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  • 1
    Call number: 6/M 95.0478
    In: International Association of Geodesy symposia
    Type of Medium: Monograph available for loan
    Pages: XIII, 656 S.
    ISBN: 3540592040
    Series Statement: International Association of Geodesy symposia 113
    Classification:
    A.1.1.
    Language: English
    Location: Reading room
    Branch Library: GFZ Library
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  • 2
    Call number: AWI G8-96-0126
    In: International Association of Geodesy symposia
    Description / Table of Contents: Contents: IAG Opening Address. - Session 1 Progress in Gravity Instrumentation. - An Ocean Bottom Absolute Gravity Meter. - Session 2 Intercomparison Campaigns. - Problems of Gravimeter Calibration in High Precision Gravimetry. - Intercomparison of IMGC Absolute and GWR Superconducting Gravimeters. - Session 3 Standards, Networks, Data Bases and Software. - British Precise Gravity Network. - Large Scale Absolute Gravity Control in South America - JILAG-3 Campaigns 1988 - 1991. - Gravity Variations in Microgravity Networks in Central Italy. - British and French Gravity Datums Connected via the Channel Tunnel. - Unified Gravity Network of the Czech Republic, Slovakia and Hungary. - The Adjustment of the Unified European Gravity Network 1994 (UEGN 94). - Worldwide Synthetic Gravity Tide Parameters. - Gravity Anomalies for the Southern Part of Baltic Sea and their Statistics. - Session 4 Space Gradiometry and Airborne Gravimetry. - Global Gravity Field Recovery by Use of STEP Observations (Extended Abstract). - Solving the STEP-Observation Equation Using Banach's Fixed-Point Principle. - Some Unsolved Problems in Airborne Gravimetry. - State-of-the-Art and Future Sensor Technology for Airborne Gravimetry. - Fundamentals and Applications of Digital Filtering in Airborne Gravimetry. - GPS Software Development for Airborne Gravimetry and First Results. - Accelerometer/GPS Integration for Strapdown Airborne Gravimetry: First Test Results. - State-of-the-Art Airborne Gravimetry. - A Survey of Worldwide Research Activities on Airborne Gravimetry - Open and Solved Problems - (ExtendedAbstract). - Session 5 Geophysical Inversion of Gravity and Geoid. - Two Branches of the Newton Potential and Geoid. - Geodetic and Geophysical Inverse Gravimetric Problem, the Most Adequate Solution and the Information Content. - A New Approach to Approximate the Earth's Gravity Field. - The Maximum Entropy Geoid - A Solution for an Internal Level Surface. - Upward Continuation to the Brillouin Level of the Romanian Gravity Map. - Geoid Undulation Caused by the Heterogeneity of the Litosphere and Mantle in Qinghai-Xizang Plateau, China. - Theoretical Background of the Vening Meinesz Isostatic Model. - Computation of the Moho Depths from Gravity Data in the Ross Sea (Antarctica). - Using the Geophysical Inversion of the Gravity Data to Explain the Crustal Structure of South-East China. - Covariance Functions Set Derived from Radial Multipoles Potentials: Theory and Some Results for Regional Gravity Field in Central Europe. - Session 6 Altimetry. - A Uniform Approach to the Estimation Problems of Satellite Altimetry. - Gravity Disturbances from GEOSAT Data and Forward Geopotential Models in the Labrador Sea. - A New Approach to Sea Surface Topography Estimation. - D-PAF Mean Sea Surfaces and High Resolution Gravity Field Models Based on ERS-1 Altimeter Data. - A Datum Defect and Spectral Analysis in Regional Cross-over Adjustments of SatelliteAltimeter Data. - Long-Term Vertical Control in Satellite Altimetry, Deficiencies and Concepts. - Gravity and Geoid in the Mediterranean from a Common Adjustment of ERS-1 and TOPEX Altimeter Data. - First Analysis of ERS-1 Altimeter Data in the Red Sea Area. - The Use of Transponders in Altimetry. - Session 7 International Projects and Advanced Techniques. - Comparison of Geopotential Recovery Capabilities of Some Future Satellite Missions. - A Joint GSFC/DMA Project for Improving the Model of the Earth's Gravitational Field. - European Gravimetric Geoid: Status Report 1994. - . - Problems with Geoid Evaluations in South East Asia. - Height Comparisons on the Australian National GPS Network (ANN): First Results. - Geoid Computations in Taiwan. - The Local Geoid Determination in China - The Combination of Nation-wide Network of GPS Levelling with that of Astro-Gravimetric Levelling (Abstract). - Parallel Line Data Gridding Using Radon Domain Information. - A Comparison of Stokes' Numerical Integration and Collocation, and a New Combination Technique (Abstract). - Does the Spherical Approximation Affect the Datum Transformation?. - Non Tidal Gravity Variations and Geodynamic Processes. - A Comparison of Geoid and Quasigeoid Modeling Methods in Rough Topography. - Dynamics of the Adriatic Microplate and the Eastern Alps. - Session 8 The Geoid in Europe. - Using High Precision GPS to Aid Absolute Geoid Datum Definition. - Geoid Determination by GPS and Levelling. - How Close are we to a Centimetric Geoid?. - Basic Relations for Evaluating the Global and Regional Quasigeoid Heights on the Base of Gravity Data and a Global Model of the Geopotential. - Determination of a Gravimetric Geoid Solution for South Korea. - Geoid Determination and Levelling by GPS: Some Experiments on a Test Network. - Data Preprocessing toward a South American Geoid. - The Hungarian Contribution to the Determination of a Precise European Reference Geoid. - Test of Collocation Models for the Swiss Geoid Computation. - Towards a High Precision Geoid for Egypt. - Estonian Geodetic and Gravimetric Networks and Geoid Undulation. - The Total Terrain Effect in the Modified Stokes' Formula. - Geoid in the West Ukraine Area Derived by Means of Non-Central Multipole Analysis Technique. - Tidal Models of the Mediterranean Sea. Main Diurnal and Semidiurnal Constituents. - Global Geopotential Models and Gravity Data for the Territory of Romania. - Gravity Field Determination in Croatia - Status Report. - Author Index.
    Description / Table of Contents: This volume discusses recent advances and future prospects in the exploration of the gravity field. Both theoretical and practical aspects, ranging from gravity instrumentation, space and airborne gradiometry, satellite altimetry, the presentation of international measurement campaigns and projects, networks and gravity field-related data bases and software, to geophysical inversion techniques and recent undertakings such as the determination of the geoid in Europe, are dealt with.
    Type of Medium: Monograph available for loan
    Pages: XIII, 656 S. : Ill., graph. Darst., Kt.
    ISBN: 3540592040
    Series Statement: International Association of Geodesy symposia 113
    Location: AWI Reading room
    Branch Library: AWI Library
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  • 3
    Call number: M 18.91455
    Type of Medium: Monograph available for loan
    Pages: 449 S. : Ill., graph. Darst., Kt. , S. 159-608
    ISBN: 0006-6729
    Series Statement: Bollettino di geofisica teorica ed applicata 40, 3-4
    Note: Table of contents --- C. Morelli: The contributions of the International Gravimetric Commission (IGC) to global surface-gravity determinations // pp. 165-177 --- C Kotsakis and M. G. Sideris: Study of the gravity field spectrum in Canada in view of cm-geoid determination // pp. 179-188 --- S.D. Pagiatakis, D. Fraser, K. McEwen, A. K. Goodacre and M. Veronneau: Topographic mass density and gravimetric geoid modelling // pp. 189-194 --- H. Denker and I.N. Tziavos: Investigation of the Molodensky series terms for terrain reduced gravity field data // pp. 195-203 --- S.A. Benhamed Daho and S. Kahlouche: Gravimetry data validation in Algeria // pp. 205-210 --- M. Mojzeš and J. Janák: New gravimetric quasigeoid of Slovakia // pp. 211-217 --- I.N. Tziavos, R. Forsberg and M.G. Sideris : Marine gravity field recovery by combining satellite altimetry and shipborne gravimetry // pp. 219-226 --- G. Fotopopulos, C. Kotsakis and M.G. Sideris: Development and evaluation of a new Canadian geoid model // pp. 227-238 --- C. Jekeli: A further evaluation of the EG M96 geopotential model based on deflections of the vertical // pp. 239-243 --- N.K. Pavlis, C.M. Cox, E.C. Pavlis and F.G. Lemoine: Intercomparison and evaluation of some contemporary global geopotential models // pp. 245-254 --- J.C. Catalao and M.J. Sevilla: Comparison between EGM96 and FCUL96B tailored geopotential model for the north-east Atlantic // pp. 255-259 --- J. Kusche, K.H. Ilk and S. Rudolph: Two-step data analysis for future satellite gravity field solutions: a simulation study // pp. 261-266 --- C. Jekeli: An analysis of geopotential difference determination from satellite-to-satellite tracking // pp. 267-272 --- J. Verdun , R. Bayer , E. Klingelé , M. Cerniar , M. Cocard , A. Geiger and M. Halliday: The Alpine Swiss French Airborne Gravimetry Project (ASFAG Project) // pp. 273-276 --- A. Albertella, F. Migliaccio and F. Sansò: New simulations for the spaceborne gravimetry inversion // pp. 277-283 --- Ch. Reigber, P. Schwintzer and H. Lühr: The CHAMP geopotential mission // pp. 285-289 --- B.D. Tapley and C. Reigber: GRACE: a satellite-to-satellite tracking geopotential mapping mission // pp. 291-291 --- S. Bettadpur, J.R. Kim and B.D. Tapley: Results from simulations studies of the GRACE mission // pp. 293-293 --- M. Aguirre-Martinez and S. Cesare: GOCE mission concept, error derivation and performances // pp. 295-302 --- H. Oberndorfer, R. Orobantu, C. Gerlach, J. Muller, R. Rummel, N. Sneetuw, R. Koop, P. Visser, P. Hoyng, A. Selig and M. Smit: GOCE sensor combination and error analysis // pp. 303-307 --- G. Balmino, F. Perosanz, R. Rummel, N. Sneeuw and H. Sunkel: CHAMP, GRACE and GOCE: mission concepts and simulations // pp. 309-319 --- P. Touboul, E. Willemenot, B. Foulon and V. Josselin: Accelerometers for CHAMP, GRACE and GOCE space missions: synergy and evolution // pp. 321-327 --- Ch. Reigber, F. Barthelmes, H. Greiner-Mai, Th. Gruber, H. Jochmann and J. Wünsch: Temporal gravity field variations from oceanic, atmospheric and inner core mass redistributions and their sensitivity to new gravity missions CHAMP and GRACE // pp. 329-340 --- R. Barzaghi, A. Borghi, L. De Stefani, A. Piatti and G. Venuti: SST estimation using collocation: method refinements and seasonal variability // pp. 341-346 --- R. Blinken and K.R. Koch: Estimation of geoid and sea surface topography from satellite altimetry by the adjoint method // pp. 347-352 --- R. Devoti, V. Luceri, P. Rutigliano, C. Sciarretta and G. Bianco: Time series of low degree zonals obtained analyzing different geodetic satellites // pp. 353-358 --- N.K. Pavlis, C.M. Cox, Y.M. Wang and F.G. Lemoine: Further analyses towards the introduction of ocean circulation model information into geopotential solutions // pp. 359-367 --- O.B. Andersen, P. Knudsen, S. Kenyon and R. Trimmer: Recent improvement in the KMS global marine gravity field // pp. 369-377 --- T. Bašic and M. Brkic: The latest efforts in geoid determination in Croatia // pp. 379-386 --- M. Rentsch, Th. Gruber and M. Anzenhofer: A global grid of high-resolution gravity anomalies based on Geosat and ERS-1 altimetry // pp. 387-394 --- G. Rodríguez, M.J. Sevilla and C. De Toro: Crossover analysis in the Canary-Azores region of ERS-1 altimetric data // pp. 395-401 --- G. Tóth, J. Ádám, I.N. Tziavos and V.D. Andritsanos: Gravimetric geoid computations in Hungary and the sorrounding area // pp. 403-409 --- D. Arabelos, S.D. Spatalas, I.N. Tziavos, M.J. Sevilla, G. Rodriguez, C. De Toro, J. Catalao and J. Calvao: A new high resolution geoid for the Iberian Atlantic continental shelf area // pp. 411-419 --- D. Dreher, M.F. Lalancette and M. Maia: Roughness of the gravity and seafloor topography used to infer geodynamic settings // pp. 421-426 --- O.B. Andersen: Shallow water tidal determination from altimetry - the M4 constituent // pp. 427-437 --- P. Knudsen and O. Andersen: A global high resolution mean sea surface from multi mission satellite altimetry // pp. 439-443 --- P. Holota: A construction of Galerkin’ smatrix in quasi-geoid determination // pp. 445-450 --- M.G. Doufexopoulou and V.N. Pagounis: Investigation of raw variance and variability spectra from non gravimetric geoidal signals // pp. 451-460 --- G. Gerstbach: Inversion of vertical deflection data by the program GREMMO // pp. 461-468 --- C. Braitenberg and M. Zadro: Iterative 3D gravity inversion with integration of seismologic data // pp. 469-475 --- V. Baiocchi, M. Crespi and F. Riguzzi: Mean density map for the Italian region by GIS techniques // pp. 477-482 --- V. Josselin, E. Willemenot and P. Touboul: Digital electronics for electrostatic accelerometers interest for high resolution and in-orbit calibration // pp. 483-486 --- J.M. Brown, T.M. Niebauer and F.J. Klopping: Results from a new interferometric ballistic differential gravity meter // pp. 487-496 --- G. Berrino, G. Cerrutti, G. Corrado, P. De Maria and U. Riccardi: Gravity studies on active Italian volcanoes: a comparison between absolute and relative gravimetry // pp. 497-510 --- Y. Fukuda, T. Sato, Y. Tamura and Y. Aoyama: The effects of sea-surface height variations on the long-period gravity changes // pp. 511-517 --- M. Amalvict, J. Hinderer and J.P. Boy: A comparative analysis between an absolute gravimeter (FG5-206) and a superconducting gravimeter ( GWR CO26) in Strasbourg: new results on calibration and long-term gravity changes // pp. 519-525 --- E. Willemenot, P.Touboul and V. Josselin: Gradiometer calibration and performance verification: GOCE approach // pp. 527-532 --- M.F. Lalancette-Le Quentrec, B. Simon, D. Orseau, N. Florisch, M. Llubes, m. Amalvict and J. Hinderer: Ocean loading and crustal deformation in Bretagne (France ) an experiment involving differential GPS, gravimetry and tide gauges // pp. 533-536 --- Y. Kuroishi: Improvement of Japanese geoid with lD- FFT method and its comparison with altimetry-derived geoid // pp. 537-543 --- N. Kühtreiber: Combining gravity anomalies and deflections of the vertical for a precise Austrian geoid // pp. 545-553 --- M. Kuhn: The influence of different crust models on the gravity field of the Earth // pp. 555-562 --- H.A. Abd-Elmotaal: Comparison among different geoid solutions for the Egyptian south-western desert using FFT technique // pp. 563-569 --- J. Ádám: Difference between geoid undulation and quasigeoid height in Hungary // pp. 571-575 --- C. Braitenberg and M. Zadro: The Grotta Gigante horizontal pendulums - instrumentation and observations // pp. 577-582 --- P. Baldi, G. Casula, J. Hinderer and M. Amalvict: Calibration of a superconducting gravimeter: a comparison between the mass attraction method and the use of FG5 absolute gravity measurements // pp. 583-588 --- L. Biagi, R. De Stefano, F. Sansó and C. Sciarretta: RTC and density variations in the estimation of local geoids // pp. 589-595 --- A. De Bruijne, R. Haagmans and E. De M
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 4
    Publication Date: 2007-10-08
    Description: Crustal stress can be monitored by acoustic emissions (AE, ultrasound), which give an indication of whether a physical system is subject to stress, either of tectonic or endogenous origin. AE intensity critically depends on the damping of the signal; however, AE signals are clear indicators of the fatigue state of the crustal structures constituting the AE source. This aspect can be studied by fractal analysis of AE time series; these are, however, not suited for earthquake forecasting, as they only denote a changing state involving large lithospheric volumes. Several case histories from Italy show that an increased high-frequency AE activity (200 kHz) occurs approximately seven to eight months in advance of large earthquakes that affect areas of a few hundred kilometres radius, and an increased low-frequency AE activity (at 25 kHz) is observed several weeks in advance. Low-frequency AE also correlate with soil exhalation (water-well chemistry) and CH4, whereas fractal analysis of AE signals recorded close to a future' epicentral area gives a clear indication of the evolution of the system from about two months before the mainshock. This suggests that systematic monitoring of crustal stress variations may be used for assessing the time evolution of seismic activity.
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  • 5
    Publication Date: 2007-10-08
    Description: Different observational techniques are compared in order to investigate possible correlations in seismic activity. The study site is the island of Kefallina (Greece), where measurements available included (1) DInSAR, DGPS, and DEM data, (2) soil exhalation measured by monitoring Radon (Rn) well content, and (3) acoustic emissions (AE) at high and low frequency (point-like records with high temporal resolution). AE records provide: (1) relative time variation of the applied stress intensity and (2) the state of fatigue of stressed rock volumes, the AE source. Our results indicate that the large spatial scale (poor time resolution) may be considered quite satisfactory, whereas fractal analysis of the AE time series displayed some discrepancies when compared to analogous investigations in the Italian Peninsula. Therefore, some refinement is needed in order to reach more precise interpretations of the relevant information available with this kind of data. However, both sets of observations appear in agreement with each other, although more exhaustive investigations would require a suitable array of point-like AE and Rn (or other) measuring sites, as well as longer data series. The latter are particularly helpful for detailed interpretations of the different occurrences within tectonically complex settings where crustal stress crises are marked by various types of geological phenomena.
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  • 6
    Publication Date: 2011-07-28
    Description: The lithosphere–asthenosphere system of the Italic region in terms of shear-velocity and density distribution with depth is suitable to investigate the geodynamic context of the region. The velocity structure is obtained through nonlinear inversion of dispersion curves compiled from surface wave tomography on cells 1° × 1° and a smoothing optimization method to choose the representative cellular model, whose layering is used as fixed ( a priori ) information to obtain a density model by means of linear inversion of gravimetric data. Seismicity and heat flow are used as independent constraints in outlining both the crustal and the seismic lid thickness; the nonlinear moment tensor inversion of recent damaging earthquakes allows some insight in the ongoing kinematic processes. Asymmetry between west-directed (Apennines) and east-directed (Alps, Dinarides) subductions is a robust feature of the velocity model, while density model reveals that slabs are not denser than the ambient mantle, thus supplies no evidence for slab pull. Terra Nova, 1–8, 2011
    Print ISSN: 0954-4879
    Electronic ISSN: 1365-3121
    Topics: Geosciences
    Published by Wiley
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  • 7
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  • 9
    Publication Date: 2011-07-27
    Print ISSN: 0954-4879
    Electronic ISSN: 1365-3121
    Topics: Geosciences
    Published by Wiley
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  • 10
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