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86 Commission 3 – Earth Rotation and Geodynamics model is performed in the Adriatic, a semi-enclosed basin in the Mediterranean Sea, by comparing model sea-surface elevation with tide-gauge and TOPEX/POSEIDON data, and model bottom pressure with that estimated from temperature and salinity observations. Using the ECCO model ocean bottom pressure data and the Green's functions approach, the non-tidal ocean loading effect has been modelled at the four GPS sites. The height series and the predicted non-tidal ocean loading are highly correlated at all four stations. A similar analysis is also presented for the superconducting gravimeter data collected at the Medicina station (ZERBINI et al. 2004). In contrast to the long-term variations in the atmosphere the high frequency band excite seismometers and gravimeters in a different manner. Acceleration power spectral densities of vertical seismic noise at the best seismic stations show a minimum near 3 mHz. This minimum is caused by a cancellation near this frequency of Newtonian attraction vs. free air and inertial effects exerted by atmospheric phenomena on the sensor mass. Simplistic models of atmospheric phenomena are used to quantify this effect and examples are shown for special atmospheric events in ZÜRN and WIELANDT (2007). References D' OREYE N., ZÜRN W.: A very high resolution long-baseline water-tube tiltmeter to record small signals in the frequency band ranging from Earth free oscillations to secular tilts, Geophys. Res. Abstr., 6, 00101 (EGU04-A-00101), 2004a. D'OREYE N., ZÜRN W.: The "wth2o" water-tube tiltmeter in the Grand Duchy of Luxemburg, Poster ETS-01-11, 15th Int. Symp. Earth Tides, Ottawa, Abstract p. 16, 2004b. D'OREYE N., ZÜRN W.: Very high resolution long-baseline watertube tiltmeter to record small signals from Earth free oscillations up to secular tilts, Rev. Sci. Instr., 76, 2, pp. 024501 1-12, 2005 D'OREYE N., ZÜRN W.: Quarter-Diurnal tides observed with a long-base water-tube tiltmeter in the Grand Duchy of Luxembourg, J. Geodynamics, 41, 175-182, 2006 FERNÁNDEZ J., TIAMPO K.F., RUNDLE J.B., JENTZSCH G.: On the interpretation of vertical gravity gradients produced by magmatic intrusions, Journal of Geodynamics, 39/5, 475- 492. doi: 10.1016/j.jog.2005.04.005, 2005. HACKNEY R., BOUSQUET R., GÖTZE H.-J., MAHATSENTE R., JAHR T., JENTZSCH G., OBERHÄNSLI R.: Geophysical and petrological applications of new-generation satellite-derived gravity data: What can and needs to be done? GOCE Workshop, 06.-08.11.2006, Potsdam, 2006. HARNISCH G., HARNISCH M.: Hydrological influences in long gravimetric data series, J. Geodynamics, 41, 276-287, 2006a HARNISCH M., HARNISCH G.: Study of long-term gravity variations based on data of the GGP co-operation, J. Geodynamics, 41, 318-325, 2006b HARNISCH G., HARNISCH M., FALK R.: Hydrological influences on the gravity variations recorded at Bad Homburg, in: Bulletin d'Information des Marées Terrestres (BIM) 142 11331-11342, 2006 HASAN SH., TROCH P., BOLL J., KRONER C.: Modeling of the hydrological effect on local gravity at Moxa, Germany, J. Hydrometeorology, 7(3), 346-354, doi: 10.1175/JHM488, 2006.1 JAHR T., JENTZSCH G., GEBAUER A.: Observations of fluid induced deformation of the upper crust of the Earth: Investigations about the large scale injection experiment at the KTB site – Germany, Bul. d’Inf. Marees Terr., 141, 11271-11276, 2006. JAHR T., JENTZSCH G., LETZ H., GEBAUER A.: Tilt Observations around the KTB-Site – Germany: Monitoring and modelling of fluid induced deformation of the upper crust of the Earth, IAG General Ass., Cairns, August 2005, 2007. JENTZSCH G., WEISE A., REY C., GERSTENECKER C.: Gravity changes and internal processes – some results obtained from observations at three volcanoes, PAGEOPH, special issue on "Geodetic and geophysical effects associated to seismic and volcanic hazards". PAGEOPH, 161, 1415-1431, 2004. JENTZSCH G., CROSSLEY D., HINDERER J., TAKEMOTO S. (Eds): Time Varying Gravimetry, GGP, and Vertical Crustal Motions, Special issue of the J. of Geodynamics, 38-3-5, 223 - 501, 2004. JENTZSCH G., CROSSLEY D., HINDERER J., TAKEMOTO S. Editorial to: JENTZSCH G., CROSSLEY D., HINDERER J., TAKEMOTO S. (Eds): Time Varying Gravimetry, GGP, and Vertical Crustal Motions, Special issue of the J. of Geodynamics, 38-3-5, 223 - 224, 2004. JENTZSCH G., Editorial, Proceedings of the 15th International Symposium on Earth Tides, Ottawa, Canada, 2–6 August 2004. J. of Geodynamics, Vol. 41, 1-3, 1-4, 2006. KRAUSE P., FINK M., KRONER C., SAUTER M., SCHOLTEN T.: Hydrological processes in a small catchment and their impact on gravimetric measurements, Proc. Headwater 2005, Bergen, CD-ROM, 2005. KRAUSE P., FINK M., KRONER C.: Soil moisture measurement and simulation and their impact on gravimetric measurements, Bull. d’Inf. Marées Terr., 142, 11377-11386, 2006. KRONER C.: Hydrological signals in the SG records at Moxa – a follow-up, Bull. d’Inf. Marées Terr., 142, 11353-11358, 2006. KRONER C.,JAHR T.: Hydrological experiments around the superconducting gravimeter at Moxa Observatory, J. Geodynam., 41, 1-3, 242-252, doi: 10.1016/j.jog.2005.08.012, 2006 KRONER C., JENTZSCH G.: Report of Activities of IAG/ETC Working Group 7: 'Analysis of Environmental Data for the Interpretation of Gravity Measurements'. Bull. d'Inf. Marées Terr., 140, 11127-11128, 2005. KRONER C., JAHR T., JENTZSCH G.: 44 Months of observations with a dual sensor superconducting gravimeter at Moxa observatory, J. Geodynam., 38, no. 3-5, 263-280, doi: 10.1016/j.jog.2004.07.012, 2004. KRONER C., DIERKS O., NEUMEYER J., WILMES H.: Analysis of records from dual sensor superconducting gravimeters, Phys. Earth Planet. Int., 153, 210-219, doi: 10.1016/j.pepi. 2005.07.002, 2005 KRONER C., JENTZSCH G.: Report of the Working Group on ‘Analysis of Environmental Data for the Interpretation of Gravity Measurements‘.Bul. d’Inf. Marees Terr., 140, 2005, 11127 - 11128, 2005. KRONER C., JAHR T., NAUJOKS M., WEISE A.: Hydrological signals in gravity observations – foe or friend? Proc. IAG General Ass., Cairns, Aug. 2005 (Hrsg. C. Rizos & P. Tregoning), Springer-Verlag, Bd. 130, 501-510, 2007. NAUJOKS M., KRONER C., JAHR T., WEISE A.: From a disturbing influence to a desired signal: Hydrological effects in gravity observations, (ext. abs.), Bull. d’Inf. Marées Terr., 142, 11359-11360, 2006.
NAUJOKS M, JAHR T., JENTZSCH G.,. KURZ J, HOFMANN Y.: Geodynamic and gravimetric modelling of earthquake swarm areas and processes, IAG General Ass., Cairns, August 2005, 2007. NEUMEYER J., SCHWINTZER P., BARTHELMES F., DIERKS O., IMANISHI Y., KRONER C., MEURERS B., SUN H. P., VIRTANEN H.: Comparison of Superconducting Gravimeter and CHAMP Satellite derived Temporal Gravity Variations, in: Earth Observations with CHAMP Results from Three Years in Orbit, Hrsg.: Reigber Ch, Lühr H, Schwintzer P, Wickert J: Springer Verlag, 31-36, 2004. NEUMEYER J., BARTHELMES F., DIERKS O., FLECHTNER F., HARNISCH M. & G., HINDERER J., IMANISHI Y., KRONER C., MEURERS B., PETROVIC S., REIGBER CH., SCHMIDT R., SCHWINTZER P., SUN H.-P., VIRTANEN H.: Combination of temporal gravity variations resulting from superconducting gravimeter recordings, GRACE satellite observations and global hydrology models, J. Geodesy, 79, 10-11, 573-585, doi:10.1007/s00190-005-0014-8, 2006. RICHTER B., ZERBINI S., MATONTI F., SIMON D.: Long-term crustal deformation monitored by gravity and space techniques at Medicina, Italy and Wettzell, Germany, Journ. Geodyn., 38, 281-292, doi:10.1016/j.jog.2004.07.013, 2004. ROMAGNOLI C., ZERBINI S., LAGO L., RICHTER B., SIMON D., DOMENICHINI F., ELMI C., GHIROTTI M.: Influence of soil consolidation and thermal expansion effects on height and gravity variations, J. Geodynamics, 35, 521-539, 2003. SIMON D.: Modelling of the gravimetric effects induced by vertical air mass shifts, Mitteilungen des Bundesamtes für Kartographie und Geodäsie, Band 21, Verlag des Bundesamtes für Kartographie und Geodäsie, Frankfurt am Main, Germany, 100 pp, 2003. SIMON D.: Gravimetric effects induced by vertical air mass shifts at Medicina (1998-2005), Wettzell, Bad Homburg, Moxa, Pecny and Wien (1998-2004), in: Bulletin d'Information des Marées Terrestres (BIM), 142, 11317-11322, 2006 SIMON D., KLÜGEL T., KRONER C.: Comparison of variations in air mass attraction derived from radiosonde data and a meteorological weather model, Bull. d’Inf. Marées Terr., 142, 11323-11330, 2006. SUN H.-P., JENTZSCH G., XU J.Q., HSU H.-T., CHEN X.-D., ZHOU J.-C.: Earth’s Free Core Nutation Determined using C032 Superconducting Gravimeter at Station Wuhan/China, Special issue of the J. of Geodynamics, 38-3-5, 451-460, 2004. TIAMPO K.F., FERNÁNDEZ J, JENTZSCH G., CHARCO M., RUNDLE J.B.: New results at Mayon, Philippines, from a joint inversion of gravity and deformation measurements, PAGEOPH, 161, No. 7, 1433-1452, 2004. B. Richter: Earth Tides and Non-tidal Gravity Field Variations 87 TIAMPO K.F., FERNÁNDEZ J., JENTZSCH G., CHARCO M., RUNDLE J.B.: Inverting for the parameters of a volcanic source using a genetic algorithm and a model for magmatic intrusion in elastic-gravitational layered earth models, Computers & Geosciences, Vol. 30, Issues 9-10, November-December 2004, Pages 985-1001, 2004. TIAMPO K.F., FERNÁNDEZ J., JENTZSCH G., CHARCO M., TIEDE C., GERSTENECKER C., CAMACHO A., RUNDLE J.B.: Elasticgravitational modeling of geodetic data in active volcanic areas,. Recent Res. Devel. Geophysics, 6, pp. 37-58. (ISBN: 81-7736-201-1), 2004. VAJDA P., BRIMICH L., JENTZSCH G., JAHR T., WEISE A.: Towards interpreting gravity changes by means of the Truncation Filtering Methodology: Mayon volcano, Philippines, case study, contribution to Geophysics and Geodesy, Vol. 34/1, 2004. WIDMER-SCHNIDRIG R:, What can Superconducting Gravimeters contribute to normal-mode seismology?, Bull. seismol. Soc. Am., 93, 1370-1380, 2003. WILMES H., BOER A., RICHTER B., HARNISCH M., HARNISCH G., HSE H., ENGELHARD G.: A new data series observed with the remote superconducting graviometer GWR R038 at the geodetic fundamental station TIGO in Concepcion (Chile), J. Geodynamics, 41, 5 – 13, 2006 ZAHRAN K.H., JENTZSCH G., SEEBER G.: World-wide synthetic tide parameters for gravity and vertical and horizontal displacements, J. Geod., DOI 10.1007/s00190-005-0460-3, 2005. ZAHRAN K.H., JENTZSCH G., SEEBER G.: Accuracy assessment of ocean tide loading computations for precise geodetic observations, J. of Geodynamics, 42, 159 – 174, 2006. ZERBINI S., MATONTI F., RAICICH F., RICHTER B., VAN DAM T.: Observing and assessing non-tidal ocean loading using ocean, continuous GPS and gravity data in the Adriatic area, Geophys. Res. Lett., 31, L23609, doi:10.1029/2004 GL021185, 2004. ZERBINI S., RICHTER B., ROCCA F., VAN DAM T., MATONTI F. (2007): A Combination of Space and Terrestrial Geodetic Techniques to Monitor Land Subsidence: Case Study, the Southeastern Po Plain, Italy, J. Geophys. Res., 112, B05401, doi:10.1029/2006JB004338. ZÜRN W., WIDMER-SCHNIDRIG R.: Vertical acceleration noise at seismic frequencies, Cah. Centre Europ. Geodyn. Seismol., 22, 123 – 127, 2003. ZÜRN W.: Fifth-Force Experiments in Retrospect and Newton's Big G, Mitteilungen der DGG, Sonderheft I, 2004, 48 – 53, 2004. ZÜRN W., WIELANDT E.: On the minimum of vertical seismic noise near 3 mHz, Geophys. J. Int., 168, 647 -658, 2007
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DEUTSCHE GEODÄTISCHE KOMMISSION be
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Adresse des Herausgebers / Address
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Contents Commission 1 - Reference F
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COMMISSION 1 REFERENCE FRAMES 7
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10 Commission 1 - Reference Frames
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Page 16 and 17:
14 Introduction Celestial Reference
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24 Introduction The contributions o
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28 Satellite altimetry provides a p
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COMMISSION 2 GRAVITY FIELD 33
Page 38 and 39: 36 Commission 2 - Gravity Field res
Page 40 and 41: 38 Commission 2 - Gravity Field aut
Page 42 and 43: 40 Commission 2 - Gravity Field in
Page 44 and 45: 42 Commission 2 - Gravity Field sho
Page 46 and 47: 44 Commission 2 - Gravity Field KRE
Page 48 and 49: 46 Commission 2 - Gravity Field Dev
Page 50 and 51: 48 Commission 2 - Gravity Field ILK
Page 52 and 53: 50 Introduction In the reporting pe
Page 54 and 55: 52 Commission 2 - Gravity Field of
Page 56 and 57: 54 Commission 2 - Gravity Field GRU
Page 58 and 59: 56 Commission 2 - Gravity Field LEM
Page 60 and 61: 58 1. Modelling Techniques Fundamen
Page 62 and 63: 60 Commission 2 - Gravity Field BUN
Page 64 and 65: 62 Commission 2 - Gravity Field Geo
Page 66 and 67: 64 Commission 2 - Gravity Field SCH
Page 68 and 69: 66 Commission 2 - Gravity Field gra
Page 70 and 71: 68 Commission 2 - Gravity Field LOM
Page 72 and 73: 70 Introduction The four years sinc
Page 74 and 75: 72 Commission 2 - Gravity Field met
Page 76 and 77: 74 Commission 2 - Gravity Field SCH
Page 79 and 80: Introduction The determination of E
Page 81 and 82: Introduction German investigations
Page 83 and 84: In Europe, there are detailed inves
Page 85 and 86: SASGEN, I., MULVANEY R., KLEMANN V.
Page 87: enabling us to map the behaviour of
Page 91 and 92: nental hydrosphere. Thus, interpret
Page 93 and 94: M. Thomas, M. Soffel, H. Drewes: Ea
Page 95 and 96: M. Thomas, M. Soffel, H. Drewes: Ea
Page 97 and 98: observed that the resulting masscha
Page 99 and 100: Since 2001, the IERS Central Bureau
Page 101 and 102: COMMISSION 4 POSITIONING AND APPLIC
Page 103 and 104: The main highlights in the past fou
Page 105 and 106: VLBI Space Geodetic Techniques (VLB
Page 107 and 108: A. Nothnagel: Space Geodetic Techni
Page 109 and 110: A. Nothnagel: Space Geodetic Techni
Page 111 and 112: also be able to track the broadband
Page 113 and 114: CHEN X., DEKING A., LANDAU H., STOL
Page 115 and 116: SEEBER G.: Beitrag für „Directio
Page 117 and 118: 2003, WÜBBENA et al. 2006a) or in
Page 119 and 120: Permanent GNSS Networks, including
Page 121 and 122: G. Weber, M. Becker, J. Ihde: Perma
Page 123 and 124: G. Weber, M. Becker, J. Ihde: Perma
Page 125 and 126: General remarks The continuous and
Page 127 and 128: Introduction GNSS Based Sounding of
Page 129 and 130: J. Wickert, N. Jakowski: GNSS Based
Page 131 and 132: J. Wickert, N. Jakowski: GNSS Based
Page 133 and 134: References ADAM N.: TerraFirma Qual
Page 135 and 136: Introduction The period 2003 - 2007
Page 137 and 138: procedures and surveying instrument
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Motivation During the last years, n
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AVILA-RODRIGUEZ J.-A., PANY T., EIS
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SEIFERT A., KLEUSBERG A. (2003): An
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IAG PROJECTS 143
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The Global Geodetic Observing Syste
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KRÜGEL M., TESMER V., ANGERMANN D.
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Inter-commission Committees (ICC) A
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After the restructuring of the IAG
Page 155 and 156:
Introduction Physical Aspects of Ge
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H. Drewes, M. Soffel: Physical Aspe
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W. Keller, W. Freeden: Mathematical
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W. Keller, W. Freeden: Mathematical
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H. Kutterer, W.-D. Schuh: Quality M
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B. ICC on Planetary Geodesy (ICCPG)
Page 171 and 172:
Introduction Various space missions
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Photogrammetrie, Fernerkundung und
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