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  • 1
    Keywords: VLBI ; geodesy ; astrometry ; high resolution imaging ; antenna and networks ; recorders and correlators
    Description / Table of Contents: Chapter 1. High Resolution and Better Imaging --- MUSES-B Satellite System for VSOP / H. Hirosawa / pp. 3-9 --- Mechanical Design and Development of a Deployable Space Antenna for Japanese VLBI Space Observatory Program / M. C. Natori, T. Takano, K. Miyoshi, T. Inoue and T. Kitamura / pp. 10-20 --- Operation of the VSOP Satellite / Y. Murata / pp. 21-25 --- Ground Supporting Facilities for VSOP Observations / N. Kawaguchi, H. Kobayashi, T. Miyaji, H. Mikoshiba, A. Tojo, Z. Yamamoto and H. Hirosawa, / pp. 26-33 --- Space VLBI Simulations / D. W. Murphy, V. Yakimov, H. Kobayashi, A. R. Taylor and I. Fejes / pp. 34-38 --- Space VLBI Scheduling Studies: Techniques and Results / D. L. Meier / pp. 39-43 --- An Affordable Advanced Space VLBI Mission / J. S. Ulvestad, D. L. Meier, D. W. Murphy, R. A. Preston and J. G. Smith / pp. 44-48 --- Space VLBI Experiments Using ETS-VI / T. lwata, H. Kiuchi, M. Imae, M. Sekido and S. Hama / pp. 49-53 --- Space VLBI Polarization Observations / D. C. Gabuzda and A. R. Taylor / pp. 54-58 --- Space VLBI User Assistance Software / I. Fejes, D. W. Murphy, A. R. Taylor, V. Yakimov and G. Young / pp. 59-69 --- mm VLBI / L. B. Bååth / pp. 70-74 --- "High Sensitivity" VLBI at 86 GHz: First Fringes with the 100 m Radio Telescope at Effelsberg / K. J. Standke, D. A. Graham, T. P. Krichbaum, A. Witzel, C. J. Schalinski, A. E. E. Rogers, R. Booth, L. B. Bååth / pp. 75-85 --- Burst Mode System toward mJy Level mm-VLBI / M. Inoue, K. Matsumoto and N. Kawaguchi / pp. 86-88 --- 86 GHz Global VLBI Progress Report / S. Doeleman, A. E. E. Rogers, L. Bååth, C. Schalinski, T. Krichbaum, M. Inoue, A. Zensus, S. Padin, J. Carlstrom, D. Graham, C. Predmore, J. Moran, D. Backer, M. Wright, N. Whyborn, L. Nyman, K. Standke, M. Lerner and S. Kameno / pp. 89-92 --- Global 3- and 7-mm VLBI Observations of OJ287 / C. E. Tateyama and M. Inoue / pp. 93-100 --- VLBI Observations of the 22 GHz H2 0Maser in Late Type Stars / H. Takaba, T. lwata, M. Miyoshi, N. Ukita, S. Kameno and K. Matsumoto / pp. 101-104 --- The H2 0 Super Maser Outburst Region in the Orion Nebula / L. I. Matveyenko and P. J. Diamond / pp. 105-109 --- The Cosmological Application of the VLBI Technique at Ultimate Resolutions / L. I. Gurvits / pp. 110-114 --- First VLBI Images of Supernova 1993J in the Galaxy M81 / N. Bartel, M. F. Bietenholz, M. P. Rupen, J. E. Conway, A. J. Beasley, R. A. Sramek, J. D. Romney, M. A. Titus, D. A. Graham, V. I. Altunin, D. L. Jones, A. Rius, T. Venturi, G. Umana, R. L. Francis, M. L. McCall, M. G. Richer, C. C. Stevenson, K. W. Weiler, S. D. Van Dyk, N. Panagia, W. H. Cannon, J. Popelar and R. J. Davis / pp. 115-122 --- The Visibility-Spectrum Relation among Radio Loud AGNs / S. Kameno, M. Inoue, K. Matsumoto, H. Takaba, T. lwata, R. Nan and R. T. Schilizzi / pp. 123-129 --- Identification of the Superluminal Motion in Faint Parsec-Scale Jet of 3C390.3 / S. Wu, E. Preuss, W. Alef, K. I. Kellermann and Y. Qiu / pp. 130-136 --- A VLBI Search for Compact Nonthermal Emission from the Herbig Be Star MWC 297 / S. L. Skinner and R. B. Phillips / pp. 137-140 --- Snapshot VLBI Mapping of Variable Extragalactic Sources at 327 MHz / L. I. Gurvits, W. Alef, D. R. Altschuler, J. E. Carson, B. Dennison, D. Graham and A. S. Trotter / pp. 141-145 --- AO 0235+164151;A "Heretic" BL Lac / H. S. Chu, L. B. Bååth, F. T. Rantakyrö, R. S. Booth, R. E. Spencer and F. J. Zhang / pp. 146-155 --- Chapter 2. Antenna and Networks --- The New Receiver in the S, X, K Bands for the VLB1 Medicina Dish / A. Orfei, G. Maccaferri, S. Mariotti, M. Morsiani, G. P. Zacchiroli and G. Tomassetti / pp. 159-164 --- The Upgrade Proposal for the VLBI Medicina Antenna / A. Orfei, G. Maccaferri, S. Mariotti, M. Morsiani and G. P. Zacchiroli / pp. 165-170 --- VLBI at the Kyushu Tokai University / M. Fujishita, K. Miyasato, T. Yoshiyama and Y. Matsumae / pp. 171-175 --- VLBI Activities at the Matera Space Geodesy Center / R. Lanotte, G. Bianco, M. Fermi and L. Garramone / pp. 176-184 --- The Mizusawa 10-m Antenna and Its VLBI Observation System / K. M. Shibata, Y. Asaki, I. Asari, Y. Fukuzaki, T. Hara, K. Horiai, K. lwadate, 0. Kameya, N. Kawano, S. Kuji, S. Manabe, S. Sakai, T. Sasao, K. Sato, Y. Tamura and S. Tsuruta / pp. 185-190 --- The 6 m VLBI Telescope at Kagoshima, Japan / T. Omodaka, M. Morimoto, N. Kawaguchi, T. Miyaji, S. Yasuda, T. Suzuyama, T. Kitagawa, T. Miyazaki, L. Furuya, T. Jike, K. Miyazawa, H. Mikoshiba, S. Kuji, 0. Kameya and Kagoshima VLBI Group / pp. 191-195 --- Radio Telescopes and VLBI Facilities in Brazil / P. Kaufmann and C. E. Tateyama / pp. 196-199 --- Cryogenic Cooled Receivers for the QUASAR Network / A. V. lpatov, I. A. lpatova and V. V. Mardyshkin / pp. 200-204 --- The Australian Long Baseline Array—Status Report / A. Tzioumis, W. Wilson and R. Ferris / pp. 205-210 --- The Asia-Pacific Telescope—APT / A. Tzioumis / pp. 211-217 --- Present Status and Future Development on VLBI Facilities in China / Ye S. and Oian Z. / pp. 218-220 --- Chapter 3. The New Trends in Geodesy and Astrometry --- Plate Dynamics near Boundaries: What Governs the Transition between Episodic and Continuous Motions? / K. Heki / pp. 223-228 --- Improved Global Atmospheric Mapping Functions for VLBI and GPS / A. Niell / pp. 229-231 --- Method of Differential Fringe Phase Tracking / N. Kawano, T. Sasao, T. Hara, S. Kuji, 0. Kameya, K. Sato, K. lwadate and Y. Asaki / pp. 232-236 --- The Chinese National Space Geodetic Network / J. Cai / pp. 237-240 --- Satellite Position Determination by Difference of Range (DOR) Measurements / I. Kardos / pp. 241-250 --- Recent Geodetic VLBI Results from Shanghai Observatory / Ye S., Qian Z., Chen G. and Zhou, R. / pp. 251-253 --- An Antennacluster-Antennacluster VLBI Project VERA / T. Sasao, N. Kawano, T. Hara, S. Kuji, K. Shibata, K. lwadate, K. Sato, 0. Kameya, S. Tsuruta, K. Asari, Y. Tamura, K. Horiai, K. Sato, H. Hanada, T. Tsubokawa, K. Yokoyama, S. Manabe and S. Sakai / pp. 254-258 --- An Astronomical Observational Plan Using the VERA / O. Kameya, T. Sasao, N. Kawano and K. M. Shibata / pp. 259-263 --- Estimated Errors in the Antennacluster-Antennacluster VLBI / T. Hara, T. Sasao, K. Sato, N. Kawano and O. Kameya / pp. 264-271 --- Sub-Milliarcsecond Astrometry with Phase-Referenced VLBI / D. L. Jones, J.-F. Lestrade, R. A. Preston and R. B. Phillips / pp. 272-276 --- Selenodesy by Using Differential VLBI Observations of Artificial Radio Sources on the Moon / H. Hanada, M. Ooe, N. Kawano, K. lwadate, S. Kuji, K. Sato, S. Tsuruta, T. Sasao, 0. Kameya, T. Hara, N. Kawaguchi, M. Fujishita, M. Morimoto, S. Yasuda, H. Mizutani and A. Fujimura / pp. 277-281 --- Gravitational Lens Effect and Measurement of Stellar Mass / M. Hosokawa, K. Ohnishi, T. Fukushima and M. Takeuti / pp. 282-286 --- Evidence for Source Structure Effects Caused by the Quasar 3C273 in Geodetic VLBI Data / P. Charlot / pp. 287-294 --- Astronomical Periods in the Solar System / Y. Macyama / pp. 295-305 --- Pulsar VLBI Experiment Using Kashima-Usuda Baseline / M. Sekido, S. Hama, H. Kiuchi, Y. Hanado, Y. Takahashi, M. Imae, K. Fujisawa and H. Hirabayashi / pp. 306-312 --- The Celestial Reference System and Frame of the International Earth Rotation Service / E. F. Arias / pp. 313-315 --- Quasi Simultaneous Observations in the Arclength Method of Reduction of Astrometric VLBI Data / M. S. De Biasi, E. F. Arias and J.-F. Lestrade / pp. 316-318 --- Few-Hundred Microarcsecond VLBI Astrometry: Applications and Reduction of Limiting Error Sources / S. T. Lowe and R. N. Treuhaft / pp. 319-323 --- Chapter 4. Recorders and Correlators --- A New Advanced One-Unit VLBI Correlator (NAOCO) / K. Shibata, T. Sasao, N. Kawaguchi, Y. Tamura, S. Kameno, M. Miyoshi, K. Asari, S. Manabe, T. Hara, S. Kuji, K. Sato, T. Miyaji, K. Matsumoto, Y. Asaki, S. Yasuda and S. Nakamura / pp. 327-331 --- A Programmable VLBI Correlator Using Parallel Computing / G. Petit and T. Fayard / pp. 332-337 --- Status of the New K-4 System / H. Kiuchi, S. Hama, J. Amagai, Y. Hanado, A. Kaneko and M. Imae / pp. 338-344 --- The S2 Frequency Agile Data Acquisition Terminal / W. T. Petrachenko, P. Mathieu, J. Popelar, W. H. Cannon, H. Tan and R. D. Wietfeldt / pp. 345-350 --- A Chipset for a MKII Style Correlator / G. Tuccari / pp. 351-359 --- Keeping Compatibility in International VLBI Systems / T. Yoshino, S. Hama and N. Kawaguchi / pp. 360-364 --- Development of the Burst Mode VLBI / K. Matsumoto and N. Kawaguchi / pp. 365-370 --- The K4 Correlator / S. Hama, H. Kiuchi, M. Sekido and M. Imae / pp. 371-376 --- Notes on High Data Rate Recording / J. Takayama / pp. 377-380
    Pages: Online-Ressource (XII, 383 Seiten)
    ISBN: 4887041128
    Language: English
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  • 2
    Unknown
    Rijeka : InTech
    Keywords: geology ; geophysics ; geodesy ; remote sensing
    Pages: Online-Ressource (742 Seiten)
    ISBN: 9789533070056
    Language: English
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  • 3
    Keywords: geodesy ; geophysics ; seismicity
    Description / Table of Contents: This issue is addressed to researchers dealing with seismic studies as the result of an interactive process as part of macroseismic approaches and an a-priori determination of the elements if the territory is involved in the seismic risk evaluation. The significant features which distinguish the work can be identified in the use of new methods for the evaluation of the damage scenarios of historical earthquakes (the local intensity virtual distribution); the adoption of a quick procedure of 2nd level seismic microzonation, depicted on a reduced number of parameters and in situ surveys; the characterization of an innovative seismic vulnerability evaluation procedure based on the analyses of the safety reducers and social priority levels of the elements of territory. The proposed studies, carried out in Sicily and Calabria (Italy), define an operative level of approaches aimed at engineering and civil protection applications.
    Pages: Online-Ressource (132 Seiten)
    ISBN: 9783764372637
    Language: English
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  • 4
    Unknown
    Berlin ; Heidelberg : Springer
    Keywords: GPS ; Global Positioning System ; geodesy
    Description / Table of Contents: The subject of the book is an indepth description of the theory and mathematical models behind the application of the Global Positioning System in geodesy and geodynamics. The text has been prepared by leading experts in the field, contributing their particular points of view. Unlike a collection of disjoint papers, the text provides a continous flow of ideas and developments. The mathematical models for GPS measurements are developed in the first half of the book, followed by the description of GPS solutions for geodetic applications on local, regional and global scales.
    Pages: Online-Ressource (VII, 407 Seiten) , 120 schwarz-weiß Abbildungen
    ISBN: 9783540494478
    Language: English
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  • 5
    Unknown
    Rijeka : InTech
    Keywords: civil engineering ; geology ; geophysics ; geodesy ; remote sensing
    Pages: Online-Ressource (598 Seiten)
    ISBN: 9789533070032
    Language: English
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  • 6
    Keywords: Astrometry ; Astronomical Observation ; astronomy ; geodesy ; optical interferometry ; relativistic jet
    Description / Table of Contents: A masterly survey of the last 13 years of Very Long Baseline Interferometry, reviewed in light of the most advanced astronomical observations. Topics covered include: Nonthermal emission from extragalactic radio sources; Principles of synchrotron emission in relation to astrophysics; Theory of relativistic jets; Young, powerful radio sources and their evolution; Scintillation in extragalactic radio sources; Radio and optical interferometry; Radio polarimetry; Unified schemes; Deep fields; Tropospheric and ionospheric phase calibration; Supernovae; VLBI for geodesy and geodynamics.
    Pages: Online-Ressource (XVI, 413 pages)
    ISBN: 9781402024061
    Language: English
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  • 7
    Publication Date: 2017-04-04
    Description: To mark the centennial anniversary of the 1908 earthquake that shook Messina, Italy, the Istituto Nazionale di Geofisica e Vulcanologia (INGV) began the “Messina 1908–2008” research project. The aim is to clarify the extension deformation processes that occur in the Strait of Messina and to understand relationships between subduction and crustal deformation there by merging existing data and studies, and by collecting new and more detailed seismological, geodetic, historical, and satellite observations.
    Description: INGV
    Description: Published
    Description: 225–226
    Description: 3.3. Geodinamica e struttura dell'interno della Terra
    Description: N/A or not JCR
    Description: reserved
    Keywords: Seismology ; geodesy ; 01. Atmosphere::01.03. Magnetosphere::01.03.04. Structure and dynamics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 8
    Publication Date: 2017-04-04
    Description: We analysed elevation changes induced by the 1997–1998 Umbria-Marche, central Apennines (Italy) earthquakes. We employed data from a first-order geodetic levelling line measured in 1951, 1992 and 1998. The line bears a record of pre-seismic and coseismic strains associated with the causative fault of the 1997 September 26, 09:40 mainshock (Mw = 6.0). A first level analysis performed under the assumption of slip homogeneity of coseismic slip shows misfits that cannot be reduced simply by altering the fault size and geometry. A more detailed analysis based on a distribution of coseismic slip obtained from broad-band seismograms provides a better fit and is in agreement with 1951–1992 elevation changes interpreted as precursory slip by previous investigators. The levelling data sets new constraints on the location, extent, dip and depth of the fault, in full agreement with seismological evidence and images from SAR interferometry. The data show no evidence for slip in the uppermost 3 km of the crust, suggesting that a major and widely recognized normal fault that exists in the area is no longer active and showing a tendency of present tectonic strains to revert the current topographic setting.
    Description: Published
    Description: 819-829
    Description: 3.2. Tettonica attiva
    Description: JCR Journal
    Description: reserved
    Keywords: earthquakes ; fault slip ; geodesy ; normal faulting ; Umbria-Marche ; 04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations ; 04. Solid Earth::04.06. Seismology::04.06.03. Earthquake source and dynamics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 9
    Publication Date: 2017-04-04
    Description: The island of Pantelleria is an active volcano located in the Sicily Channel (Southern Italy), in the middle of a continental rift system. Since the 1980s the island was periodically surveyed by using geodetic techniques (EDM, levelling, GPS and high precise gravimetry) to monitor the regional and local volcanic dynamics. Gravity data, collected between 1990 and 1998, show short and long wavelength changes due to the combined effect of shallow and deep sources. They reflect, to some degree, the structural setting of the island as delineated by the Bouguer anomaly field, which indicates that the island is broken up into two main basement blocks. The latter are bordered by two lineaments, probably regional faults related to the global geodynamics of the Sicily Channel Rift Zone. Moreover, the inverse correlation between the gravity and altimetric variations suggests that: i) Pantelleria is kinematically divided in two blocks; ii) the observed behaviour is strongly influenced by the geodynamics of the Sicily Channel. A new interpretation of the fully reprocessed data sets is presented, focusing on the spatial–temporal features of the horizontal ground deformation and gravity changes compared to the Bouguer anomaly and altimetric data. This leads to conclude that volcanism on the island has been probably strongly influenced by the global geodynamics of the Sicily Channel, and future eruptions are most likely to occur at the structural boundary separating the two blocks.
    Description: Published
    Description: 146– 162
    Description: reserved
    Keywords: Pantelleria ; geodesy ; deformation ; gravity ; volcanism ; geodynamics ; 04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations ; 04. Solid Earth::04.03. Geodesy::04.03.05. Gravity variations ; 04. Solid Earth::04.03. Geodesy::04.03.06. Measurements and monitoring
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 10
    Publication Date: 2017-04-04
    Description: We have analysed the deformation documented during unrest at the Campi Flegrei caldera, Italy, between 1981 and 2001. Via inverse modelling, we constrain the location, geometry and size of the source responsible for the continuing period of surface deformation.We present a critical re-evaluation of results from previously published models and for the first time invert post-1994 data to infer source parameters. Our evaluation is based on constraints from additional horizontal displacement data, mechanical properties of the country rocks, effects of volcanic surface loading and on other geophysical and geochemical observations. We invert leveling and tide-gauge data for a spherical point (Mogi-model) source, a penny-shaped crack and finally a prolate spheroid. Despite the good qualities of fit of both the Mogi-model and the penny-shaped source to the vertical displacement data, our critical evaluation of the implied source properties forces us to reject these models. We propose instead a vertical prolate spheroid located about 800 m East of Pozzuoli at a depth of 2.9 km (95% confidence bound 2.0 to 4.2 km) with an aspect ratio of 0.51 (95% bounds 0.37–0.69) as a more appropriate source model. This model best accounts for the criteria employed and the observed deformation between 1981 and 2001. Combined with results from the inversion of gravity change data (1982–1984) for the spheroidal source, we infer a hybrid nature of the source including both magmatic and hydrothermal components.
    Description: Published
    Description: 132– 145
    Description: reserved
    Keywords: caldera unrest ; geodesy ; data inversion ; magma ; hydrothermal system ; Campi Flegrei ; 04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 11
    Publication Date: 2017-04-04
    Description: Space geodesy data are used to verify whether plates move chaotically or rather follow a sort of tectonic mainstream. While independent lines of geological evidence support the existence of a global ordered flow of plate motions that is westerly polarized, the Terrestrial Reference Frame (TRF) presents limitations in describing absolute plate motions relative to the mantle. For these reasons we jointly estimated a new plate motions model and three different solutions of net lithospheric rotation. Considering the six major plate boundaries and variable source depths of the main Pacific hotspots, we adapted the TRF plate kinematics by global space geodesy to absolute plate motions models with respect to the mantle. All three reconstructions confirm (i) the tectonic mainstream and (ii) the net rotation of the lithosphere. We still do not know the precise trend of this tectonic flow and the velocity of the differential rotation. However, our results show that assuming faster Pacific motions, as the asthenospheric source of the hotspots would allow, the best lithospheric net rotation estimate is 13.4 ± 0.7 cm yr−1. This superfast solution seems in contradiction with present knowledge on the lithosphere decoupling, but it matches remarkably better with the geological constraints than those retrieved with slower Pacific motion and net rotation estimates. Assuming faster Pacific motion, it is shown that all plates move orderly ‘westward’ along the tectonic mainstream at different velocities and the equator of the lithospheric net rotation lies inside the corresponding tectonic mainstream latitude band (≈±7◦), defined by the 1σ confidence intervals.
    Description: Published
    Description: reserved
    Keywords: lithospheric ; geodesy ; 04. Solid Earth::04.01. Earth Interior::04.01.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 12
    Publication Date: 2017-04-04
    Description: Since 1993, geodetic data obtained by different techniques (GPS, EDM, SAR, levelling) have detected a consistent inflation of the Mt. Etna volcano. The inflation, culminating with the 1998– 2001 strong explosive activity from summit craters and recent 2001 and 2002 flank eruptions, is interpreted in terms of magma ascent and refilling of the volcanic plumbing system and reservoirs. We have modelled the 1993–1997 EDM and GPS data by 3-D pressurized sources to infer the position and dimension of the magma reservoir. We have performed analytical inversions of the observed deformation using both spheroidal and ellipsoidal sources embedded in a homogeneous elastic half-space and by applying different inversion methods. Solutions for these types of sources show evidence of a vertically elongated magma reservoir located 6 km beneath the summit craters. The maximum elevation of topography is comparable to such depth and strong heterogeneities are inferred from seismic tomography; in order to assess their importance, further 3-D numerical models, employing source parameters extracted from analytical models, have been developed using the finite-element technique. The deformation predicted by all the models considered shows a general agreement with the 1993–1997 data, suggesting the primary role of a pressure source, while the complexities of the medium play a minor role under elastic conditions. However, major discrepancies between data and models are located in the SE sector, suggesting that sliding along potential detachment surfaces may contribute to amplify deformation during the inflation. For the first time realistic features of Mt. Etna are studied by a 3-D numerical model characterized by the topography and lateral variations of elastic structure, providing a framework for a deeper insight into the relationships between internal sources and tectonic structures.
    Description: Published
    Description: 852-862
    Description: 3.6. Fisica del vulcanismo
    Description: JCR Journal
    Description: reserved
    Keywords: finite-element methods ; geodesy ; lateral heterogeneity ; volcanic activity ; volcanic structure ; 04. Solid Earth::04.03. Geodesy::04.03.08. Theory and Models
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 13
    Publication Date: 2017-04-04
    Description: The interpretation of geodetic data in volcanic areas is usually based on analytical deformation models. Although numerical Finite Element modeling allows realistic features such as topography and crustal heterogeneities to be included, the technique is not computationally convenient for solving inverse problems using classical methods. In this paper we develop a general tool to perform inversions of geodetic data by means of 3D FE models. The forward model is a library of numerical displacement solutions, where each entry of the library is the surface displacement due to a single stress component applied to an element of the grid. The final solution is a weighted combination of the six stress components applied to a single element-source. The precomputed forward models are implemented in a global search algorithm, followed by an appraisal of the sampled solutions. After providing extended testing, we apply the method to model the 1993-97 inflation phase at Mt. Etna, documented by GPS and EDM measurements. We consider four different forward libraries, computed in models characterized by homogeneous/ heterogeneous medium and flat/topographic free surface. Our results suggest that the elastic heterogeneities of the medium can significantly alter the position of the inferred source, while the topography has minor effect.
    Description: Published
    Description: 3.6. Fisica del vulcanismo
    Description: JCR Journal
    Description: partially_open
    Keywords: numerical techniques ; inversion ; geodesy ; volcanic structure ; Mount Etna ; 04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 14
    Publication Date: 2017-04-04
    Description: Lo Stretto è uno straordinario oggetto di studio, in cui gli effetti di una subduzione ancora attiva si sommano a una tettonica crostale vigorosa, di cui il terremoto del 1908 è il testimone più evidente. L’Istituto Nazionale di Geofisica e Vulcanologia ha avviato il progetto Messina 1908-2008 per unificare le reti di osservazione sismologiche e geodetiche già esistenti nello Stretto, estendendole con strumenti sul fondo marino ed elevandone gli standard tecnologici. Questo nuovo impegno scientifico mira a implementare il numero e la qualità dei dati e a rendere pienamente disponibili alla ricerca tutte le osservazioni condotte in quest’area negli ultimi tre decenni.
    Description: Published
    Description: 475-483
    Description: 3.2. Tettonica attiva
    Description: open
    Keywords: seismology ; geodesy ; Earthquakes ; 01. Atmosphere::01.02. Ionosphere::01.02.06. Instruments and techniques
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: book chapter
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  • 15
    Publication Date: 2019-11-04
    Description: The 1997 September-October Umbria-Marche sequence has been extensively studied in the past by analyzing coseismic displacement data (GPS, leveling, SAR). Here we focus on synthetic data representative of the main event of the 1997 Umbria-Marche sequence and investigate the effects of a crustal layering proper to the Colfiorito area on surface displacements and inferred source features when inverting coseismic geodetic data without taking into account layering. We compare bootstrapping and NA-Bayes as tools for parameter uncertainty assessment and show how the Akaike Information Criterion can be used to select the model which is most likely to be correct. Since SAR images offer the most complete coverage of the study area, we use synthetic line-ofsight displacement data.
    Description: JCR Journal
    Description: open
    Keywords: data inversion ; geodesy ; coseismic displacement ; 04. Solid Earth::04.03. Geodesy::04.03.99. General or miscellaneous
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  • 16
    Publication Date: 2019-11-04
    Description: Ground Penetrating Radar (GPR) and Global Positioning System (GPS) techniques were employed in snow accumulation studies during the Italian leg of the International Trans-Antarctic Scientific Expedition (ITASE). The acquired data were useful both for glaciological and climatological studies. This paper presents some results obtained by GPR and GPS data integration employed to determine accumulation/ablation processes along the profile of the traverse that show how the snow-sublayer thickness can vary quickly in just a few kilometres. Some examples of data integration employed in detection and characterisation of buried crevasses are also presented.
    Description: JCR Journal
    Description: open
    Keywords: GPR ; GPS ; geophysics ; geodesy ; antartica ; 04. Solid Earth::04.02. Exploration geophysics::04.02.05. Downhole, radioactivity, remote sensing, and other methods
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 17
    Electronic Resource
    Electronic Resource
    Springer
    Astrophysics and space science 239 (1996), S. 275-280 
    ISSN: 1572-946X
    Keywords: VLBI ; space VLBI ; geodesy ; space geodesy ; reference frames ; orbit determination
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Space VLBI is a new observing technique which will be available in the second half of this decade by radio telescopes as interferometer elements in orbit. Besides the main astronomical interests, this new development has some very interesting potential applications in satellite dynamics, geodesy and geodynamical research which qualify space VLBI a potential new technique in space geodesy. A geodesy demostration experiment (GEDEX) is being proposed for the Japanese space VLBI satellite-VSOP, with the main objectives of reference frame interconnections and orbit accuracy improvement of the space radio telescope. The paper gives a review of the special characteristics of space VLBI and a general background of the GEDEX proposal.
    Type of Medium: Electronic Resource
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  • 18
    Electronic Resource
    Electronic Resource
    Springer
    Mathematical geology 22 (1990), S. 239-252 
    ISSN: 1573-8868
    Keywords: blue ; blup ; covariance function ; geodesy ; homogeneous structure function ; meteorology ; mining ; optimum interpolation ; spatial blup ; statistics ; variogram
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Mathematics
    Notes: Abstract In this article, kriging is equated with spatial optimal linear prediction, where the unknown random-process mean is estimated with the best linear unbiased estimator. This allows early appearances of (spatial) prediction techniques to be assessed in terms of how close they came to kriging.
    Type of Medium: Electronic Resource
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  • 19
    Electronic Resource
    Electronic Resource
    Springer
    Studia geophysica et geodaetica 39 (1995), S. 257-261 
    ISSN: 1573-1626
    Keywords: geological motion ; stress ; stress release ; geodesy ; relevelling ; retriangulation ; GPS
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geosciences , Physics
    Notes: Summary The present state of knowledge on recent crustal movements, stresses and earthquakes around the Tornquist Zone has been collected. It is found that the Tornquist Zone is neither geodetically nor seismically active, but it separates regions of different earthquake activity.
    Type of Medium: Electronic Resource
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  • 20
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    In:  Geochemistry, Geophysics and Geosystems, Warszawa, Pergamon, vol. 1, no. 3-4, pp. 1-12, pp. 1246
    Publication Date: 1999
    Keywords: Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Fault zone ; South ; America ; Global Positioning System ; geodesy ; reference ; frames
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    In:  J. Geophys. Res., Hannover, Geophys. Institut der Universität Karlsruhe, vol. 111, no. B5, pp. 199-208, pp. B05403, (ISSN: 1340-4202)
    Publication Date: 2006
    Keywords: Strain ; Fault zone ; SAF ; USA ; Modelling ; Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Geodesy ; JGR ; geodesy ; strain ; accumulation ; Carrizo ; segment ; 0560 ; Computational ; Geophysics: ; Numerical ; solutions ; (4255) ; 1236 ; Geodesy ; and ; Gravity: ; Rheology ; of ; the ; lithosphere ; and ; mantle ; (7218, ; 8160) ; 1242 ; Seismic ; cycle ; related ; deformations ; (6924, ; 7209, ; 7223, ; 7230) ; 1240 ; Satellite ; geodesy: ; results ; (6929, ; 7215, ; 7230, ; 7240) ; 8111 ; Tectonophysics: ; Continental ; tectonics: ; strike-slip ; and ; transform
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  • 22
    Publication Date: 2006
    Keywords: Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Strain ; Fault zone ; SAF ; Tectonics ; Plate tectonics ; Global Positioning System ; geodesy ; Cascadia ; subduction ; zone ; fault ; zone ; Subduction zone
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  • 23
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    In:  Phys. Earth Plan. Int., Tokyo, Dt. Geophys. Ges., vol. 151, no. 3-4, pp. 181-193, pp. L06615, (ISSN: 1340-4202)
    Publication Date: 2005
    Keywords: Modelling ; Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Tsunami(s) ; Source parameters ; Geodesy ; Seafloor ; geodesy ; Crustal ; deformation ; Resolution ; PEPI
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