm warming of Gulf of Maine waters; archival water temperatures at Boston, Portland, and Eastport show increases of 2 C since the 1880s. In addition, a changing seasonal dependence in M2 amplitudes is reflected in a changing seasonal dependence in water temperatures. The observations suggest that models seeking to reproduce Gulf of Maine tides must consider both sea level rise and longterm changes in stratification.
    Keywords: Geophysics
    Type: GSFC-E-DAA-TN76435 , Journal of Geophysical Research: Oceans (ISSN 2169-9291) (e-ISSN 2169-9291); 124; 10; 7046-7067
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    High-Performance Computing Optimization for Aladyn Adaptive Neural Network Molecular Dynamics Mini-Application (2019)
    In:  CASI
    Details
    Publication Date: 2019-10-22
    Description: This report provides a description and performance evaluation of the optimization techniques for high performance computing (HPC) implementation of the open source Computational Materials mini-application Aladyn (https://github.com/nasa/aladyn). Aladyn is a basic molecular dynamics code written in FORTRAN 2003, which is designed to demonstrate the use of adaptive neural networks (ANNs) in atomistic simulations. The role of ANNs is to efficiently reproduce the very complex energy landscape resulting from the atomic interactions in materials with the accuracy of the more expensive quantum mechanics-based calculations. The ANN is trained on a large set of atomic structures calculated using the density functional theory (DFT) method. While achieving orders of magnitude faster computational performance than DFT, the ANN-based approach was still very computationally demanding compared to the conventional approach of using empirically fitted energy functions. After its initial development, Aladyn was evaluated and optimized by experts at the NASA Advanced Supercomputing (NAS) division to exploit modern supercomputer architectures. The code has been optimized for execution on multicore central processing units (CPUs), including Intel Skylake microarchitecture, and on graphic accelerators, such as Nvidia V100 graphic processing units (GPUs), using Open Multi-Processing (OpenMP) and Open Accelerators (OpenACC) programming interfaces. The optimization achieved a speedup of 4.7 times the baseline version on CPU performance and an additional 2.4 times on CPU+GPU performance. Atomistic computer simulations are a fundamental tool in materials research to model material properties form physics-based first principles. Atomic interaction, governed by Quantum Mechanics (QM) require sophisticated and highly computationally demanding mathematical models to calculate [1]. Classical methods use approximate functional forms, empirically fitted through a set of variable parameters to emulate atomic energies as direct functions of atomic coordinates [2]. While empirical potentials are computationally much simpler, allowing simulations of large-scale systems of up to a trillion (1012) atoms [3], they are substantially less accurate compared to quantum calculations and applicable only to very specific atomic configurations or predefined crystallographic phases. A recently suggested approach is to use heuristic machine learning methods [4], such as those based on Adaptive Neural Networks (ANNs) to predict atomic energies, after being trained on a sufficiently large database of QM-calculated structures [5,6]. This approach reduces significantly the computational complexity, allowing for simulations of orders of magnitude larger systems compared to QM-based methods without compromising accuracy. Still, compared to classical methods using empirical energy functions, ANN methods remain two- to three orders of magnitude more computationally demanding. Hence, the computational cost of simulations, together with the need for extensive training of ANNs, still makes the practical implementation of ANN-based methods quite challenging. The purpose of the Aladyn mini-application software [7], available as open source at https://github.com/nasa/aladyn, is to be a testbed for exploring possible optimization strategies to develop highly scalable parallel algorithms for ANN-based atomistic simulations. Aladyn is aimed at utilizing the architecture of the high-end modern highperformance computing (HPC) hardware based on multicore central processing units (CPUs) equipped with graphic processing unit (GPU) accelerators. Specifically, the goal is to optimize the performance on a single HPC compute node, before implementing scaling to multi-node parallelization using message passing interface (MPI). At the same time, the open source code of Aladyn can serve as a training model for students and professors in academia.
    Keywords: Computer Programming and Software
    Type: NASA/TM–2019-220409 , L-21058 , NF1676L-34220
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    Applying the SPoRT Paradigm to Transitioning the Near Real-Time MAG4 Solar Event Forecast Model into Space Weather Operations (2019)
    In:  CASI
    Details
    Publication Date: 2019-12-19
    Description: No abstract available
    Keywords: Geophysics
    Type: MSFC-E-DAA-TN75661 , American Geophysical Union (AGU) Fall Meeting 2019; Dec 09, 2019 - Dec 13, 2019; San Francisco, CA; United States
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    Properties of Magnetic Reconnection and FTEs on the Dayside Magnetopause With and Without Positive IMF Bx Component During Southward IMF (2019)
    In:  Other Sources
    Details
    Publication Date: 2019-11-09
    Description: This paper describes properties and behavior of magnetic reconnection and flux transfer events (FTEs) on the dayside magnetopause using the global hybrid-Vlasov code Vlasiator. We investigate two simulation runs with and without a sunward (positive) B(sub x) component of the interplanetary magnetic field (IMF) when the IMF is southward. The runs are two-dimensional in real space in the noon-midnight meridional (polar) plane and three-dimensional in velocity space. Solar wind input parameters are identical in the two simulations with the exception that the IMF is purely southward in one but tilted 45 toward the Sun in the other. In the purely southward case (i.e., without B(sub x) the magnitude of the magnetosheath magnetic field component tangential to the magnetopause is larger than in the run with a sunward tilt. This is because the shock normal is perpendicular to the IMF at the equatorial plane, whereas in the other run the shock configuration is oblique and a smaller fraction of the total IMF strength is compressed at the shock crossing. Hence, the measured average and maximum reconnection rate are larger in the purely southward run. The run with tilted IMF also exhibits a north-south asymmetry in the tangential magnetic field caused by the different angle between the IMF and the bow shock normal north and south of the equator. Greater north-south asymmetries are seen in the FTE occurrence rate, size, and velocity as well; FTEs moving toward the Southern Hemisphere are larger in size and observed less frequently than FTEs in the Northern Hemisphere.
    Keywords: Geophysics
    Type: GSFC-E-DAA-TN73758 , Journal of Geophysical Research: Space Physics (e-ISSN 2169-9402); 124; 6; 4037-4048
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    eddy Users Manual (2019)
    In:  CASI
    Details
    Publication Date: 2019-12-12
    Description: eddy is a collection of tools - nonlinear solvers, meshing, post-processing, visualization, optimization, etc. - for performing scale-resolving simulations of multi-physics applications. The framework is designed to enable advanced R&D on a variety of topics by leveraging a mature capability for scale resolving simulations, and simultaneously be an appropriate tool for application analysis and support. Currently, eddy is at a relatively low technical readiness level (TRL), and users and developers should maintain appropriate expectations. The technical details behind eddy are outlined in several publications which can be consulted for more information [110]. The solvers are built around an unstructured high-order capability, and heavily utilize the tensor product sum-factorization approach for efficiency. The unsteady formulation utilizes a fully implicit space-time approach with a matrix-free Newton- Krylov method. A primitive steady-state solver is available for testing purposes, but is not expected to converge for all but simple verification cases. The Navier-Stokes fluid solvers do not support either RANS or hybrid-RANS capability, only LES and wall-modeled LES approaches. All of the solvers within eddy support three modes of operation: a primal solve of the full nonlinear problem, and two linearization approaches of the primal solve - the ad joint and the tangent solution. Details on how to select and use these three modes are outlined in Sec. 3.
    Keywords: Computer Programming and Software
    Type: ARC-E-DAA-TN70615
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    Seismic Recordings for SMARTIE1: Seismic Monitoring And Research of Wind Turbine Induced Emissions 1 (2019)
    GFZ Data Services
    Details
    Publication Date: 2023-02-08
    Description: Abstract
    Description: SMARTIE1 is a joint seismological experiment of the Karlsruhe Institute of Technology (KIT) and the Leipzig University. We installed in total 36 seismic stations as ring-like and profile-like measurements near to a single wind turbine (WT) at the Fraunhofer Institute for Chemical Technology (ICT) in Pfinztal, SW Germany, for 21 days. The main goals of this project are a better understanding of a single WT as a seismic source and the development of propagation models for the WT-induced seismic signals, depending on the geological properties. Waveform data are available from the GEOFON data centre, under network code X8 (under CC-BY 4.0 license according to GIPP-rules), and are embargoed until Jan 2020.
    Keywords: Broadband seismic waveforms ; Seismology ; temporary local seismic experiment ; induced seismic signals ; wind turbine ; Monitoring system ; Seismological stations ; In Situ/Laboratory Instruments 〉 Magnetic/Motion Sensors 〉 Seismometers ; In Situ Land-based Platforms 〉 GEOPHYSICAL STATIONS/NETWORKS
    Type: Dataset , Seismic Network
    Format: ~1T
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    One year of seismic records of an array installed on a taiwanese ridge (2019)
    GFZ Data Services
    Details
    Publication Date: 2024-02-23
    Description: Abstract
    Description: A line of 6 broadband seismometers have been deployed across a ridge in the Hualien County (Eastern Taiwan). From March 2015 to June 2016 the network has been continuously recording waves incoming from the Taiwanese regional seismicity. During that period, more than 2000 earthquakes with magnitudes Ml〉3 and distant from less than 200km were recorded. The hill is well approximated by a triangular topography of 3600m in length by 900m in height. Waveform data are open and available from the GEOFON data centre, under network code 5K.
    Keywords: Broadband seismic waveforms ; Seismology ; temporary local seismic experiment ; Monitoring system ; EARTH SCIENCE 〉 SOLID EARTH ; In Situ/Laboratory Instruments 〉 Magnetic/Motion Sensors 〉 Seismometers ; In Situ Land-based Platforms 〉 GEOPHYSICAL STATIONS/NETWORKS ; In Situ Land-based Platforms 〉 GEOPHYSICAL STATIONS/NETWORKS 〉 SEISMOLOGICAL STATIONS
    Type: Dataset , Seismic Network
    Format: ~240G
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    Multi-scale imaging of the Main Pamir Thrust faults within the framework of CaTeNA project – Climatic and Tectonic Natural Hazards in Central Asia (2019)
    GFZ Data Services
    Details
    Publication Date: 2024-02-23
    Description: Abstract
    Description: We propose to investigate the structure and evolution of the Main Pamir Thrust (MPT) with a high-density seismological array. The MPT, with its surface expression along the east-west trending Alai Valley, marks the northern boundary of the Pamir. The Alai Valley, separating the Pamir and the Tien Shan, constitutes the last vestige of a formerly continuous basin that linked the Tarim and the Tajik Basins. The MPT manifests itself as a place of high seismic activity with frequently occurred disastrous earthquakes. The array is about 50 km long, consisted of 90 three-component geophones (stations G?? and C??) and 10 Trillium-Compact seismometers (stations T??), and equipped with 100 CUBE dataloggers. We will construct a high-resolution receiver function profile to image the MPT and accurately locate the local earthquakes associated with the MPT. Funded by BMBF, within the framework of CaTeNA project – Climatic and Tectonic Natural Hazards in Central Asia. Waveform data are available from the GEOFON data centre, under network code 7A and are embargoed until Jan 2024.
    Keywords: Broadband seismic waveforms ; Seismology ; temporary local seismic experiment ; Monitoring system ; EARTH SCIENCE 〉 SOLID EARTH ; In Situ/Laboratory Instruments 〉 Magnetic/Motion Sensors 〉 Seismometers ; In Situ Land-based Platforms 〉 GEOPHYSICAL STATIONS/NETWORKS ; In Situ Land-based Platforms 〉 GEOPHYSICAL STATIONS/NETWORKS 〉 SEISMOLOGICAL STATIONS
    Type: Dataset , Seismic Network
    Format: ~240G
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    Dataset of the 6G seismic network at Los Humeros, 2017-2018 (2019)
    GFZ Data Services
    Details
    Publication Date: 2024-02-23
    Description: Abstract
    Description: Extensive passive seismic monitoring was carried out between September 2017 and September 2018 over the Los Humeros geothermal field in Mexico. This experiment, in addition to several geophysical, geological, and geochemical surveys was conducted in the framework of the European H2020 and Mexican CONACyT-SENER project GEMex for a better understanding of the structures and behavior of the local geothermal system currently under exploitation, and for investigating future development areas. 25 broadband stations (22 Trillium C-120s and 3 Trillium C-20 PH) recording at 200 Hz, and 20 short period stations (Mark L-4C-3D) recording at 100 Hz comprised the network which is sub-divided into two sub-networks. An inner and denser (~1.6-2 km inter-station distance) pseudo-rhomboidal array (27 stations) was laid out to cover the producing zone and retrieve local seismicity mainly associated to injection and production operations, and to comply with beamforming of ambient noise and time reverse imaging techniques. An outer and sparser (~5 km minimum spacing) array was placed at around 30 km radius surrounding the inner network, and was mainly dedicated to larger scale imaging techniques, such as seismic ambient noise tomography, and regional earthquakes tomography. The GEMex project is supported by the European Union’s Horizon 2020 programme for Research and Innovation under grant agreement No 727550 and the Mexican Energy Sustainability Fund CONACYT-SENER, project 2015-04-68074. Waveform data are available from the GEOFON data centre, under network code 6G and are embargoed until Jan 2023.
    Keywords: Broadband seismic waveforms ; Seismology ; temporary local seismic experiment ; Monitoring system ; EARTH SCIENCE 〉 SOLID EARTH ; In Situ/Laboratory Instruments 〉 Magnetic/Motion Sensors 〉 Seismometers ; In Situ Land-based Platforms 〉 GEOPHYSICAL STATIONS/NETWORKS ; In Situ Land-based Platforms 〉 GEOPHYSICAL STATIONS/NETWORKS 〉 SEISMOLOGICAL STATIONS
    Type: Dataset , Seismic Network
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    The AlpArray Seismic Network: A Large-Scale European Experiment to Image the Alpine Orogen (2019)
    Details
    Publication Date: 2019-12-05
    Description: The AlpArray programme is a multinational, European consortium to advance our understanding of orogenesis and its relationship to mantle dynamics, plate reorganizations, surface processes and seismic hazard in the Alps–Apennines–Carpathians–Dinarides orogenic system. The AlpArray Seismic Network has been deployed with contributions from 36 institutions from 11 countries to map physical properties of the lithosphere and asthenosphere in 3D and thus to obtain new, high-resolution geophysical images of structures from the surface down to the base of the mantle transition zone. With over 600 broadband stations operated for 2 years, this seismic experiment is one of the largest simultaneously operated seismological networks in the academic domain, employing hexagonal coverage with station spacing at less than 52 km. This dense and regularly spaced experiment is made possible by the coordinated coeval deployment of temporary stations from numerous national pools, including ocean-bottom seismometers, which were funded by different national agencies. They combine with permanent networks, which also required the cooperation of many different operators. Together these stations ultimately fill coverage gaps. Following a short overview of previous large-scale seismological experiments in the Alpine region, we here present the goals, construction, deployment, characteristics and data management of the AlpArray Seismic Network, which will provide data that is expected to be unprecedented in quality to image the complex Alpine mountains at depth.
    Description: Published
    Description: 1009–1033
    Description: 1T. Struttura della Terra
    Description: JCR Journal
    Keywords: Seismology ; Alps ; Seismic network ; Geodynamics ; Seismic imaging ; Mountain building
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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    Journal of Geophysics - Zeitschrift für Geophysik 60 (2019)
    Springer, Berlin
    In:  SUB Göttingen | 8 Z NAT 2148:60
    Details
    Publication Date: 2021-03-29
    Description: Dieser Band enthält 26 Artikel zu Themengebieten der Geophysik, veröffentlicht durch die Deutsche Geophysikalische Gesellschaft in dem Jahr 1986.
    Description: Inhaltsverzeichnis: Journal of Geophysics 60 〈html〉 〈body〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0011.pdf"〉Investigation of the velocity- and Q-structure of the lowermost mantle using 〈i〉PcP〈/i〉/〈i〉P〈/i〉 amplitude ratios from arrays at distances of 70°–84°〈/a〉〈br〉 (Schlittenhardt, J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0014.pdf"〉Fast plane-wave and single-shot migration by Fourier transform〈/a〉〈br〉 (Temme, P., Müller, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0015.pdf"〉A method of calculating lithosphere thickness from observations of deglacial land uplift and tilt〈/a〉〈br〉 (Wolf, D.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0016.pdf"〉Volcanoes, fountains, earthquakes, and continental motion – What causes them? 〈/a〉〈br〉 (Kundt, W., Jessner, A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0017.pdf"〉Magnetic properties and oxidation experiments with synthetic olivines〈/a〉〈br〉 (Fe〈sub〉χ〈/sub〉Mg〈sub〉1–χ〈/sub〉)〈sub〉2〈/sub〉SiO〈sub〉4〈/sub〉, 0≦χ≦1 (Hoffmann, V., Soffel, H.C.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0018.pdf"〉Magnetic mineralogy of basalts from El-Bahnasa and Tahna, Egypt〈/a〉〈br〉 (Wassif, N.A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0020.pdf"〉On the use of line current analogues in geomagnetic depth sounding〈/a〉〈br〉 (Jones, A.G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0021.pdf"〉Observations of the VLF quiet band phenomenon〈/a〉〈br〉 (Matthews, J.P.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0022.pdf"〉In memoriam Gustav Adolf Schulze (1911–1986)〈/a〉〈br〉 (Dürschner, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0023.pdf"〉Book reviews〈/a〉〈br〉 (Berckhemer, H., Dieminger, W., Engelhard, L.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0024.pdf"〉Hydromagnetic waves at low latitudes: a symposium review from the fifth IAGA assembly〈/a〉〈br〉 (Fraser, B.J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0025.pdf"〉Generation and propagation mechanisms of low-latitude magnetic pulsations – A review〈/a〉〈br〉 (Yumoto, K.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0026.pdf"〉Experimental aspects of low-latitude pulsations - A review〈/a〉〈br〉 (Verö, J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0027.pdf"〉GRF broad-band array analysis of the 1982 Miramichi, New Brunswick earthquake sequence〈/a〉〈br〉 (Basham, P.W., Kind, R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0028.pdf"〉Rockmagnetism and palaeomagnetism of an early Cretaceous/Late Jurassic dike swarm in Rio Grande do Norte, Brazil〈/a〉〈br〉 (Bücker, C., Schult, A., Bloch, W., Guerreiro, S.D.C.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0029.pdf"〉Second Conference on Scientific Ocean Drilling〈/a〉〈br〉 (COSOD II)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0030.pdf"〉Book reviews〈/a〉〈br〉 (Jentzsch, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0031.pdf"〉Deep-seated lateral velocity variations beneath the GRF array inferred from mislocation patterns and P residuals〈/a〉〈br〉 (Faber, S., Plomerová, J., Babuška, V.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0034.pdf"〉Lateral variations of the structure of the crust-mantle boundary from conversions of teleseismic 〈i〉P〈/i〉 waves〈/a〉〈br〉 (Qiyuan, L., Kind, R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0035.pdf"〉Cross spectral analysis of Swabian Jura (SW Germany) three-component microearthquake recordings〈/a〉〈br〉 (Scherbaum, F., Wendler, J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0036.pdf"〉The retrieval of the seismic moment tensor from first-order perturbation theory and generation of compatible models〈/a〉〈br〉 (Lana, X., Correig, A.M.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0037.pdf"〉Impulsive processes in the magnetotail during substorm expansion〈/a〉〈br〉 (Sergeev, V.A., Bösinger, T., Lui, A.T.Y)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0038.pdf"〉Spatial and temporal characteristics of impulsive structure of magnetospheric substorm〈/a〉〈br〉 (Sergeev, V.A., Pellinen, R.J., Bösinger, T., Baumjohann, W., Stauning, P., Lui, A.T.Y.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0039.pdf"〉Seismic signal velocity in absorbing media〈/a〉〈br〉 (Schmidt, T., Müller, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0040.pdf"〉In memoriam Nachruf Professor Ludwig Biermann〈/a〉〈br〉 (Treffitz, E.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0060/LOG_0041.pdf"〉Book Reviews〈/a〉〈br〉 (Korn, M.)〈/a〉〈/li〉 〈/body〉 〈/html〉
    Description: research
    Description: DFG, SUB Göttingen
    Keywords: 550 ; Earthquakes ; Earth's Mantle ; Geomagnetic Pulsations ; Germany ; Inverse Problems ; Magnetosphere ; Rock Magnetism ; Seismology ; Seismograms ; FID-GEO-DE-7
    Language: English
    Type: anthology_digi
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    CITATION GEO-LEO
  • 81
    facet.materialart.
    Unknown
    Journal of Geophysics - Zeitschrift für Geophysik 49 (2019)
    Springer, Berlin
    In:  SUB Göttingen | 8 Z NAT 2148:49
    Details
    Publication Date: 2021-03-29
    Description: Dieser Band enthält Artikel zu 41 Themengebieten der Geophysik, veröffentlicht durch die Deutsche Geophysikalische Gesellschaft in dem Jahr 1981.
    Description: Inhaltsverzeichnis: Journal of Geophysics 49 〈html〉 〈body〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0011.pdf"〉Palaeomagnetism of a Jurassic Ophiolite Series in East Elba (Italy) 〈/a〉〈br〉 (Soffel, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0013.pdf"〉Paleomagnetic Evidence from Mesozoic Carbonate Rocks for the Rotation of Sardinia〈/a〉〈br〉 (Horner, F., Lowrie, W.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0015.pdf"〉A Geotectonic Paradox: Has the Earth Expanded? 〈/a〉〈br〉 (Schmidt, P. W., Embleton, B. J. J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0016.pdf"〉Application of Magnetotelluric and DC Electrical Resistivity Methods in the Neapolitan Geothermal Area〈/a〉〈br〉 (Hunsche, U., Rapolla, A., Musmann, G., Alfano, L.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0018.pdf"〉Velocity Variations in Systems of Anisotropic Symmetry〈/a〉〈br〉 (Crampin, S., Kirkwood, S. C.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0019.pdf"〉Shear-Wave Singularities of Wave Propagation in Anisotropic Media〈/a〉〈br〉 (Crampin, S., Yedlin, M.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0020.pdf"〉Temperature Derivatives of Compressional and Shear Wave Velocities in Crustal and Mantle Rocks at 6 kbar Confining Pressure〈/a〉〈br〉 (Kern, H., Richter, A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0021.pdf"〉A Crustal Gravity Model of the Mare Serenitatis - Mare Crisium Area of the Moon〈/a〉〈br〉 (Janle, P.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0022.pdf"〉On the Origin of the Annual Wave in Hemispheric Geomagnetic Activity〈/a〉〈br〉 (Meyer, J., Damaske, D.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0023.pdf"〉On the Relation Between Magnetic Field-Aligned Electrostatic Electron Acceleration and the Resulting Auroral Energy Flux〈/a〉〈br〉 (Wilhelm, K.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0024.pdf"〉Application of Different Methods for the Determination of Ionospheric Conductivities from Sounding Rocket Observations〈/a〉〈br〉 (Brüning, K., Baumjohann, W., Wilhelm, K., Stüdemann, W., Urban, A., Ott, W., Spenner, K., Schmidtke, G. L., Fischer, H. M.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0025.pdf"〉Numerical Experiments on Convection in a Chemically Layered Mantle〈/a〉〈br〉 (Christensen, U.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0026.pdf"〉〈i〉Book Reviews〈/i〉〈/a〉〈br〉 (Raikes, S. A., Engelhard, L., Pape, H., Theile, B.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0028.pdf"〉Steady State Creep of Fine Grain Granite at Partial Melting〈/a〉〈br〉 (Auer, F., Berckhemer, H., Oehlschlegel, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0029.pdf"〉Laboratory Synthesis of Aluminium-Substituted Titanomaghemites and Their Characteristic Properties〈/a〉〈br〉 (Özdemir, Ö, O’Reilly, W.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0030.pdf"〉Densities and Magnetic Susceptibilities of Precambrian Rocks of Different Metamorphic Grade〈/a〉〈br〉 (Southern Indian Shield) (Subrahmanyam, C., Verma, R. K.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0031.pdf"〉Lithospheric Structure and Teleseismic 〈i〉P〈/i〉-Wave Reflection Delays Under Fennoscandia and Siberia〈/a〉〈br〉 (Stewart, Ian C. F.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0033.pdf"〉Propagation of Surface Waves in Marine Sediments〈/a〉〈br〉 (Essen, H.-H., Janle, H., Schirmer, F., Siebert, J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0035.pdf"〉Simultaneous Observation of an Intense 65 keV Field-Aligned Proton Beam and ULF-waves During a Break-up Event〈/a〉〈br〉 (Stüdemann, W., Goertz, C. K.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0036.pdf"〉Observations of Field-Aligned Current Sheets Above Discrete Auroral Arcs〈/a〉〈br〉 (Wilhelm, K., Klöcker, N., Theile, B., Ott, W., Spenner, K., Grabowski, R., Wolf, H., Stüdemann, W., Dehmel, G., Fischer, H. M., Schmidtke, G. L., Baumjohann, W., Riedler, W., Urban, A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0038.pdf"〉Multi-Method Observations and Modelling of the Three-Dimensional Currents Associated with a Very Strong Ps6 Event〈/a〉〈br〉 (Gustafsson, G., Baumjohann, W., Iversen, I.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0040.pdf"〉Variability of Solar EUV Fluxes and Exospheric Temperatures〈/a〉〈br〉 (Schmidtke, G., Börsken, N., Sünder, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0041.pdf"〉Paleomagnetism of Quaternary and Miocene Lavas from North-East and Central Morocco〈/a〉〈br〉 (Najid, D., Westphal, M., Hernandez, J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0042.pdf"〉In Memoriam Wilhelm Hiller〈/a〉〈br〉 (Schneider, Götz)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0043.pdf"〉〈i〉Book Reviews〈/i〉〈/a〉〈br〉 (Wilhelm, H., Neubauer, F. M., Schopper, J. R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0044.pdf"〉Joint Two-Dimensional Observations of Ground Magnetic and Ionospheric Electric Fields Associated with Auroral Zone Currents〈/a〉〈br〉 (Inhester, B., Baumjohann, W., Greenwald, R. A., Nielsen, E.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0045.pdf"〉Current Flow in Auroral Forms Responsible for Ps 6 Magnetic Disturbances〈/a〉〈br〉 (Rostoker, G., Apps, K. S.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0046.pdf"〉Correlation of Geomagnetic Activity Indices ap with the Solar Wind Speed and the Southward Interplanetary Magnetic Field〈/a〉〈br〉 (Schreiber, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0047.pdf"〉High Time-Resolution Correlation Between the Magnetic Field Behaviour at 37 〈i〉R〈/i〉〈sub〉E〈/sub〉 Distance in the Magnetotail Plasma Sheet and Ground Phenomena During Substrom Expansive Phase〈/a〉〈br〉 (Sergeev, V. A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0048.pdf"〉Simultaneous Observations of Energetic Protons Close to the Bow Shock and Far Upstream〈/a〉〈br〉 (Scholer, M., Ipavich, F. M., Gloeckler, G., Hovestadt, D.)〈/a〉〈/li〉 〈li〉〈a href=" https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0049.pdf"〉Non-Adiabatic Expansion of Low-Temperature Solar Wind Radial Temperature Gradients〈/a〉〈br〉 (Geranios, A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0050.pdf"〉Correlation Between Seismic Microactivity, Temperature and Subsidence of Water Level at Reservoirs〈/a〉〈br〉 (Merkler, G., Bock, G., Fuchs, K.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0052.pdf"〉〈sup〉40〈/sup〉Ar/〈sup〉39〈/sup〉Ar Dating of Himalayan Rocks from the Mount Everest Region〈/a〉〈br〉 (Kaneoka, Ichiro, Kono, Masaru)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0053.pdf"〉A Comparison of the Thermal and Mechanical Structure of the Lithosphere Beneath the Bohemian Massif and the Pannonian Basin〈/a〉〈br〉 (Onuoha, K. M.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0054.pdf"〉Extremal Models for Electromagnetic Induction in Two-Dimensional Perfect Conductors〈/a〉〈br〉 (Weidelt, P.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0055.pdf"〉On a Type Classification of Lower Crustal Layers Under Precambrian Regions〈/a〉〈br〉 (Jones, A. G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0056.pdf"〉Spherical-Earth Gravity and Magnetic Anomaly Modeling by Gauss-Legendre Quadrature Integration〈/a〉〈br〉 (Frese, R. R. B., Hinze, W. J., Braile, L. W., Luca, A. J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0057.pdf"〉Detection Probabilities for Earthquakes in Sweden〈/a〉〈br〉 (Shapira, A., Kulhánek, O., Wahlström, R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0058.pdf"〉The Geocyclotron Revisited: Potentialities of Modulated Wave Injection〈/a〉〈br〉 (Brinca, A. L.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0059.pdf"〉Eine kleine Historie zur Namengebung der Fachdisziplin Geophysik〈/a〉〈br〉 (Buntebarth, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0049/LOG_0060.pdf"〉〈i〉Correction〈/i〉: High Precision Measurement of the Frequency of Mode 〈sub〉0〈/sub〉S〈sub〉0〈/sub〉〈/a〉〈br〉 (Zürn, W., Knopoff, L., Rydelek, P. A.)〈/a〉〈/li〉 〈/body〉 〈/html〉
    Description: research
    Description: DFG, SUB Göttingen
    Keywords: 550 ; Aeronomy ; Aurora ; Canada ; Electromagnetism ; Geomagnetism ; Geomagnetismus ; Geophysics ; Geophysik ; Himalaya ; India ; Ionosphere ; Ionosphäre ; Italy ; Lithosphere ; Lithosphäre ; Magnetotellurics ; Magnetotellurik ; Moon ; Morocco ; Palaeomagnetism ; Paläomagnetismus ; Rock Magnetism ; Seismology ; Seismologie ; Siberia ; Waves ; Wellen ; FID-GEO-DE-7
    Language: German , English
    Type: anthology_digi
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    CITATION GEO-LEO
  • 82
    facet.materialart.
    Unknown
    Journal of Geophysics - Zeitschrift für Geophysik 41 (2019)
    Springer, Berlin
    In:  SUB Göttingen | 8 Z NAT 2148:41
    Details
    Publication Date: 2021-03-29
    Description: Dieser Band enthält 58 Artikel zu Themengebieten der Seismologie, Erdmagnetismus und Gesteinsphysik veröffentlicht durch die Deutsche Geophysikalische Gesellschaft in dem Jahr 1975.
    Description: Inhaltsverzeichnis: Journal of Geophysics 41 〈html〉 〈body〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0011.pdf"〉Statistical Behaviour of Elastic Waves in a Reverberating Solid〈/a〉〈br〉 (Drisler, J., Antony-Spies, P.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0013.pdf"〉A Compressed Air Gun Accelerator for Shock Magnetization and Demagnetization Experiments up to 20 kbar〈/a〉〈br〉 (Hornemann, U., Pohl, J., Bleil, U.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0014.pdf"〉Shock Magnetization and Demagnetization of Basalt by Transient Stress up to 10 kbar〈/a〉〈br〉 (Pohl, J., Bleil, U., Hornemann, U.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0015.pdf"〉K-Ar-Altersbestimmungen an Vulkaniten bekannter paläomagnetischer Feldrichtung〈/a〉〈br〉 (Todt, W., Lippolt, H. J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0017.pdf"〉Dispersed Shots at Optimum Depth - An Efficient Seismic Source for Lithospheric Studies〈/a〉〈br〉 (Jacob, A. W. B.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0018.pdf"〉Crustal Structure and 〈i〉P〈/i〉-Wave Travel Time Anomalies at NORSAR〈/a〉〈br〉 (Berteussen, K. A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0019.pdf"〉Electromagnetic Induction in Three-Dimensional Structures〈/a〉〈br〉 (Weidelt, P.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0021.pdf"〉Acoustic Normal Modes Generated by Explosive Sources〈/a〉〈br〉 (Essen, H.-H., Kebe, H.-W., Siebert, J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0022.pdf"〉Hydromagnetic Waves in a Non-Uniform Plasma〈/a〉〈br〉 (Kupfer, E.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0023.pdf"〉Time-Domain Electromagnetic INPUT Rresponse of a Conducting Horizontal Thin Sheet〈/a〉〈br〉 (Mallick, K., Jain, S. C.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0024.pdf"〉〈i〉Book Reviews〈/i〉〈/a〉〈br〉 (Walk, O.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0025.pdf"〉Seismic Investigation along the Scandinavian "Blue Road" Traverse〈/a〉〈br〉 (Hirschleber, H. B., Lund, C.-E., Meissner, R., Vogel, A., Weinrebe, W.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0028.pdf"〉Computations of 〈i〉SV〈/i〉 Waves in Realistic Earth Models〈/a〉〈br〉 (Kind, R., Müller, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0030.pdf"〉On Tracing Seismic Rays with Specified End Points〈/a〉〈br〉 (Chander, Ramesh)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0031.pdf"〉Geothermal Models of the Ivrea-Zone〈/a〉〈br〉 (Höhndorf, A., Haenerl, R., Giesel, W.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0033.pdf"〉A Note on the Palaeomagnetism of the Late Precambrian Malani Rhyolites near Jodhpur - India〈/a〉〈br〉 (Klootwijk, C. T.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0035.pdf"〉An Evaluation Method Combining the Differential Doppler Measurements from Two Stations that Enables the Calculation of the Electron Content of the Ionosphere〈/a〉〈br〉 (Leitinger, R., Schmidt, G., Tauriainen, A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0037.pdf"〉Measured and Calculated Secondary Electron Energy Spectra (20 - 1500 eV) above 120 km〈/a〉〈br〉 (Loidl, A., Schlegel, K.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0038.pdf"〉〈i〉Book Reviews〈/i〉〈/a〉〈br〉 (Mayer, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0039.pdf"〉The Behaviour of Minor Species in the Solar Wind〈/a〉〈br〉 (Ryan, J. M., Axford, W. I.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0040.pdf"〉The Effect of Low Energetic Electrons in the Polar Ionosphere〈/a〉〈br〉 (Hartmann, G. K.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0041.pdf"〉Transmission of Electric Fields and Photoelectron Fluxes Between Conjugate Ionospheric F2-Regions〈/a〉〈br〉 (Petelski, E. F.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0043.pdf"〉Characteristics of Azimuth Independent Optimum Velocity Filters Designed for Two-Dimensional Arrays〈/a〉〈br〉 (Hubral, P.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0045.pdf"〉Travel Time Residuals in the Iranian Plateau〈/a〉〈br〉 (Akasheh, B.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0046.pdf"〉Noise Variance Fluctuations and Earthquake Detectability〈/a〉〈br〉 (Steinert, O., Husebye, S., Gjøystdal, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0048.pdf"〉An Electronic Filter and Damping System for the Askania Borehole Tiltmeter〈/a〉〈br〉 (Flach, D., Große-Brauckmann, W.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0049.pdf"〉Two-Dimensional Magnetotelluric Model Calculations for Overhanging, High-Resistivity Structures〈/a〉〈br〉 (Losecke, W., Müller, W.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0052.pdf"〉A New Type of Vertical Gravity Gradiometer〈/a〉〈br〉 (Groten, E.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0053.pdf"〉Letters to the Editors: Comment on Hydromagnetic Waves in a Non-Uniform Plasma by E. Kupfer〈/a〉〈br〉 (Siebert, M.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0054.pdf"〉〈i〉Book Reviews〈/i〉〈/a〉〈br〉 (Wilhelm, H., Burkhardt, H., Strobach, K.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0055.pdf"〉Deep Structure of the Southern Rhinegraben Area from Seismic Refraction Investigations〈/a〉〈br〉 (Edel, J. B., Fuchs, K., Gelbke, C., Prodehl, C.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0058.pdf"〉Faeroe Islands - a Microcontinental Fragment? 〈/a〉〈br〉 (Casten, U., Hedebol Nielsen, P.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0059.pdf"〉A Seismic Reflection Method for Solving Engineering Problems〈/a〉〈br〉 (Schepers, R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0061.pdf"〉The Palaeomagnetism of Age Dated Tertiary Volcanites of the Monti Lessini (Northern Italy) and its Implication to the Rotation of Northern Italy〈/a〉〈br〉 (Soffel, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0064.pdf"〉Rock Magnetism of the Monti Lessini and Monte Berici Volcanites and Age of Volcanism Deduced from the Heirtzler Polarity Time Scale〈/a〉〈br〉 (Soffel, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0065.pdf"〉Supersonic Plasma Flow Between High Latitude Conjugate Ionospheres〈/a〉〈br〉 (Rösler, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0066.pdf"〉Crustal Structure of the Aegean Sea and the Hellenides Obtained from Geophysical Surveys〈/a〉〈br〉 (Makris, J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0068.pdf"〉〈i〉Book Reviews〈/i〉〈/a〉〈br〉 (Neubauer, F. M.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0069.pdf"〉Synthetic Seismograms of PS-Reflections from Transition Zones Computed with the Reflectivity Method〈/a〉〈br〉 (Fuchs, K.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0071.pdf"〉Explosions in Shallow Water for Deep Seismic Sounding Experiments〈/a〉〈br〉 (Burkhardt, H., Vees, R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0073.pdf"〉Seegangserzwungene elastische Bewegungen des Nordseebodens〈/a〉〈br〉 (Janle, P., Rudloff, R., Schmalfeldt, B., Szelwis, R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0077.pdf"〉Interpretation of a Gravity Profile Across the Southern Part of the Hon Graben, Libya〈/a〉〈br〉 (Soffel, H., Peters, K., Pohl, J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0079.pdf"〉A Comparison of Methods for Computing Surface Densities of the Geopotential from Satellite Altimetry〈/a〉〈br〉 (Benning, W.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0080.pdf"〉An Economically Working Method for Computing the Gravimetric Terrain Correction〈/a〉〈br〉 (Boedecker, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0081.pdf"〉Pressure Dependence of Elastic Wave Characteristics of Ultramafic Rocks of India〈/a〉〈br〉 (Ramana, Y. V., Rao, M. V. M. S., Gogte, B. S.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0082.pdf"〉Paleogravity - A Possible Chance for Determination of Paleo-Geographic North〈/a〉〈br〉 (Stegena, L.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0083.pdf"〉Electromagnetic Induction at Dili, Portuguese Timor〈/a〉〈br〉 (Chamalaun, F. H., White, A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0084.pdf"〉Preliminary Polar Wander Path of Central Iran〈/a〉〈br〉 (Soffel, H., Förster, H., Becker, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0085.pdf"〉Ein astasiertes Vertikalpendel mit tragender Blattfeder〈/a〉〈br〉 (Wielandt, E.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0086.pdf"〉〈i〉Book Reviews〈/i〉〈/a〉〈br〉 (Schneider, G., Suchy, K.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0087.pdf"〉Wave and Particle Observations by Explorer 45 Pertaining to Wave-Particle Interactions〈/a〉〈br〉 (Fritz, T. A., Williams, D. J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0093.pdf"〉Probability Distribution of Earthquake Accelerations with Applications to Sites in the Northern Rhine Area, Central Europe〈/a〉〈br〉 (Ahorner, L., Rosenhauer, W.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0095.pdf"〉〈i〉P〈/i〉 Wave Amplitude Variability at NORSAR〈/a〉〈br〉 (Berteussen, K. A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0096.pdf"〉Magnetic Hysteresis Loops and Magnetization Versus Temperature Curves of Some Basalt Samples Containing Titanomagnetite Ore either Single-Phase or with an Intergrowth of Ilmenite Lamellae〈/a〉〈br〉 (Schmidbauer, E.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0098.pdf"〉The Change of Isothermal Saturation Rremanent Magnetization of Basalts as a Result of Cyclic Elastic Deformation〈/a〉〈br〉 (Kapička, A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0100.pdf"〉K-Ar-Altersbestimmungen an Vulkaniten bekannter paläomagnetischer Feldrichtung, II. Sachsen〈/a〉〈br〉 (Todt, W., Lippolt, H. J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0102.pdf"〉An Anomaly of the Upper Mantle Below the Rhine Graben, Studied by the Inductive Response of Natural Electromagnetic Fields〈/a〉〈br〉 (Reitmayr, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0103.pdf"〉Some Problems of Large-Scale Gravity Interpretation〈/a〉〈br〉 (Groten, E.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0041/LOG_0106.pdf"〉[Rezensionen] 〈/a〉〈br〉 (Haack, V., Höschele, K.)〈/a〉〈/li〉 〈/body〉 〈/html〉
    Description: research
    Description: DFG, SUB Göttingen
    Keywords: 550 ; Aegan Sea ; Applied Geophysics ; Seismology ; Atlantic Ocean ; Electrical Conductivity Anomalies ; Crustal Structure ; Doppler Effect ; Earthquakes ; Electromagnetism ; Faeroe Islands ; Germany ; Gravimetrie ; Gravimetry ; Greece ; India ; Ionosphere ; Ionosphäre ; Iran ; Libya ; Magnetosphere ; Paleomagnetism ; Rock Magnetism ; Seismology ; Solar Wind ; Tiltmeter ; Elastic Wave ; Volcanics ; Waves ; Wellen ; FID-GEO-DE-7
    Language: German , English
    Type: anthology_digi
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    CITATION GEO-LEO
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    Journal of Geophysics - Zeitschrift für Geophysik 43 (2019)
    Springer, Berlin
    In:  SUB Göttingen | 8 Z NAT 2148:43
    Details
    Publication Date: 2021-03-29
    Description: Dieser Band enthält 78 Artikel zu Themengebieten der Geophysik, veröffentlicht durch die Deutsche Geophysikalische Gesellschaft in dem Jahr 1977.
    Description: Inhaltsverzeichnis: Journal of Geophysics 43 〈html〉 〈body〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0012.pdf"〉Editors' Preface〈/a〉〈br〉 (Fuchs, K., Müller, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0013.pdf"〉Full Wave Theory Applied to a Discontinuous Velocity Increase: The Inner Core Boundary〈/a〉〈br〉 (Cormier, V. F., Richards, P. G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0016.pdf"〉Propagation of Elastic Waves in Vertically Inhomogeneous Media〈/a〉〈br〉 (Ungar, A., Ilan, A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0017.pdf"〉Finite-Difference Modelling for P-Pulse Propagation in Elastic Media with Arbitrary Polygonal Surface〈/a〉〈br〉 (Ilan, A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0020.pdf"〉Extension of Matrix Methods to Structures with Slightly Irregular Stratification〈/a〉〈br〉 (Cisternas, A., Jobert, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0021.pdf"〉Modal Approach to Wave Propagation in Layered Media with Lateral Inhomogeneities〈/a〉〈br〉 (Saastamoinen, P. R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0022.pdf"〉On the Propagation of Seismic Pulses in a Porous Elastic Solid〈/a〉〈br〉 (Mainardi, F., Servizi, G., Turchetti, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0023.pdf"〉Three-Dimensional Seismic Ray Tracing〈/a〉〈br〉 (Julian, B. R., Gubbins, D.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0025.pdf"〉On Geophysical Inverse Problems and Constraints〈/a〉〈br〉 (Sabatier, P. C.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0027.pdf"〉On Impulse Response Data and the Uniqueness of the Inverse Problem〈/a〉〈br〉 (Barcilon, V.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0028.pdf"〉Least-Squares Collocation and the Gravitational Inverse Problem〈/a〉〈br〉 (Moritz, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0029.pdf"〉The Statistical Description and Interpretation of Geophysical Potential Fields Using Covariance Functions〈/a〉〈br〉 (Kautzleben, H., Harnisch, M., Schwahn, W.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0030.pdf"〉A Finite Element Program Package for Electromagnetic Modeling〈/a〉〈br〉 (Kaikkonen, P.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0032.pdf"〉Linear Inverse Problem in Gravity Profile Interpretation〈/a〉〈br〉 (Vigneresse, J. L.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0034.pdf"〉Data Seizing and Information Processing〈/a〉〈br〉 (Picard, C. F., Sallantin, J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0035.pdf"〉Formal Morphostructural Zoning of Mountain Territories〈/a〉〈br〉 (Alekseevskaya, M., Gabrielov, A., Gel’fand, I., Gvishiani, A., Rantsman, E.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0036.pdf"〉Three Dimensional Seismic Velocity Anomalies in the Lithosphere〈/a〉〈br〉 (Aki, Keiiti)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0038.pdf"〉The Inversion of Long Range Seismic Profiles〈/a〉〈br〉 (Kennett, B. L. N.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0040.pdf"〉An Oceanic Long Range Explosion Experiment〈/a〉〈br〉 (Orcutt, J. A., Dorman, L. M.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0041.pdf"〉The Upper Mantle Under Western Europe Inferred from the Dispersion of Rayleigh Modes〈/a〉〈br〉 (Nolet, Guust)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0044.pdf"〉Global and Regional Phase Velocities of Long-Period Fundamental Mode Rayleigh Waves〈/a〉〈br〉 (Mitronovas, W.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0045.pdf"〉The Inversion of Surface Wave Dispersion Data with Random Errors〈/a〉〈br〉 (Knopoff, L., Chang, F.-S.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0048.pdf"〉Finite Difference Calculation of Stress Relaxation Earthquake Models〈/a〉〈br〉 (Stöckl, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0050.pdf"〉On Equivalent Models of Seismic Sources〈/a〉〈br〉 (Jobert, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0051.pdf"〉A Method for Synthesis of the Seismic Coda of Local Earthquakes〈/a〉〈br〉 (Herrmann, R. B.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0055.pdf"〉Application of Two-Timing Methods in Statistical Geophysics〈/a〉〈br〉 (Hasselmann, K.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0056.pdf"〉Scattered Waves in the Coda of P〈/a〉〈br〉 (Hudson, J. A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0057.pdf"〉Elastic Wave Propagation in a Highly Scattering Medium – A Diffusion Approach〈/a〉〈br〉 (Dainty, A. M., Toksöz, M. N.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0058.pdf"〉Seismic Energy Transmission in an Intensively Scattering Environment〈/a〉〈br〉 (Nakamura, Yosio)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0060.pdf"〉Scattering of Rayleigh Waves by a Ridge〈/a〉〈br〉 (Sabina, F. J., Willis, J. R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0061.pdf"〉Mean-Field Electrodynamics and Dynamo Theory of the Earth's Magnetic Field〈/a〉〈br〉 (Krause, F.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0064.pdf"〉An Example of Nonlinear Dynamo Action〈/a〉〈br〉 (Busse, F. H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0065.pdf"〉Energetics of the Earth's Core〈/a〉〈br〉 (Gubbins, D.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0066.pdf"〉Equation of State of Liquid Iron at the Earth's Core Conditions〈/a〉〈br〉 (Boschi, E., Mulargia, F.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0067.pdf"〉Lithospheric Slab Penetration into the Lower Mantle beneath the Sea of Okhotsk〈/a〉〈br〉 (Jordan, T. H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0069.pdf"〉〈i〉Abstracts and Short Communications〈/i〉〈/a〉〈br〉〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0068.pdf"〉Phenomenological Representation of Seismic Sources〈/a〉〈br〉 (Backus, G., Mulcahy, M.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0070.pdf"〉The Influence of the Core and the Oceans on the Chandler Wobble〈/a〉〈br〉 (Dahlen, F. A., Smith, M. L.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0071.pdf"〉The Earth's Core-Mantle Interface Revisited〈/a〉〈br〉 (Hide, R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0072.pdf"〉Seismic Observations of Structure and Physical Properties of the Subcrustal Lithosphere as Evidence for Dynamical Processes in the Upper Mantle〈/a〉〈br〉 (Fuchs, K.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0073.pdf"〉Seismic Anisotropy – a Summary〈/a〉〈br〉 (Crampin, Stuart)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0074.pdf"〉Precise Continuous Monitoring of Seismic Velocity Variations〈/a〉〈br〉 (Bungum, H., Risbo, T., Hjortenberg, E.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0075.pdf"〉On the Computation of Theoretical Seismograms for Multimode Surface Waves〈/a〉〈br〉 (Calcagnile, G., Panza, G. F., Schwab, F., Kausel, E.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0076.pdf"〉On the Excitation of the Earth's Seismic Normal Modes〈/a〉〈br〉 (Vlaar, N. J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0077.pdf"〉Seismic Velocities and Density of an Attenuating Earth〈/a〉〈br〉 (Hart, R. S., Anderson, D. L.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0078.pdf"〉A First-Motion Alternative to Geometrical Ray Theory〈/a〉〈br〉 (Chapman, C. H., Dey Sarkar, S. K.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0079.pdf"〉Heterogeneous Velocity Structure at the Base of the Mantle〈/a〉〈br〉 (Snoke, J. A., Sacks, I. S.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0080.pdf"〉Heterogeneous velocity structure at the base of the mantle〈/a〉〈br〉 (Sacks, I. S., Snoke, J. A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0081.pdf"〉Theoretical Seismograms of Core Phases Calculated by a Frequency-Dependent Full Wave Theory, and Their Interpretation〈/a〉〈br〉 (Choy, G. L.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0082.pdf"〉Amplitudes of Long-Period PcP, SKS and SKKS and the Structure at the Base of the Mantle and in the Outer Core〈/a〉〈br〉 (Müller, G., Kind, R., Mula, A., Gregersen, S.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0083.pdf"〉Relative Errors in Group Velocity Measurements〈/a〉〈br〉 (Knopoff, L.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0084.pdf"〉The Propagation of Plasma Waves in the Jovian Magnetosphere〈/a〉〈br〉 (Denskat, K. U., Neubauer, F. M.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0085.pdf"〉Statistical Theory of Electromagnetic Induction in Thin Sheets〈/a〉〈br〉 (Treumann, R., Schäfer, K.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0086.pdf"〉Precursors to P' P' and Upper Mantle Discontinuities〈/a〉〈br〉 (Husebye, E. S., Haddon, R. A. W., King, D. W.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0090.pdf"〉Mantle Heterogeneity and Mislocation Patterns for Seismic Networks〈/a〉〈br〉 (Vermeulen, J. M., Doornbos, D. J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0093.pdf"〉Correlation Between Micro-Activity and Variation of Water Level at the Schlegeis-Reservoir〈/a〉〈br〉 (Blum, R., Bock, G., Fuchs, K., Merkler, G., Widmann, R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0095.pdf"〉Attenuation Coefficients of Acoustic Normal Modes in Shallow Water〈/a〉〈br〉 (Essen, H.-H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0096.pdf"〉Relation of Gravity to Elevation in Zambia〈/a〉〈br〉 (Töpfer, K. D.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0098.pdf"〉Albert Defant (1884 - 1974) 〈/a〉〈br〉 (Krauß, W.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0099.pdf"〉Study of the Structure of the Lower Lithosphere by Explosion Seismology in the USSR〈/a〉〈br〉 (Ryaboy, V. Z.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0102.pdf"〉P-Wave Amplitudes and Sources of Scattering in 〈i〉m〈/i〉〈sub〉b〈/sub〉-Observations〈/a〉〈br〉 (Ringdal, F.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0104.pdf"〉Analyse von Mikroseismikmessungen auf Sylt〈/a〉〈br〉 (Szelwis, R., Janle, P.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0107.pdf"〉Improved Technique for Rapid Interpretation of Gravity Anomalies Caused by Two-Dimensional Sedimentary Basins〈/a〉〈br〉 (Töpfer, K. D.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0109.pdf"〉Investigation of Isostasy by Computing the Correlation Coefficients between Elevations and Bouguer Anomalies〈/a〉〈br〉 (Janle, P.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0110.pdf"〉Geoelectrical Deep Soundings in Southern Africa Using the Cabora Bassa Power Line〈/a〉〈br〉 (Blohm, E. K., Worzyk, P., Scriba, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0112.pdf"〉Spectral Characteristics of Cross-Field and Two Stream Instability as Revealed by Rocket Borne Studies〈/a〉〈br〉 (Gupta, S. P.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0113.pdf"〉〈i〉Short Communication〈/i〉 Observation of PS Reflections from the Moho〈/a〉〈br〉 (Jacob, A. W. B., Booth, D. C.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0115.pdf"〉〈i〉Book Reviews〈/i〉〈/a〉〈br〉 (Makris, J., Weigel, W.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0116.pdf"〉Planetarische Dynamos〈/a〉〈br〉 (Stix, M.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0117.pdf"〉〈i〉Original Investigations〈/i〉 A Note on the Post-Rosenbluth Quasilinear Diffusion Coefficient in the Ring Current Region〈/a〉〈br〉 (Treumann, R., Grafe, A., Lehmann, H.-R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0118.pdf"〉Remote Sensing Experiment for Magnetospheric Electric Fields Parallel to the Magnetic Field〈/a〉〈br〉 (Wilhelm, K.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0119.pdf"〉A Study of the Echzell/Wetterau Earthquake of November 4, 1975〈/a〉〈br〉 (Neugebauer, H. J., Tobias, E.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0121.pdf"〉Thermoelastic Deformations of a Half-Space – A Green's Function Approach〈/a〉〈br〉 (Müller, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0123.pdf"〉Gravity Variations with Time in Northern Iceland 1965–1975〈/a〉〈br〉 (Torge, W., Drewes, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0125.pdf"〉High Resolution Near Surface Reflection Measurements Using a Vertical Array Technique〈/a〉〈br〉 (Schepers, R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0127.pdf"〉Ausbreitung von Rayleigh-Kanalwellen in Steinkohleflözen – Modellseismische Untersuchungen〈/a〉〈br〉 (Freystätter, S., Dresen, L.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0129.pdf"〉Comment on: Hydromagnetic Waves in a Non-Uniform Plasma〈/a〉〈br〉 (Kupfer, E.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0130.pdf"〉〈i〉Book Reviews〈/i〉〈/a〉〈br〉 (Kisslinger, C., Klußmann, J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0043/LOG_0131.pdf"〉〈i〉Erratum〈/i〉 Full Wave Theory Applied to a Discontinuous Velocity Increase: The Inner Core Boundary〈/a〉〈br〉 (Cormier, V. F., Richards, P. G.)〈/a〉〈/li〉 〈/body〉 〈/html〉
    Description: Dynamo Theory
    Description: research
    Description: DFG, SUB Göttingen
    Keywords: 550 ; Africa ; Dynamo Theory ; Earthquakes ; Earth's Core ; Engineering Seismics ; Seismology ; Seismologie ; Geomagnetism ; Gravity ; Iceland ; Lithosphere ; Lithosphäre ; Magnetosphere ; Plasma Waves ; Seismic Waves ; Waves ; Wellen ; Geophysik ; Geophysics ; FID-GEO-DE-7
    Language: German , English
    Type: anthology_digi
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    Zeitschrift für Geophysik 36 / 5 (2019)
    Physika-Verlag, Würzburg
    In:  Herausgeberexemplar | 8 Z NAT 2148
    Details
    Publication Date: 2021-03-29
    Description: Dieser Band enthält Artikel zu Themengebieten der Geophysik, veröffentlicht durch die Deutsche Geophysikalische Gesellschaft in dem Jahr 1970.
    Description: 〈ul style="line-height:2;"〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0113.pdf"〉Heft 5〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0114.pdf"〉Titelseite〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0115.pdf"〉Inhaltsverzeichnis〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0116.pdf"〉[Impressum]〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0117.pdf"〉A Possible Scattering Mechanism for Lunar Seismic Waves (Berckhemer, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0119.pdf"〉On the Determination of Velocity Depth Distributions of Elastic Waves from the Dynamic Characteristics of the Reflected Wave Field (Fuchs, K.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0125.pdf"〉Auswertung seeseismischer Messungen mit einer digitalen Methode unter Anwendung der Theorie der Schallwellenausbreitung im Flachwasser (Kind, R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0128.pdf"〉On Chemical Magnetization in Some Permian Lava Flows of Southern Norway (Storetvedt, K. M., Petersen, N.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0132.pdf"〉Auswertung von Gravimeter-Messungen in der Münchberger Gneismasse längs eines Profils von Konradsreuth nach Niederlamitz (Soffel, H., Peters, K.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0133.pdf"〉Deutung der Schwereanomalien im Nördlinger Ries (Kahle, H.-G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0135.pdf"〉Eine Methode zur direkten Bestimmung der sogenannten "Geometrischen Tortuosität" (Bitterlich, W., Wöbking, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0137.pdf"〉Observations With Synchronously-Offset Beams on a 77 km path at 1.8 and 4 cm (Jeske, H., Seehars, H. D., Pucher, G., Cassebaum, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0139.pdf"〉Scattering of Seismic Waves and Lunar Seismograms (Strobach, K.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0140.pdf"〉Berechnung eines Stromsystems in der Polaren E-Region (Czechowsky, P.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0141.pdf"〉Mitteilung〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0142.pdf"〉Buchbesprechungen (Zürn, W., Seiler, E., Theile, B., Diem, Walk, )〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0143.pdf"〉[Werbung]〈/a〉〈/li〉 〈/ul〉
    Description: research
    Description: DFG, SUB Göttingen, DGG
    Keywords: 550 ; Geophysik ; Erdmagnetismus ; Geomagnetismus ; Gravitation ; Gravimetrie ; Seismik ; Seismology ; Strahlung ; Wellen ; FID-GEO-DE-7
    Language: German , English
    Type: anthology_digi
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  • 85
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    Analysis of the source parameters behaviour during the Val D'Agri test-injection (Italy) (2019)
    Details
    Publication Date: 2019-03-27
    Description: Recent advances in understanding induced earthquake mechanics are due to the new and high-quality observations from seismic signals, natural faults and laboratory experiments. The synergy of different approaches allows the acquisition of useful observations to understand the earthquake source process. In this study we investigate the source parameters behaviour of induced earthquakes recorded during daily injection tests in a wastewater disposal well in Val D’Agri (VDA, Italy). We choose this area because of its complexity and particularity. VDA is a Quaternary extensional basin located in the Southern Apennines characterized by a complex tectonic evolution, high seismic hazard and significant hydrocarbon exploitation. The basin hosts the largest onshore oilfield in Europe that produces oil and associated gas from low- porosity, fractured Cretaceous limestone. Wastewater associated to hydrocarbon production is reinjected into the Costa Molina 2 high-rate well (CM2) into an unproductive marginal portion of the carbonate reservoir at 2890-3096 m depth (b.s.l.). Initial injection tests were performed from 2 to 12 June 2006 with variable duration (from 4 to 32 hr) and hourly injection rate of 38 m3/hr. During the tests a maximum well-head pressure of 101 bar was measured. These tests induced a swarm microseismicity (69 events, ML comprised by 0.3 and 1.8) recorded by a high-performance local network run by INGV (Mc 0.4, 23 stations) that constitutes our testing data-set. We investigate the full moment tensors decomposing them in Double-Couple (DC), Isotropic (ISO) and Compensated Linear Vector Dipole (CLVD) components by using HybridMT technique. We obtain significant contribution of %ISO and %CLVD components that tend to increase with time. Also, we compute the moment magnitudes (that we compare with ML) and the static stress drops (by spectral analysis). Finally, we discuss each analysed source parameter as a function of the injection pressure curve in the geological/tectonic contest.
    Description: Published
    Description: Malta
    Description: 3T. Sorgente sismica
    Keywords: Seismology ; Source Analysis ; Solid Hearth
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Poster session
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  • 86
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    AlpArray in Hungary: temporary and permanent seismological networks in the transition zone between the Eastern Alps and the Pannonian basin (2019)
    Details
    Publication Date: 2019-03-07
    Description: In the last few decades dense large-scale seismic networks showed their importance in studying the structure of the lithosphere and the upper mantle. The better understanding of the Apennines–Alps–Carpathian–Dinarides system is the main target of the AlpArray European international initiative in which more than 50 institutes are involved. The core of AlpArray is the AlpArray Seismic Network (AASN). With its 􏰖 600 broadband seismic stations ( 􏰖 280 of which are temporary) the AASN is, so far, the largest passive seismic experiment in Europe. The MTA CSFK Geodetic and Geophysical Insti- tute, as a Core Member of the AlpArray project, contributes to the AlpArray Seismic Network with its entire permanent network as well as with 11 temporary broadband seismic stations deployed in Western Hungary. Three additional station equipment were provided by the Swiss-AlpArray SINERGIA program. The average station distance together with the permanent stations is around 40 km in the area of interest. The temporary network has been installed between December 2015 and July 2016 and the planned operation period is 3 years. In this paper we describe the characteristics of the 29 per- manent and temporary stations, introducing not only the equipment, but the location, housing and geological setting, as well. We present median power spectral density curves in order to characterise the noise conditions at each station.
    Description: Hungarian Academy of Sciences (Grants EU-04/2014, EU-07/2015); Swiss-AlpArray SINERGIA Project CRSII2_154434/1 by the Swiss National Science Foundation (SNSF)
    Description: Published
    Description: 221–245
    Description: 1IT. Reti di monitoraggio
    Description: 5IT. Osservatori
    Description: JCR Journal
    Keywords: AlpArray ; Temporary seismic network ; Seismic noise ; Hungarian National Seismological Network ; Pannonian basin ; Solid Earth ; Seismology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 87
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    Journal of Geophysics - Zeitschrift für Geophysik 59 (2019)
    Springer, Berlin
    In:  SUB Göttingen | 8 Z NAT 2148
    Details
    Publication Date: 2021-03-29
    Description: Dieser Band enthält 32 Artikel zu Themengebieten der Geophysik, veröffentlicht durch die Deutsche Geophysikalische Gesellschaft in dem Jahr 1983.
    Description: Inhaltsverzeichnis: Journal of Geophysics 59 〈html〉 〈body〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0011.pdf"〉The detailed velocity structure of the Urach geothermal anomaly〈/a〉〈br〉 (Walther, C., Trappe, H., Meissner, R.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0012.pdf"〉The effect of 〈i〉SKS〈/i〉 scattering on models of the shear velocity-structure of the D" region〈/a〉〈br〉 (Lay, T., Young, C.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0013.pdf"〉Spheroidal and torsional global response functions〈/a〉〈br〉 (Wilhelm, H.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0014.pdf"〉Magnetometer array studies on southeastern Finland on the Baltic shield〈/a〉〈br〉 (Pajunpää, K.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0016.pdf"〉Magnetovariational and magnetotelluric studies of the Oulu anomaly on the Baltic Shield in Finland〈/a〉〈br〉 (Korja, T., Zhang, P., Pajunpää, K.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0018.pdf"〉Glacio-isostatic adjustment in Fennoscandia revisited〈/a〉〈br〉 (Wolf, D.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0019.pdf"〉Modelling active audio-magnetotelluric data〈/a〉〈br〉 (Fischer, G., Schnegg, P.-A.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0020.pdf"〉A comparison of upper mantle subcontinental electrical conductivity for North America, Europe, and Asia〈/a〉〈br〉 (Campbell, W. H., Schiffmacher, E. R.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0021.pdf"〉Paleomagnetism of the tertiary intrusives from Chalkidiki (northern Greece)〈/a〉〈br〉 (Kondopoulou, D., Westphal, M.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0022.pdf"〉Absolute intensity of daytime whistlers at low and middle latitudes and its latitudinal variation〈/a〉〈br〉 (Hayakawa, M., Tanaka, Y., Ohta, K., Okada, T.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0023.pdf"〉Electric fields and currents at the Harang discontinuity: a case study〈/a〉〈br〉 (Kunkel, T., Baumjohann, W., Untiedt, J., Greenwald, R. A.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0024.pdf"〉〈i〉Erratum.〈/i〉 In-situ permeability from non-dilatational soil deformation caused by groundwater pumping – a case study〈/a〉〈br〉 (Kümpel, H.-J., Lohr, G.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0025.pdf"〉Book reviews〈/a〉〈br〉 (Jentzsch, G., Jacoby, W.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0026.pdf"〉A conceptual model of core dynamics and the earth's magnetic field〈/a〉〈br〉 (Officer, C. B.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0027.pdf"〉Paleomagnetism of Miocene volcanism from South Syria〈/a〉〈br〉 (Roperch, P., Bonhommet, N.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0028.pdf"〉Periadriatic lineament in the Alps studied by magnetotellurics〈/a〉〈br〉 (Ádám, A., Duma, G., Gutdeutsch, R., Verő, J., Wallner, Á.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0031.pdf"〉Comparison of fault-plane solutions and moment tensors〈/a〉〈br〉 (Hinzen, K.-G.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0032.pdf"〉A teleseismic study of the Upper Rhinegraben area: array mislocation diagram and 3-D velocity inversion〈/a〉〈br〉 (Granet, M.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0033.pdf"〉Interactive high-resolution polarization analysis of broad-band seismograms〈/a〉〈br〉 (Plešinger, A., Hellweg, M., Seidl, D.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0035.pdf"〉The relationship between the polarization of whistlers and their dispersion〈/a〉〈br〉 (Shimakura, S., Okada, T., Hayakawa, M., Tanaka, Y.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0036.pdf"〉A simple statistical model on the degree of interconnection on partially molten rocks〈/a〉〈br〉 (Schmeling, H.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0037.pdf"〉Book reviews〈/a〉〈br〉 (Hansen, C. J., Jentzsch, G.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0038.pdf"〉Complete seismogram synthesis for transversely isotropic media〈/a〉〈br〉 (Mandal, B., Mitchell, B. J.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0039.pdf"〉The influence of a dilatant region in the Earth's crust on the Earth tide tilt and strain〈/a〉〈br〉 (Kirsch, R., Zschau, J.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0040.pdf"〉The influence at atmospheric loading on VLBI-experiments〈/a〉〈br〉 (Rabbel, W., Schuh, H.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0041.pdf"〉Discrete frequency inequalities for magnetotelluric impedances of one-dimensional conductors〈/a〉〈br〉 (Weidelt, P.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0042.pdf"〉Thermally stimulated currents in rocks〈/a〉〈br〉 (Dologlou-Revelioti, E., Varotsos, P.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0043.pdf"〉Magnetostratigraphy of Neogene equatorial Pacific pelagic sediments〈/a〉〈br〉 (Weinreich, N., Theyer, F.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0045.pdf"〉Deconvolution as a method for the separation of Pi2 pulsations from background field variations〈/a〉〈br〉 (Behrens, J., Glaßmeier, K.-H.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0046.pdf"〉〈i〉Laudatio〈/i〉. Presentation of the Emil Wiechert Medal to Don L. Anderson, Pasadena〈/a〉〈br〉 (Soffel, H.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0047.pdf"〉〈i〉Correction〈/i〉. A comparison of upper mantle subcontinental electrical conductivity for North America, Europe and Asia〈/a〉〈br〉 (Campbell, W. H., Schiffmacher, E. R.)〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0059/LOG_0048.pdf"〉Book reviews〈/a〉〈br〉 (Kertz, W., Schwentek, H., Jacoby, W. R.)〈/li〉 〈/body〉 〈/html〉
    Description: research
    Description: DGG, DFG, SUB Göttingen
    Keywords: 550 ; Geophysik ; Alps ; Broad-band seismology ; Deconvolution ; Deep Sea Drilling Project ; Deformation of earth’s surface ; Dilatancy ; Dynamo theory ; Earth currents ; Earth tides ; Earth’s core ; Earth’s crust ; Earth’s Mantle ; Electrical Conductivity of the Earth ; Electromagnetic Induction ; Fault plane solutions ; Free oscillations of earth ; Geomagnetic pulsations ; Geothermics ; Germany ; Global positioning ; Gräfenberg seismic array ; Greece ; Harang discontinuity ; Inverse problems ; lonospheric electric field ; lsostasy ; Magnetic field of earth ; Magnetometer array studies ; Magnetosphere ; Magnetostratigraphy ; Magnetotellurics ; Pacific ; Paleomagnetism ; Partial melts ; Polar ionosphere ; Polar magnetic substorms ; Rhinegraben ; Rock Physics ; Scandinavia ; Seismics ; Seismic Moment tensor ; Seismic wave propagation ; Seismology ; Synthetic seismograms ; Syria ; Very Long Baseline Interferometry ; Viscosity of earth’s mantle ; Whistlers ; FID-GEO-DE-7
    Language: English
    Type: anthology_digi
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  • 88
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    Zeitschrift für Geophysik 36 / 4 (2019)
    Physika-Verlag, Würzburg
    In:  Herausgeberexemplar | 8 Z NAT 2148
    Details
    Publication Date: 2021-03-29
    Description: Dieser Band enthält Artikel zu Themengebieten des Erdmagnetismus und der Ionosphäre, veröffentlicht durch die Deutsche Geophysikalische Gesellschaft in dem Jahr 1970.
    Description: 〈ul style="line-height:2;"〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0088.pdf"〉Heft 4〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0089.pdf"〉Titelseite〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0090.pdf"〉Inhaltsverzeichnis〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0091.pdf"〉[Impressum]〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0092.pdf"〉Geophysics and Germany, Men and Enterprises (Chapman, S.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0093.pdf"〉Investigation of the Auroral Electrojet (Heinrich, H., Reimer, D., Siemann, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0095.pdf"〉Plasmamessungen im Polarlicht-Elektrojet und daraus erschlossene elektrische Felder (Kist, R., Spenner, K.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0097.pdf"〉Polarisationsmessungen an künstlichen Bariumwolken (Möller, G. F., Haser, L.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0098.pdf"〉Der Forschungssatellit AZUR (Keppler, E.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0101.pdf"〉Crustal Structure of the Western United States from Seismic-Refraction Measurements in Comparison with Central European Results (Prodehl, C.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0105.pdf"〉MARS 66. Eine Magnetbandapparatur für seismische Tiefensondierung (Berckheimer, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0109.pdf"〉Recordings with Askania Gravimeters Before and After Important Earthquakes (Kizawa, T.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0111.pdf"〉Ergänzung zu "In memoriam Otto Lucke" (Heft 6/1969, S. 6-8) (Fanselau, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN101433392X_0036/LOG_0112.pdf"〉[Werbung]〈/a〉〈/li〉 〈/ul〉
    Description: research
    Description: DFG, SUB Göttingen, DGG
    Keywords: 550 ; Geophysik ; Erdmagnetismus ; Geomagnetismus ; Geophysik ; Ionosphäre ; Ionosphere ; Seismik ; Seismology ; Strahlung ; Wellen ; FID-GEO-DE-7
    Language: German , English
    Type: anthology_digi
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  • 89
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    Journal of Geophysics - Zeitschrift für Geophysik 40 (2019)
    Springer, Berlin
    In:  SUB Göttingen | 8 Z NAT 2148:40
    Details
    Publication Date: 2021-03-29
    Description: Dieser Band enthält 134 Artikel zu Themengebieten der Seismologie, Erdmagnetismus und Gesteinsphysik veröffentlicht durch die Deutsche Geophysikalische Gesellschaft in dem Jahr 1974.
    Description: Inhaltsverzeichnis: Journal of Geophysics 40 〈html〉 〈body〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0010.pdf"〉Seegravimetrie〈/a〉〈br〉 (Fleischer, U.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0014.pdf"〉Statistical analysis of the pitch angle distribution of magnetospheric solar protons during geomagnetic activity〈/a〉〈br〉 (Scholer, M., Morfill, G., Hovestadt, D.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0016.pdf"〉Viscosity-depth-structure of different tectonic units and possible consequences for the upper part of converging plates〈/a〉〈br〉 (Meissner, R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0017.pdf"〉Die Magnetisierung von Bohrkernen aus einem Serpentinit-Vorkommen bei Erbendorf (Oberpfalz) (Schult, A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0018.pdf"〉Estimates of in situ thermal diffusivity of the Ore-Bearing Rocks in some drillholes in the Skellefte Field (N. Sweden) using the annual temperature wave〈/a〉〈br〉 (Parasnis, D. S.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0019.pdf"〉Geophysical exploration for groundwater in the Lusaka District, Republic of Zambia〈/a〉〈br〉 (Töpfer, K.D., Legg, C. A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0021.pdf"〉Neuere Versuche zum Dipol-Induktionsverfahren〈/a〉〈br〉 (Leppin, M.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0022.pdf"〉A field evaluation of Caner's broad-band geomagnetic induction instrumentation〈/a〉〈br〉 (Dragert, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0025.pdf"〉Seismic noise at 2 Hz in Europe〈/a〉〈br〉 (Plešinger, A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0026.pdf"〉Crustal structure under the Ionian Sea〈/a〉〈br〉 (Weigel, W.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0028.pdf"〉Heat-Flow Measurements in Swiss Lakes〈/a〉〈br〉 (Von Herzen, R. P.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0029.pdf"〉Makroseismische Abschätzungen von Herdparametern österreichischer Erdbeben aus den Jahren 1905 - 1973〈/a〉〈br〉 (Franke, A., Gutdeutsch, R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0030.pdf"〉Long range propagation of seismic energy in the lower lithosphere〈/a〉〈br〉 (Kind, R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0033.pdf"〉Palaeomagnetism of tertiary volcanic rocks from the Ethiopian southern plateau and the Danakil Block〈/a〉〈br〉 (Schult, A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0034.pdf"〉Calculation of the shape and position of the last closed field line boundary and the coordinates of the magnetopause neutral points in a theoretical magnetospheric field model〈/a〉〈br〉 (Voigt, G.-H.))〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0037.pdf"〉Doppler shift of auroral backscatter signals〈/a〉〈br〉 (Czechowsky, P.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0038.pdf"〉Spherical harmonic analysis of the DS-field during magnetic storms〈/a〉〈br〉 (Schreiber, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0041.pdf"〉Note on determining hourly mean values〈/a〉〈br〉 (Larsen, J. C.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0042.pdf"〉Seismic observations in Germany of a 10 t explosion off Scotland〈/a〉〈br〉 (Bonjer, K.-P., Kaminski, W., Kind, R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0044.pdf"〉A method to reduce the measuring time for spinner magnetometers〈/a〉〈br〉 (Hummervoll, R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0045.pdf"〉Book Reviews〈/a〉〈br〉 (Mayer, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0046.pdf"〉Transverse plasma waves in the solar wind close to the proton gyrofrequency〈/a〉〈br〉 (Rehn, H. W.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0047.pdf"〉Die magnetische Anomalie der Ivreazone〈/a〉〈br〉 (Albert, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0052.pdf"〉Second meeting of the European Geophysical Society〈/a〉〈br〉〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0053.pdf"〉On a high-frequency method for the measurement of susceptibilities and hysteresis losses of rocks and minerals between nitrogen temperature and 700 °C〈/a〉〈br〉 (Markert, H., Trissl, K.-H., Zimmermann, G. J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0054.pdf"〉Kinetics of oxidation processes in titanomagnetites〈/a〉〈br〉 (Kropáček, V.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0056.pdf"〉Ultra sound absorption measurements in rock samples at low temperatures〈/a〉〈br〉 (Herminghaus, Ch., Berckhemer, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0058.pdf"〉Recordings with the Askania borehole tiltmeter (vertical pendulum) in the frequency range of earth's free oscillations〈/a〉〈br〉 (Flach, D., Große-Brauckmann, W.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0060.pdf"〉Heat flow measurements in northern Italy and heat flow maps of Europe〈/a〉〈br〉 (Haenel, R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0062.pdf"〉Die Bestimmung der Transmissivität von Grundwasserleitern aus dem Einschwingverhalten des Brunnen-Grundwasserleitersystems〈/a〉〈br〉 (Krauss, I.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0063.pdf"〉Symposium on "Geomagnetic Anomalies, Rock Magnetism and Petrography"〈/a〉〈br〉 (Hahn, A., Hall, D. H., Dunlop, D. J., Kobayashi, Kazuo, Nomura, Masafumi, Lidiak, E. G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0090.pdf"〉The AEROS mission〈/a〉〈br〉 (Lämmerzahl, P., Bauer, S. J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0091.pdf"〉The AEROS-EUV Spectrometer〈/a〉〈br〉 (Schmidtke, G., Schweizer, W., Knothe, M.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0092.pdf"〉The retarding potential analyzer on AEROS-B〈/a〉〈br〉 (Spenner, K., Dumbs, A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0094.pdf"〉Impedance probe. The AEROS-B electron density experiment〈/a〉〈br〉 (Neske, E., Kist, R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0095.pdf"〉The AEROS neutral and ion mass-spectrometer〈/a〉〈br〉 (Krankowsky, D., Lämmerzahl, P., Bonner, F., Wieder, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0096.pdf"〉The neural atmosphere temperature experiment〈/a〉〈br〉 (Spencer, N. W., Pelz, D. T., Niemann, H. B.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0097.pdf"〉Atmospheric drag analysis with the AEROS Satellite〈/a〉〈br〉 (Roemer, Max, Wulf-Mathies, Carsten)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0098.pdf"〉Electromagnetic reflections in salt deposits〈/a〉〈br〉 (Thierbach, R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0100.pdf"〉The structure of the Ries crater from geoelectric depth soundings〈/a〉〈br〉 (Ernstson, K.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0102.pdf"〉Measurements of magnetic total field anomalies in the Hon Graben, Libya〈/a〉〈br〉 (Schult, A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0103.pdf"〉Correction〈/a〉〈br〉〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0104.pdf"〉Book reviews〈/a〉〈br〉 (Theile, B.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0105.pdf"〉Interplanetary magnetic fields and the propagation of cosmic rays〈/a〉〈br〉 (Wibberenz, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0106.pdf"〉Intensity and energy spectrum of electrons accelerated in the earth's bow shock〈/a〉〈br〉 (Anderson, K. A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0107.pdf"〉Evidence from particle precipitation of two-way-convection in auroral latitudes〈/a〉〈br〉 (Hultqvist, B.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0110.pdf"〉Investigation of electron dynamics in the magnetosphere with electron beams injected from sounding rockets〈/a〉〈br〉 (Winckler, J. R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0113.pdf"〉Cosmic ray electrons in the atmosphere〈/a〉〈br〉 (Fulks, G., Meyer, P.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0114.pdf"〉Cosmic rays underground and the interplanetary magnetic field〈/a〉〈br〉 (Regener, Victor H., Regener, Eric)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0115.pdf"〉Harmonic temperature waves in a horizontally layered medium〈/a〉〈br〉 (Mundry, E.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0118.pdf"〉No transform faults on the moon〈/a〉〈br〉 (Stegena, L., Bérczi, Sz.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0121.pdf"〉Dominating trends of the anomalies of the gravity and magnetic fields in NE France and SW Germany〈/a〉〈br〉 (Edel, J. B.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0040/LOG_0122.pdf"〉Book Reviews〈/a〉〈br〉 (Strobach, K., Petersen, Nikolai)〈/a〉〈/li〉 〈/body〉 〈/html〉
    Description: research
    Description: DGG, DFG, SUB Göttingen
    Keywords: 550 ; Aeronomy ; AEROS (satellite) ; Africa ; Alps ; Applied Geophysics ; Aurora ; Austria ; Bow Shock of Earth ; Canada ; Cosmic Rays ; Crustal Structure ; Earthquakes ; Europe ; France ; Free Oscillation of Earth ; Geoelectrics ; Geomagnetic Anomalies ; Geomagnetic Deep Sounding ; Geomagnetic Secular Variation ; Geomagnetic Time Variations ; Gravity Anomalies ; Gravity ; Geothermics ; Germany ; Great Britain ; Heat Flow ; Hydrology ; Interplanetary Magnetic Field ; Ionian Sea ; Ionosphere ; Italy ; Lunar Seismology ; Lunar Tectonism ; Macquarie-Inseln ; Magnetosphere ; Mantle of Earth ; Marine Geophysics ; Pacific Ocean ; Paleomagnetism ; Particle Acceleration ; Plasma Waves ; Radio Waves ; Ries Crater ; Rock Magnetism ; Rock Physics ; Salt Deposits ; Seismic Deep Sounding ; Seismic Noise ; Seismic Refraction Measurements ; Seismic Wave Absorption ; Seismology ; Solar EUV Radiation ; Solar Wind ; Switzerland ; Tectonophysics ; Tiltmeter ; United States ; USSR ; Viscosity of Earth ; FID-GEO-DE-7
    Language: German , English
    Type: anthology_digi
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    CITATION GEO-LEO
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    Journal of Geophysics - Zeitschrift für Geophysik 51 (2019)
    Springer, Berlin
    In:  SUB Göttingen | 8 Z NAT 2148:51
    Details
    Publication Date: 2021-03-29
    Description: Dieser Band enthält 29 Artikel zu Themengebieten der Geophysik, insbesondere zu Aspekten des Erdmagnetismus und der Seismik, veröffentlicht durch die Deutsche Geophysikalische Gesellschaft in dem Jahr 1982.
    Description: Inhaltsverzeichnis: Journal of Geophysics 51 〈html〉 〈body〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0011.pdf"〉〈sup〉40〈/sup)Ar–〈sup〉39〈/sup〉Ar Ages of Rocks and Glasses from the Nördlinger Ries Crater and the Temperature History of Impact Breccias〈/a〉〈br〉 (Staudacher, T., Jessberger, E. K., Dominik, B., Kirsten, T., Schaeffer, O. A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0012.pdf"〉Tectonic Inferences of Paleomagnetic Data from Some Mesozoic Formations in Central Iran〈/a〉〈br〉 (Wensink, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0013.pdf"〉Palaeomagnetic Results from Lower Paleozoic Diabases and Pillow Lavas from the Frankenwald Area (Northwestern Edge of the Bohemian Massif) 〈/a〉〈br〉 (Kim, In-Soo, Soffel, H. C.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0014.pdf"〉Palaeomagnetism of Quaternary Volcanics of the East-Eifel, Germany〈/a〉〈br〉 (Böhnel, H., Kohnen, H., Negendank, J., Schmincke, H.-U.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0016.pdf"〉The Effect of Young Oceanic Regions on Frequencies and Damping of free Oscillations of the Earth〈/a〉〈br〉 (Roult, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0017.pdf"〉Altitude Characteristics of Radar Aurora as Seen by a 90-MHz Double-Altitude Radar System Operated at Karmaselga, Karelia〈/a〉〈br〉 (Timofeev, E., Miroshnikov, Y.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0018.pdf"〉Observations of Ionospheric and Field-Aligned Currents in the Late Afternoon Sector with Triad and the Scandinavian Magnetometer Array〈/a〉〈br〉 (Sulzbacher, H., Baumjohann, W., Potemra, T. A., Nielsen, E., Gustafsson, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0019.pdf"〉Adiabatic Invariant of the Non-Relativistic Particles in the Field of a Shock Wave〈/a〉〈br〉 (Chirkov, A. G., Khodjaev, S. D., Shatalov, S. D., Vasiliyev, V. N.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0020.pdf"〉Comparative Interpretation of Explosion Seismic Data〈/a〉〈br〉 (Ansorge, J., Prodehl, C., Bamford, D.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0022.pdf"〉The Intercept-Time Method – Possibilities and Limitations〈/a〉〈br〉 (Pavlenkova, N. I.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0025.pdf"〉Linearized Solutions of Kinematic Problems of Seismic Body Waves in Inhomogeneous Slightly Anisotropic Media〈/a〉〈br〉 (Červený, V., Jech, J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0026.pdf"〉Source Parameters of Mine Tremors in the Eastern Part of the Ruhr-District (West-Germany) 〈/a〉〈br〉 (Hinzen, K.-G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0027.pdf"〉Ferromagnetic Resonance 〈I〉g〈/i〉-Factor Measurement on LUNA 20 Soil〈/a〉〈br〉 (Frait, Z., Cimbálníková, A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0028.pdf"〉Observation of Guided ULF-Waves Correlated with Auroral Particle Precipitation Theoretically Explained by Negative Landau Damping〈/a〉〈br〉 (Klöcker, N.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0029.pdf"〉Ground – Satellite Correlative Study of a Giant Pulsation Event〈/a〉〈br〉 (Hillebrand, O., Münch, J., McPherron, R. L.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0030.pdf"〉Average Diurnal Variations of the Intensity of Geomagnetic Pulsations in the Period Ranges of pc 2–pc 5 Observed at Fürstenfeldbruck During the Years 1960–1971〈/a〉〈br〉 (Korschunow, A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0031.pdf"〉Dispersion Effect in Earth Tide Parameters? 〈/a〉〈br〉 (Wilhelm, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0032.pdf"〉Comments on “Palaeomagnetism of Upper Cretaceous Volcanics and Nubian Sandstones of Wadi Natash, SE Egypt and Implications for the Polar Wander Path for Africa in the Mesozoic”〈/a〉〈br〉 (Schult, A., Hussain, A. G., Soffel, H. C.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0033.pdf"〉Book Reviews〈/a〉〈br〉 (Buntebarth, G., Stegena, L.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0034.pdf"〉Amplitude study of the 〈i〉Pg〈/i〉 Phase〈/a〉〈br〉 (Banda, E., Deichmann, N., Braile, L. W., Ansorge, J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0035.pdf"〉Analysis of Broad-Band Rayleigh Waves: A Possibility for Seismic Discrimination〈/a〉〈br〉 (Hanka, W.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0038.pdf"〉Shear Fracture Development and Seismic Regime in Pyrophyllite Specimens with Soft Inclusions〈/a〉〈br〉 (Sobolev, G., Rummel, F.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0039.pdf"〉The Shape of the Geomagnetic Field Through the Last 8,500 Years Over Part of the Northern Hemisphere〈/a〉〈br〉 (Creer, K. M., Tucholka, P.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0040.pdf"〉The Induced Effects of Geomagnetic Variations in the Equatorial Region〈/a〉〈br〉 (Carlo, L., Singh, B. P., Rastogi, R. G., Agrarwal, A. K.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0041.pdf"〉Parameter Trade-Off in One-Dimensional Magnetotelluric Modelling〈/a〉〈br〉 (Fischer, G., Le Quang, B. V.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0042.pdf"〉A Theory of Forced Magnetohydrodynamic Waves〈/a〉〈br〉 (Krummheuer, F.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0043.pdf"〉Pi2 Magnetic Pulsations, Auroral Break-ups, and the Substorm Current Wedge: A Case Study〈/a〉〈br〉 (Pashin, A. B., Glaßmeier, K. H., Baumjohann, W., Raspopov, O. M., Yahnin, A. G., Opgenoorth, H. J., Pellinen, R. J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0045.pdf"〉In Memoriam Haakon Brækken 14 April 1902 – 2 Juli 1982〈/a〉〈br〉 (Saxov, S.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0051/LOG_0046.pdf"〉Book Reviews〈/a〉〈br〉 (Jacoby, W. R., Jentzsch, G., Spohn, T., Engelhard, L., Christensen, U.)〈/a〉〈/li〉 〈/body〉 〈/html〉
    Description: research
    Description: DFG, SUB Göttingen
    Keywords: 550 ; Aurora ; Geomagnetic Pulsations ; Paleomagnetism ; Paläomagnetismus ; Satellites ; Seismologie ; Seismology ; FID-GEO-DE-7
    Language: English
    Type: anthology_digi
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    CITATION GEO-LEO
  • 91
    facet.materialart.
    Unknown
    Journal of Geophysics - Zeitschrift für Geophysik 52 (2019)
    Springer, Berlin
    In:  SUB Göttingen | 8 Z NAT 2148:52
    Details
    Publication Date: 2021-03-29
    Description: Dieser Band enthält 33 Artikel zu Themengebieten der Geophysik, inklusive der Beiträge zu einem Symposium über "Plasma und Teilchen in der Magnetosphäre", veröffentlicht durch die Deutsche Geophysikalische Gesellschaft in dem Jahr 1983.
    Description: Inhaltsverzeichnis: Journal of Geophysics 52 〈html〉 〈body〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0011.pdf"〉On Systematic Errors in Phase-Velocity Analysis〈/a〉〈br〉 (Wielandt, E., Schenk, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0012.pdf"〉The Upper Mantle Structure Under South-East Europe Derived from GRF Broadband Records of Greek Earthquakes〈/a〉〈br〉 (Rademacher, H, Odom, R. I., Kind, R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0013.pdf"〉Seismic Velocities of Granulites from the Seiland Petrographic Province, N. Norway: Implications for Scandinavian Lower Continental Crust〈/a〉〈br〉 (Chroston, P. N., Evans, C. J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0014.pdf"〉Inductive Coupling Between Idealized Conductors and Its Significance for the Geomagnetic Coast Effect〈/a〉〈br〉 (Wolf, D.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0015.pdf"〉VHF Radar Observations of Wind Velocities at the Arecibo Observatory〈/a〉〈br〉 (Röttger, J., Czechowsky, P., Rüster, R., Schmidt, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0016.pdf"〉Spatial Variations of Ionospheric Conductivity and Radar Auroral Amplitude in the Eastward Electrojet Region During Pre-Substorm Conditions〈/a〉〈br〉 (Uspensky, M. V., Pellinen, R. J., Baumjohann, W., Starkov, G. V., Nielsen, E., Sofko, G., Kaila, K. U.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0019.pdf"〉On the Dependence of Radar Aurora Amplitude on Ionospheric Electron Density〈/a〉〈br〉 (Starkov, G. V., Oksman, J., Uspensky, M. V., Kustov, A. V.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0020.pdf"〉A Possibility to Distinguish Between Ionospheric and Magnetospheric Origin of Low Latitude Magnetic Perturbations〈/a〉〈br〉 (Papamastorakis, I., Haerendel, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0021.pdf"〉An Analogue Model of the Geomagnetic Induction in the South Indian Ocean〈/a〉〈br〉 (Papamastorakis, I., Haerendel, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0022.pdf"〉Book Review〈/a〉〈br〉 (Klever, N.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0023.pdf"〉Investigations of the Internal Geomagnetic Field by Means of a Global Model of the Earth's Crust〈/a〉〈br〉 (Meyer, J., Hufen, J.-H., Sichert, M., Hahn, A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0025.pdf"〉A Palaeointensity Method for Use with Highly Oxidised Basalts, and Application to Some Permian Volcanics〈/a〉〈br〉 (Senanayake, W. E., McElhinny, M. W.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0027.pdf"〉Comparison of Errors in Local and Reference Estimates of the Magnetotelluric Impedance Tensor〈/a〉〈br〉 (Kröger, P., Micheel, H. J., Elsner, R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0028.pdf"〉Discrete Chorus Emissions Recorded at Nainital〈/a〉〈br〉 (Khosa, P. N., Lalmani, Ahmad, M. M.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0029.pdf"〉Evidence for Lamination in the Lower Continental Crust Beneath the Black Forest〈/a〉〈br〉 (Southwestern Germany) (Deichmann, N., Ansorge, J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0030.pdf"〉FENNOLORA Recordings at NORSAR〈/a〉〈br〉 (Mereu, R. F., Mykkeltveit, S., Husebye, E. S.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0032.pdf"〉Earth's Flattening Effect on the Tidal Forcing Field〈/a〉〈br〉 (Wilhelm, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0033.pdf"〉Some Results of Calibration Factor Determination of LaCoste and Romberg Gravity Meters (Model D) 〈/a〉〈br〉 (Götze, H.-J., Meurers, B.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0034.pdf"〉Ocean Tides and Periodic Variations of the Earth's Rotation〈/a〉〈br〉 (Baader, H.-R., Brosche, P., Hövel, W.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0035.pdf"〉In Memoriam Anton Graf (1901–1981) 〈/a〉〈br〉 (Rosenbach, O., Gauthier, W.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0036.pdf"〉In Memoriam Jürgen Henning Illies March 14, 1924 – August 2, 1982〈/a〉〈br〉 (Fuchs, K.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0037.pdf"〉Book Reviews〈/a〉〈br〉 (Spohn, T., Jacoby, W. R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0038.pdf"〉Preface to the special issue “Plasma and Energetic Particles in the Magnetosphere”, EGS Meeting, 23-27 Auguts 1982, Leeds, UK〈/a〉〈br〉 (Hovestadt, D., Untiedt, J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0039.pdf"〉Global Pattern of Auroral Ion Precipitation: A Review of the Results from the AUREOLE-1 and AUREOLE-2 Satellites〈/a〉〈br〉 (Crasnier, J., Sauvaud, J. A., Cambou, F., Gladyshev, V. A., Kovrazhkin, R. A., Galperin, Yu. I.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0040.pdf"〉A Technique for Studying Density Gradients and Motions of Plasmaspheric Irregularities〈/a〉〈br〉 (Jones, D.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0041.pdf"〉Heavy Ion Plasmas in the Outer Magnetosphere〈/a〉〈br〉 (Young, D. T.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0042.pdf"〉Energetic Particle Signatures Near Magnetospheric Boundaries〈/a〉〈br〉 (Scholer, M.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0043.pdf"〉Recent ISEE Observations of the Magnetopause and Low Latitude Boundary Layer: A Review〈/a〉〈br〉 (Saunders, M. A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0044.pdf"〉Motion of Flux Transfer Events on 10 November 1977 Determined by Energetic Particles on ISEE 2〈/a〉〈br〉 (Daly, P. W., Keppler, E.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0045.pdf"〉On the Dynamics of the Ring Current〈/a〉〈br〉 (Hultqvist, B.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0046.pdf"〉Ionic Composition of the Earth's Radiation Belts〈/a〉〈br〉 (Spjeldvik, W. N.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0047.pdf"〉Energy and Charge Distribution of Energetic Helium Ions in the Outer Radiation Belt of the Earth〈/a〉〈br〉 (Klecker, B., Hovestadt, D., Scholer, M., Gloeckler, G., Ipavich, F. M., Fan, C. Y.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0052/LOG_0049.pdf"〉High Energy Electrons at Altitudes 500 km Near the Equator〈/a〉〈br〉 (Just, L., Kudela, K., Gusev, A. A., Pugacheva, G. I.)〈/a〉〈/li〉 〈/body〉 〈/html〉
    Description: research
    Description: DFG, SUB Göttingen
    Keywords: 550 ; Aurora ; Black Forest ; Earth's Crust ; Geomagnetism ; India ; Magnetosphere ; Seismics ; Seismology ; FID-GEO-DE-7
    Language: English
    Type: anthology_digi
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    CITATION GEO-LEO
  • 92
    facet.materialart.
    Unknown
    Journal of Geophysics - Zeitschrift für Geophysik 56 (2019)
    Springer, Berlin
    In:  SUB Göttingen | 8 Z NAT 2148:56
    Details
    Publication Date: 2021-03-29
    Description: Dieser Band enthält 26 Artikel zu Themengebieten der Geophysik, veröffentlicht durch die Deutsche Geophysikalische Gesellschaft in dem Jahr 1985.
    Description: Inhaltsverzeichnis: Journal of Geophysics 56 〈html〉 〈body〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0010.pdf"〉Archaeomagnetic Study of Medieval Fireplaces at Mannheim-Wallstadt and Ovens from Herrenchiemsee (Southern Germany) and the Problem of Magnetic Refraction〈/a〉〈br〉 (Schurr, K., Becker, H., Soffel, H.C.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0012.pdf"〉Frequency Dependence of 〈i〉Q〈/i〉 for Seismic Body Waves in the Earth's Mantle〈/a〉〈br〉 (Ulug, A., Berckhemer, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0013.pdf"〉The Polarization of S Waves in a Heterogeneous Isotropic Earth Model〈/a〉〈br〉 (Cormier, V. F.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0014.pdf"〉The Relaxation of Spherical and Flat Maxwell Earth Models and Effects Due to the Presence of the Lithosphere〈/a〉〈br〉 (Wolf, D.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0015.pdf"〉Plasma-Gas Interactions in Planetary Atmospheres and Their Relevance for the Terrestrial Hydrogen Budget〈/a〉〈br〉 (Nass, H. U., Fahr, H. J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0016.pdf"〉Increased Ionospheric Absorption Connected With Pc 1 Pulsations after Geomagnetic Storms〈/a〉〈br〉 (Märcz, F.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0017.pdf"〉Some Aspects of Whistler Duct Lifetimes at Low Latitudes〈/a〉〈br〉 (Lalmani)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0018.pdf"〉On a Mixed Quadratic Invariant of the Magnetic Susceptibility Tensor〈/a〉〈br〉 (Jelinek, V.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0019.pdf"〉In Memoriam Hans Closs (1907 – 1982) 〈/a〉〈br〉 (Dürbaum, H.-J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0020.pdf"〉In Memoriam Herbert Flathe (1919 – 1983) 〈/a〉〈br〉 (Homilius, J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0021.pdf"〉Book Reviews〈/a〉〈br〉 (Böhmel, H., Doan, D., Strobach, K., Jentzsch, G.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0022.pdf"〉Crustal Structure Beneath the Swabian Jura, SW Germany, from Seismic Refraction Investigations〈/a〉〈br〉 (Gajewski, D., Prodehl, C.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0024.pdf"〉Static Deformations and Gravity Changes at the Earth's Surface Due to Atmospheric Loading〈/a〉〈br〉 (Rabbel, W., Zschau, J.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0026.pdf"〉The Normal Modes of a Uniform, Compressible Maxwell Half-Space〈/a〉〈br〉 (Wolf, D.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0027.pdf"〉Magnetic Expression of the Continent-Ocean Boundary Between the Western Margin of Australia and the Eastern Indian Ocean〈/a〉〈br〉 (Veevers, J. J., Tayton, J. W., Johnson, B. D., Hansen, L.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0031.pdf"〉Domain State of Ti-Rich Titanomagnetites Deduced from Domain Structure Observations and Susceptibility Measurements〈/a〉〈br〉 (Appel, E., Soffel, H. C.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0032.pdf"〉Large-Scale Studies of Pi-2's Associated with Auroral Breakups〈/a〉〈br〉 (Samson, J. C.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0033.pdf"〉Book Reviews〈/a〉〈br〉 (Schröder,W., Engelhard, L.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0034.pdf"〉Source Orientation from Grid Test and Synthetic Seismograms and an Application to the Ibbenbüren Earthquake of July 1981〈/a〉〈br〉 (Hinzen, K.-G., Krummel, H.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0035.pdf"〉Active Seismic Layers and Crustal Structure in Some Italian Regions〈/a〉〈br〉 (Cassinis, R., Mazzoni, P., Ranzoni, A.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0037.pdf"〉Nonlinear Inversion of Local Seismic Travel Times for the Simultaneous Determination of the 3D-Velocity Structure and Hypocentres – Application to the Seismic Zone Vrancea〈/a〉〈br〉 (Koch, M.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0038.pdf"〉The Relationship Between the Magnetic Anisotropy and the 〈i〉c〈/i〉-Axis Fabric in a Massive Hematite Ore〈/a〉〈br〉 (Hrouda, F., Siemes, H., Herres, N., Hennig-Michaeli, C.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0040.pdf"〉The Inverse Scattering Problem for Reflection of Electromagnetic Dipole Radiation From Earth With Vertical Variation〈/a〉〈br〉 (Vidberg, H. J., Riska, D. O.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0041.pdf"〉The Method of Integral Equation in the Direct Current Resistivity Method and its Accuracy〈/a〉〈br〉 (Schulz, R.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0042.pdf"〉Stochastic Ion Acceleration by Coherent Electrostatic Waves〈/a〉〈br〉 (Varvoglis, H., Papadopoulos, K.)〈/a〉〈/li〉 〈li〉〈a href="https://gdz.sub.uni-goettingen.de/download/pdf/PPN1015067948_0056/LOG_0043.pdf"〉Book Reviews〈/a〉〈br〉 (Dieminger, W., Brüstle, W.)〈/a〉〈/li〉 〈/body〉 〈/html〉
    Description: research
    Description: DFG, SUB Göttingen
    Keywords: 550 ; Aurora ; Earthquakes ; Earth's Crust ; Earth's Mantle ; Geomagnetic Pulsations ; Rock Magnetism ; Seismology ; Seismograms ; FID-GEO-DE-7
    Language: English
    Type: anthology_digi
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    Time and space scattered volcanism of Mt. Etna driven by strike-slip tectonics (2019)
    Details
    Publication Date: 2019-12-05
    Description: High-resolution seismic reflection, magnetic and gravity data, acquired offshore of Etna volcano, provide a new insight to understanding the relationship between tectonics and spatial-temporal evolution of volcanism. The Timpe Plateau, a structural high pertaining to the Hyblean foreland domain, located offshore of southeastern Mt. Etna, is speckled by volcanics and strongly affected by strike-slip tectonics. Transpressive deformation produced a push-up and a remarkable shortening along WNW-ESE to NW-SE trending lineaments. Fault segments, bounding basinal areas, show evidence of positive tectonic inversion, suggesting a former transtensive phase. Transtensive tectonics favoured the emplacement of deep magmatic intrusive bodies and Plio-Quaternary scattered volcanics through releasing zones. The continuing of wrench tectonics along different shear zones led to the migration of transtensive regions in the Etna area and the positive inversion of the former ones, where new magma ascent was hampered. This process caused the shifting of volcanism firstly along the main WNW-ESE trending "Southern Etna Shear Zone", then towards the Valle del Bove and finally up to the present-day stratovolcano.
    Description: Published
    Description: 12125
    Description: 1T. Struttura della Terra
    Description: 1V. Storia eruttiva
    Description: 2V. Struttura e sistema di alimentazione dei vulcani
    Description: 1A. Geomagnetismo e Paleomagnetismo
    Description: 3A. Geofisica marina e osservazioni multiparametriche a fondo mare
    Description: 2TR. Ricostruzione e modellazione della struttura crostale
    Description: JCR Journal
    Keywords: Geodynamics ; Geophysics ; 04.06. Seismology ; Tectonics ; 04.08. Volcanology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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    PAPER (OA)
  • 94
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    Space-Based Sentinels for Measurement of Infrared Cooling in the Thermosphere for Space Weather Nowcasting (2018)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Infrared radiative cooling by nitric oxide (NO) and carbon dioxide (CO2) modulates the thermospheres density and thermal response to geomagnetic storms. Satellite tracking and collision avoidance planning require accurate density forecasts during these events. Over the past several years, failed density forecasts have been tied to the onset of rapid and significant cooling due to production of NO and its associated radiative cooling via emission of infrared radiation at 5.3 m. These results have been diagnosed, after the fact, through analyses of measurements of infrared cooling made by the Sounding of the Atmosphere using Broadband Emission Radiometry instrument now in orbit over 16 years on the National Aeronautics and Space Administration Thermosphere, Ionosphere, Mesosphere Energetics and Dynamics satellite. Radiative cooling rates for NO and CO2 have been further shown to be directly correlated with composition and exospheric temperature changes during geomagnetic storms. These results strongly suggest that a network of smallsats observing the infrared radiative cooling of the thermosphere could serve as space weather sentinels. These sentinels would observe and provide radiative cooling rate data in real time to generate nowcasts of density and aerodynamic drag on space vehicles. Currently, radiative cooling is not directly considered in operational space weather forecast models. In addition, recent research has shown that different geomagnetic storm types generate substantially different infrared radiative response, and hence, substantially different thermospheric density response. The ability to identify these storms, and to measure and predict the Earths response to them, should enable substantial improvement in thermospheric density forecasts.
    Keywords: Geophysics
    Type: NF1676L-28721 , Space Weather (ISSN 1539-4956) (e-ISSN 1542-7390); 16; 4; 363-375
    Format: application/pdf
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  • 95
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    Plan Execution Interchange Language (PLEXIL) Software User's Manual (2018)
    In:  CASI
    Details
    Publication Date: 2019-06-18
    Description: Plan Execution Interchange Language (PLEXIL) is a Core Flight System (or Core Flight Software) (cFS) based application, developed by the Autonomy Operating System project at NASA. cFS is open-source, reusable flight software, also developed by NASA and targeted to space missions. PLEXIL runs within the cFS framework, and is a wrapper integrating the open source PLEXIL Executive into the cFE (core Flight Executive) infrastructure. Software features include: Executes PLEXIL plans stored on local file system; Can be event-driven or clock-driven; and, Intended for "soft real time" discrete control.
    Keywords: Computer Programming and Software
    Type: ARC-E-DAA-TN62628
    Format: application/pdf
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  • 96
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    Representativeness of Single Lidar Stations for Zonally Averaged Ozone Profiles, Their Trends and Attribution to Proxies (2018)
    In:  CASI
    Details
    Publication Date: 2019-06-12
    Description: The paper is focusing on the representativeness of single lidar stations for zonally averaged ozone profile variations over the middle and upper stratosphere. From the lower to the upper stratosphere, ozone profiles from single or grouped lidar stations correlate well with zonal means calculated from Solar Backscatter Ultraviolet Radiometer (SBUV) satellite overpasses. The best representativeness with significant correlation coefficients is found within 15 degrees of latitude circles north or south of any lidar station. The paper includes also a multiple linear regression analysis on the relative importance of proxy time series for explaining variations in the vertical ozone profiles. Studied proxies represent variability due to influences outside of the earth system (solar cycle), as well as within the earth system i.e. dynamic processes (the Quasi Biennial Oscillation (QBO), the Arctic Oscillation (AO), the Antarctic Oscillation (AAO), the El Nio Southern Oscillation (ENSO)), those due to volcanic aerosol (Aerosol Optical Depth (AOD)), and to the tropopause height changes (including global warming) and those due to manmade contributions to chemistry (Equivalent Effective Stratospheric Chlorine (EESC)). Ozone trends are estimated, with and without removal of proxies, from the total available 1980 to 2015 SBUV record. Except for the chemistry related proxy (EESC) and its orthogonal function, the removal of the other proxies does not alter the significance of the estimated long-term trends. At heights above 15 hPa an inflection point between 1997 and 1999 marks the end of significant negative ozone trends, followed by a recent period between 1998-2015 with positive ozone trends. At heights between 15 hPa and 40 hPa the pre-1998 negative ozone trends tend to become less significant as we move towards 2015, below which the lower stratosphere ozone decline continues in agreement with findings of recent literature.
    Keywords: Geophysics
    Type: GSFC-E-DAA-TN69076 , Atmospheric Chemistry and Physics (ISSN 1680-7316) (e-ISSN 1680-7324); 18; 9; 6427-6440
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  • 97
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    Predicting Global Ground Geoelectric Field With Coupled Geospace and Three-Dimensional Geomagnetic Induction Models (2018)
    In:  Other Sources
    Details
    Publication Date: 2019-06-26
    Description: We forecast the global effects of space weather on the geoelectric and geomagnetic fields using a novel combination of methods. We use a realistic three-dimensional (3-D) model of Earth's electrical conductivity and a realistic representation of magnetospheric and ionospheric current systems. Our scheme involves the following steps: (1) We run a global magnetohydrodynamic model of the magnetosphere coupled to an electrostatic model of the ionosphere. (2) We calculate a global time series of the ground magnetic field resulting from the ionospheric, field-aligned, and magnetospheric currents of the global magnetohydrodynamic model. (3) We approximate this external field by an equivalent source current flowing in a thin shell above Earth. (4) We calculate a global time series of geoelectric and geomagnetic fields from the equivalent current and a 3-D conductivity model of Earth that also takes into account the coast effect due to large horizontal conductivity gradient. We verify our implementation by comparing the results against known analytic and numeric solutions, and then apply our scheme to the geomagnetic storm of 14 and 15 December 2006. In particular, we show that accounting for 3-D structure of Earth's conductivity results in significantly enhanced geoelectric field at large lateral gradients of conductivity, especially in coastal regions, both at middle and high latitudes. In the studied geomagnetic storm the largest values of 3-D geoelectric field are detected at high latitudes reaching 2.5 volts per kilometer and the 3-D effect extends inland by a few hundred kilometers.
    Keywords: Geophysics
    Type: GSFC-E-DAA-TN63486 , Space Weather (e-ISSN 1542-7390); 16; 8; 1028-1041
    Format: text
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  • 98
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    The Unprecedented 20162017 Arctic Sea Ice Growth Season: The Crucial Role of Atmospheric Rivers and Longwave Fluxes (2018)
    In:  CASI
    Details
    Publication Date: 2019-06-22
    Description: The 2016-17 Arctic sea ice growth season (October-March) exhibited the lowest end-of-season sea ice volume and extent of any year since 1979. An analysis of MERRA2 atmospheric reanalysis data and CERES radiative flux data reveals that a record warm and moist Arctic atmosphere supported the reduced sea ice growth through two pathways. First, numerous regional episodes of increased atmospheric temperature and moisture, transported from lower latitudes, increased the cumulative energy input from downwelling longwave surface fluxes. Second, in those same episodes, the efficiency that the atmosphere cooled radiatively to space was reduced, increasing the amount of energy retained in the Arctic atmosphere and reradiated back toward the surface. Overall, the Arctic radiative cooling efficiency shows a decreasing trend since 2000. The results presented highlight the increasing importance of atmospheric forcing on sea ice variability demonstrating that episodic Arctic atmospheric rivers, regions of elevated poleward water vapor transport, and the subsequent surface energy budget response is a critical mechanism actively contributing to the evolution of Arctic sea ice.
    Keywords: Geophysics
    Type: NF1676L-28805 , Geophysical Research Letters (ISSN 0094-8276) (e-ISSN 1944-8007); 45; 10; 5204-5212
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  • 99
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    Microphysical Variability of Amazonian Deep Convective Cores Observed by CloudSat and Simulated by a Multi-Scale Modeling Framework (2018)
    In:  CASI
    Details
    Publication Date: 2019-06-14
    Description: Recently launched cloud observing satellites provide information about the vertical structure of deep convection and its microphysical characteristics. In this study, CloudSat reflectivity data is stratified by cloud type, and the contoured frequency by altitude diagrams reveal a doublearc structure in deep convective cores (DCCs) above 8 km. This suggests two distinct hydrometeor modes (snow versus hail/graupel) controlling variability in reflectivity profiles. The daynight contrast in the double arcs is about four times larger than the wetdry season contrast. Using QuickBeam, the vertical reflectivity structure of DCCs is analyzed in two versions of the Superparameterized Community Atmospheric Model (SP-CAM) with single-moment (no graupel) and double-moment (with graupel) microphysics. Doublemoment microphysics shows better agreement with observed reflectivity profiles; however, neither model variant captures the double-arc structure. Ultimately, the results show that simulating realistic DCC vertical structure and its variability requires accurate representation of ice microphysics, in particular the hail/graupel modes, though this alone is insufficient.
    Keywords: Geophysics
    Type: NF1676L-26880 , Atmospheric Chemistry and Physics (ISSN 1680-7316) (e-ISSN 1680-7324); 18; 9; 6493-6510
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  • 100
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    Decline in Antarctic Ozone Depletion and Lower Stratospheric Chlorine Determined From Aura Microwave Limb Sounder Observations (2018)
    In:  Other Sources
    Details
    Publication Date: 2019-07-20
    Description: Attribution of Antarctic ozone recovery to the Montreal protocol requires evidence that (1)Antarctic chlorine levels are declining and (2) there is a reduction in ozone depletion in response to achlorine decline. We use Aura Microwave Limb Sounder measurements of O3, HCl, and N2O to demonstratethat inorganic chlorine (Cly) from 2013 to 2016 was 223 93 parts per trillion lower in the Antarctic lowerstratosphere than from 2004 to 2007 and that column ozone depletion declined in response. The mean Clydecline rate, ~0.8%/yr, agrees with the expected rate based on chlorofluorocarbon lifetimes. N2Omeasurements are crucial for identifying changes in stratospheric Cly loading independent of dynamicalvariability. From 2005 to 2016, the ozone depletion and Cly time series show matching periods of decline,stability, and increase. The observed sensitivity of O3 depletion to changing Cly agrees with the sensitivitysimulated by the Global Modeling Initiative chemistry transport model integrated
    Keywords: Geophysics
    Type: GSFC-E-DAA-TN54275 , Geophysical Research Letters (ISSN 0094-8276) (e-ISSN 1944-8007); 45; 1; 382-390
    Format: text
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