****************************************************************************** DORIS Electronic Mail Mon Nov 24 16:01:22 WET 1997 Message Number 0023 ****************************************************************************** Author: Markus Rothacher (AIUB) Subject: EGS Symposium ""PRECISE SATELLITE ORBITS FOR GEOPHYSICAL APPLICATIONS""" Dear Colleagues, We would like to draw your attention to the Symposium G4 "PRECISE SATELLITE ORBITS FOR GEOPHYSICAL APPLICATIONS" as a part of the XXIII General Assembly of the European Geophysical Society (EGS). This scientific meeting takes place in the week of April 20-24, 1998, at the Congress Center Acropolis in Nice, France. The Symposium G4 focuses on the determination of high precision satellite orbits and the use of such orbits for geophysical applications. Results showing the importance of precise orbit information (from real-time orbits for meteorology to post-processed orbits for geodynamics, Earth orientation, gravity, altimetry, etc.) in any field of geodesy and geophysics are very welcome. We would like to encourage you to contribute to this session with your studies and results. There will be three types of presentations: invited papers (30 min), contributed papers (15 min), and poster or video presentations (3-5 min oral). Poster and video presentations are very much encouraged. DEADLINE FOR RECEIPT OF ABSTRACTS IS DECEMBER 15, 1997. More details on the submission of abstracts and on all other aspects of the meeting (registration, housing, ...) may be found at the following address: http://www.copernicus.org/EGS/EGS.html EGS Office Tel. ++ 49 / 5556 1440 Max-Plank-Str. 13 Fax ++ 49 / 5556 4709 37191 Katlenburg-Lindau Germany Because this message is distributed through several mailing systems, we apologize if you receive more than one copy of this announcement. Please forward this information to colleagues that may not have obtained this e-mail. Scope of Symposium G4: Precise Satellite Orbits for Geophysical Applications ---------------------------------------------------------------------------- In the last few years more and more geophysical applications involve the processing of satellite data. In most cases the accurate knowledge of the satellite positions at any given epoch is essential for the determination of the parameters of interest to the geophysicist. Let us just mention two examples: 1) GPS users greatly benefit from the availability of high-precision orbits distributed by the IGS to compute site coordinates, atmospheric information, etc. 2) The quality of the TOPEX/Poseidon orbit is of vital importance to improve the Earth's gravity fields, to monitor the geocenter, and to derive ocean tide models. The symposium will focus on the computation of high-precision orbits for geophysical applications and their importance in geophysics. We are looking for contributions studying the impact of the orbit models and orbit quality on the estimation of geophysical parameters like the geocenter, the gravity field, earth orientation parameters, site coordinates, and parameters describing the atmosphere. Papers that assess the quality of such high-precision orbits (e.g. by comparing orbits derived using different observation techniques) are welcome, too. ------------------- We are looking forward to your participation in Nice. Sincerely yours, Markus Rothacher Richard Eanes ---------------------------------------------------------------------------- G4 Convener: Dr. Markus Rothacher Tel : ++ 41 / 31 631 85 91 Astronomical Institute Fax : ++ 41 / 31 631 38 69 University of Berne E-mail: rothacher@aiub.unibe.ch Sidlerstrasse 5 CH-3012 Berne Switzerland G4 Co-Convener: Dr. Richard Eanes Tel : ++ 1 / 512 471 7560 Research Scientist Fax : ++ 1 / 512 471 3570 Center for Space Research E-mail: eanes@csr.utexas.edu University of Texas at Austin 3925 West Braker Lane, Suite 200 Austin, Texas, 78759-5321 U.S.A. ============================================================================== [Mailed From: Pascal Willis ]