Multi-satellite Altimetry Geoid Determination In The Black Sea
Abstract
The use of multi-satellite altimetry data for optimal geoid determination in the re- gion of Black Sea is investigated and compared with data from a combination of GPS and tide gauges situated along the Bulgarian coastline. A new high-resolution multi-satellite (GEOSAT-GM, ERS1-GM, TOPEX/POSEIDON) altimetric geoid is computed by the multiple input multiple output system theory method. Two geopo- tential models, namely EGM96 and GPM98b, are implemented to test how well they model the long wavelength part of the gravity field spectrum. Topex/Poseidon data are used as control points for the resulting geoid. The altimetric heights at the tide gauge stations, are compared with the GPS and tide gauge data in order to assess their dif- ferences. A global Sea Surface Topography (SST) model is also used to test how well it models the stationery part of the SST in this region. Finally, an empirical correction surface relating the geoid model to the GPS and leveling heights is developed for the local area of the Bulgarian coastline.
- Publication:
-
EGS General Assembly Conference Abstracts
- Pub Date:
- 2002
- Bibcode:
- 2002EGSGA..27.1074G