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  • 1
    Call number: 6/M 12.0073
    In: International Association of Geodesy symposia
    Type of Medium: Monograph available for loan
    Pages: xv, 407 S.
    ISBN: 9783642220777
    Series Statement: International Association of Geodesy symposia 137
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  • 2
    Call number: 6/S 02.0237(20) / 1. Ex. ; 6/S 02.0237(20) / 2. Ex. ; 15/S 02.0237(20) / 3. Ex. ; 15/S 02.0237(20) / 4. Ex.
    In: Geotechnologien science report
    Description / Table of Contents: Significant advances in the scientific use of space based data were achieved in three joint interdisciplinary projects based on data of the satellite missions CHAMP, GRACE and GOCE within the R&D program GEOTECHNOLOGIEN. It was possible to explore and monitor changes related to the Earth's surface, the boundary layer between atmosphere and solid earth, and the oceans and ice shields. This boundary layer is our habitat and therefore is in the focus of our interests. The Earth's surface is subject to anthropogenetic changes, to changes driven by the Sun, Moon and planets, and by changes caused by processes in the Earth system. The state parameters and their changes are best monitored from space. The theme Observation of the System Earth from Space offers comprehensive insights into a broad range of research topics relevant to society including geodesy, oceanography, atmospheric science (from meteorology to climatology), hydrology and glaciology.
    Type of Medium: Series available for loan
    Pages: xv, 230 S. : farb. graph. Darst, , 70 schw.-w. Ill., 10 farb. Ill. , 235 mm x 155 mm
    ISBN: 9783642321344
    Series Statement: Geotechnologien science report 20
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  • 3
    Call number: S 99.0038(527)
    In: Deutsche Geodätische Kommission bei der Bayerischen Akademie der Wissenschaften
    Type of Medium: Series available for loan
    Pages: 102 S.
    ISBN: 3769695666
    Series Statement: Deutsche Geodätische Kommission bei der Bayerischen Akademie der Wissenschaften : Reihe C 527
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  • 4
    Call number: 6/M 16.89962
    In: International Association of Geodesy Symposia, 142
    Description / Table of Contents: Part I Lincei session -- Opening remarks for the 2013 Hotine-Marussi symposium -- Fernado Sansò laudation -- Global Reference Systems: Theory and open questions -- Part II Geodetic data analysis -- Noise analysis of continuous GPS time series of selected EPN stations to investigate variations in stability of monument types -- Improvement of Least-Squares Collocation error estimates using local GOCE Tzz signal standard deviations -- Multivariate Integer Cycle-Slip Resolution: A Single-Channel Analysis -- Theory of Earth Rotation Variations -- Variable seasonal and subseasonal oscillations in sea level anomaly data and their impact on prediction accuracy -- Permanent GPS networks in Italy: analysis of time series noise -- VADASE: state of the art and new developments of a third way to GNSS Seismology -- On the spatial resolution of homogeneous isotropic filters on the sphere -- On time-variable seasonal signals: comparison of SSA and Kalman filtering based approach -- Extensive analysis of IGS REPRO1 coordinate time series -- Part III Geopotential modeling, boundary value problems and height systems -- Determination of W0 from the GOCE measurements using the method of fundamental solutions -- Combination of GOCE gravity gradients in regional gravity field modelling using radial basis functions -- Rosborough representation in satellite gravimetry -- Combining Different Types of Gravity Observations in Regional Gravity Modeling in Spherical Radial Basis Functions -- Height Datum Unification by Means of the GBVP Approach Using Tide Gauges -- Computation of Zenith Total Delay Correction Fields using Ground-Based GNSS -- Rigorous interpolation of atmospheric state parameters for ray-traced tropospheric delays -- Comparison of different techniques for tropospheric wet delay retrieval over South America and surrounding oceans -- Part V Gravity field mapping methodology from GRACE and future gravity missions -- The role of position information for the analysis of K-Band data - experiences from GRACE and GOCE for GRAIL gravity field recovery -- Gravity field mapping from GRACE: different approaches - same results? -- The effect of pseudo-stochastic orbit parameters on GRACE monthly gravity fields - insights from lumped coefficients -- On an iterative approach to solving the nonlinear satellite-fixed geodetic boundary-value problem -- An OpenCL implementation of ellipsoidal harmonics -- A remark on the computation of the gravitational potential of masses with linearly varying density -- The observation equation of spirit leveling in Molodensky’s context -- Reference station weighting and frame optimality in minimally constrained networks -- Atmospheric loading and mass variation effects on the SLR-defined geocenter -- Part VIII Digital Terrain Modeling, Synthetic Aperture Radar and new sensors: theory and methods -- Radargrammetric Digital Surface Models Generation from High Resolution Satellite SAR Imagery: Methodology and Case Studies -- Principles and applications of polarimetric SAR tomography for the characterization of complex environments -- Merging local DTMs: methodological problems and practical solutions on heli-dem case study -- Part IX Inverse modeling, estimation theory -- Single-Epoch GNSS Array Integrity: an Analytical Study -- Global to local Moho estimate based on GOCE geopotential model and local gravity data -- An overview of adjustment methods for mixed additive and multiplicative random error models -- Cycle slip detection and correction for heading determination with low-cost GPS/ INS receivers -- Adjusting the errors-in-variables model: linearized least-squares vs. nonlinear total least-squares -- Multivariate GNSS Attitude Integrity: the Role of Affine Constraints -- Integrating geological prior information into the inverse gravimetric problem: the Bayesian approach -- Effects of Different Objective Functions in Inequality Constrained and Rank-Deficient Least-Squares Problems
    Description / Table of Contents: This volume contains the proceedings of the VIII Hotine-Marussi Symposium on Mathematical Geodesy, which was held June 17 to 21, 2013, in Rome, Italy. Since 2006 the series of Hotine-Marussi Symposia is under the responsibility of the InterCommission Committee on Theory (ICCT), a cross-commission entity within the International Association of Geodesy (IAG). The overall goal of the Hotine-Marussi Symposia has always been the advancement of theoretical geodesy. The 39 papers in these proceedings areindeed testimony to the width and vibrancy of theoretical geodesy. The Symposium was organized in 8 topical sessions reflecting all branches of geodesy: from geodetic data analysis through potential field modeling to estimation theory. Also theoretical aspects of reference frames and of novel sensors were covered. During a special session at the AccademiaNazionaledeiLinceiFernando Sansò was put into the spotlight in order to acknowledge his long-term commitment and dedication as the driving force behind the series of Hotine-Marussi Symposia over the past decades
    Type of Medium: Monograph available for loan
    Pages: XIV, 340 S.
    Edition: 1st ed. 2016
    Edition: Online edition Springer eBook Collection. Earth and Environmental Science
    ISBN: 9783319245485
    Series Statement: International Association of Geodesy Symposia 142
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    Language: English
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  • 5
    Call number: 6/M 20.94107
    In: International Association of Geodesy Symposia, 150
    Description / Table of Contents: Part I: Gravity Field Modelling and Height Systems -- Orbit Optimization for Future Satellite Gravity Field Missions: Influence of the Time Variable Gravity Field Models in a Genetic Algorithm Approach. Comparison of Criteria for the Identification of Correlated Orders in GRACE Spherical Harmonic Coefficients -- Second- and Third-Order Derivatives of the Somigliana-Pizzetti Reference Gravity Field -- On the Advantage of Normal Heights -- Green’s Function Method Extended by Successive Approximations and Applied to Earth’s Gravity Field Recovery -- On Combining the Directional Solutions of the Gravitational Curvature Boundary-Value Problem -- Part II: Theory of Modern Geodetic Reference Frames -- Review of Reference Frame Representations for a Deformable Earth -- Impacts of the LARES and LARES-2 Satellite Missions on the SLR Terrestrial Reference Frame -- Permanent GNSS Network Optimization Considering Tectonic Motions -- Part III: Estimation Theory and Inverse Problems in Geodesy -- Adjustment of Gauss-Helmert Models with Autoregressive and Student Errors -- How Abnormal Are the PDFs of the DIA Method: A Quality Description in the Context of GNSS -- Controlling the BiasWithin Free Geodetic Networks -- Regularized Solutions of the Two Layers Inverse Gravimetric Problem in the Space of Bounded Variation Functions -- Converted Total Least Squares Method and Gauss-Helmert Model with Applications to Coordinate Transformations -- A Bayesian Nonlinear Regression Model Based on t-Distributed Errors -- The GNSS for Meteorology (G4M) Procedure and Its Application to Four Significant Weather Events -- Part IV: Advanced Numerical Methods in Geodesy -- Modeling the Gravitational Field by Using CFD Techniques -- Surface Loading of a Self-Gravitating, Laterally Heterogeneous Elastic Sphere: Preliminary Result for the 2D Case -- Using Structural Risk Minimization to Determine the Optimal Complexity of B-Spline Surfaces for Modelling Correlated Point Cloud Data -- On the Numerical Implementation of a Perturbation Method for Satellite Gravity Mapping -- Part V: Geodetic Data Analysis -- Non-Recursive Representation of an Autoregressive Process Within the Magic Square -- A Bootstrap Approach to Testing for Time-Variability of AR Process Coefficients in Regression Time Series with t-Distributed White Noise Components -- Identification of Suspicious Data for Robust Estimation of Stochastic Processes -- Quality and Distribution of Terrestrial Gravity Data for Precise Regional Geoid Modeling: A Generalized Setup -- Part VI: Interactions of Geodesy and Mathematics -- Geodesy and Mathematics: Interactions, Acquisitions, and Open Problems.
    Description / Table of Contents: This volume gathers the proceedings of the IX Hotine-Marussi Symposium on Mathematical Geodesy, which was held from 18 to 22 June 2018 at the Faculty of Civil and Industrial Engineering, Sapienza University of Rome, Italy. Since 2006, the Hotine-Marussi Symposia series has been produced under the auspices of the Inter-Commission Committee on Theory (ICCT) within the International Association of Geodesy (IAG). The ICCT has organized the last four Hotine-Marussi Symposia, held in Wuhan (2006) and Rome (2009, 2013 and 2018). The overall goal of the ICCT and Hotine-Marussi Symposia has always been to advance geodetic theory, as reflected in the 25 peer-reviewed research articles presented here. The IX Hotine-Marussi Symposium was divided into 10 topical sessions covering all aspects of geodetic theory including reference frames, gravity field modelling, adjustment theory, atmosphere, time series analysis and advanced numerical methods. In total 118 participants attended the Symposium and delivered 82 oral and 37 poster presentations. During a special session at the Accademia Nazionale deiLincei, the oldest scientific academy in the world, six invited speakers discussed interactions of geodesy with oceanography, glaciology, atmospheric research, mathematics, Earth science and seismology.
    Type of Medium: Monograph available for loan
    Pages: XI, 256 p. 101 illus., 84 illus. in color.
    Edition: 1st ed. 2021.
    ISBN: 9783030542672
    Series Statement: International Association of Geodesy Symposia 151
    Language: English
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  • 6
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Methods of global spherical harmonic analysis of discrete data on a sphere are placed in a historical context. The paper concentrates on the loss of orthogonality in the direction of latitude, due to the transition from continuous to discretized functions. Special attention is paid to Neumann's (1838) solution to this problem. By recasting the formulae of spherical harmonic analysis into matrix-vector notation, both least-squares solutions and quadrature methods are represented in a general framework of weighted least squares. It is also shown that the two-step formulation of global spherical harmonic computation was applied already by Neumann (1838) and Gauss (1839). Computational modifications to Neumann's method are reviewed as well.
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Journal of geodesy 70 (1996), S. 224-232 
    ISSN: 1432-1394
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying
    Notes: Abstract A method is presented for performing global spherical harmonic computation by two-dimensional Fourier transformations. The method goes back to old literature (Schuster 1902) and tackles the problem of non-orthogonality of Legendre-functions, when discretized on an equi-angular grid. Both analysis and synthesis relations are presented, which link the spherical harmonic spectrum to a two-dimensional Fourier spectrum. As an alternative, certain functions of co-latitude are introduced, which are orthogonal to discretized Legendre functions. Several independent Fourier approaches for spherical harmonic computation fit into our general scheme.
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  • 8
    Publication Date: 2019-11-02
    Description: GRACE satellites have detected regionalscale preseismic, coseismic, and postseismic gravity changes associated with great earthquakes during the GRACE era (20022017). Earthquakes also excite globalscale transient gravity changes associated with free oscillations that may be discerned for a few days. In this study, we examine such global gravity changes due to Earth's free oscillations and quantify how they affect GRACE measurements. We employ the normal mode formalism to synthesize the global gravity changes after the 2004 Sumatra earthquake and simulate the (gravitational) free oscillation signals manifested in the GRACE Kband ranging (KBR) measurements. Using the Kaula orbit perturbation theory, we show how GRACE intersatellite distances are perturbed through a complex coupling of eigenfrequencies of the normal modes with the Earth's rotation rate and the GRACE satellites' orbital frequency. It is found that a few gravest normal modes can generate rangerate perturbations as large as 0.2 m/s, which are comparable to actual errors of GRACE KBR ranging and accelerometer instruments. Wavelet timefrequency analysis of the GRACE KBR residual data in December 2004 reveals the existence of a significant transient signal after the 2004 Sumatra earthquake. This transient signal is characterized by a frequency of ~0.022 mHz that could be potentially associated with the largest excitation due to the football mode of the Earth's free oscillation. However, the results are also affected by lowfrequency noise of the GRACE accelerometers. Improved spaceborne gravitational instrumentation may open new opportunities to study the Earth's interior and earthquakes independently from global seismological analysis.
    Keywords: Geosciences (General)
    Type: GSFC-E-DAA-TN74011 , Journal of Geophysical Research. Solid Earth (ISSN 2169-9356) (e-ISSN 2169-9313); 124; 7; 7483-7503
    Format: application/pdf
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  • 9
    Publication Date: 2003-01-01
    Print ISSN: 0038-6308
    Electronic ISSN: 1572-9672
    Topics: Physics
    Published by Springer
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  • 10
    Publication Date: 2003-01-01
    Print ISSN: 0038-6308
    Electronic ISSN: 1572-9672
    Topics: Physics
    Published by Springer
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