Recent geoid computations for the Hellenic area |
| |
| Institution: | 1. NASA Goddard Space Flight Center, Greenbelt, MD, USA;2. Earth System Science Interdisciplinary Center, College Park, MD, USA;3. Science Systems and Applications, Inc., Lanham, MD, USA;4. Center for Space and Remote Sensing Research, National Central University, Taoyuan, Taiwan;5. Institute of Hydrological and Oceanic Sciences, National Central University, Taoyuan, Taiwan |
| |
| Abstract: | New geoid computations for the Hellenic area are carried out using (a) gravity anomalies for the land area available from old and new data bases, and gravity data for the sea area derived from altimetry and a recent digitization of sea gravity maps, and (b) a 1km × 1km digital terrain model. The EGM96 geopotential model is used as the reference field. In order to assess the quality of the computed geoid heights in the continental area comparisons were carried out with GPS/leveling heights and the recently available European Gravimetric Geoid EGG97. In the sea area the geoid heights were compared with sea surface heights of the recent and more accurate TOPEX/POSEIDON (T/P) altimetry mission. At the end of this article the improvement of the data bases is discussed and some plans for further development in the methodological schedule are pointed out. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
