联合多种卫星测高数据分析全球和中国海海平面变化

基金项目: 国家攀登计划、国家杰出青年科学基金资助项目(496 25408);国家自然科学基金资助项目(49584002)

详细信息

Mean Sea Level Variation Using Historic Satellite Altimeter Data

1 School of Geo_science and Surveying Engineering, WTUSM, 129 Luoyu Road, Wuhan, China, 430079;
2 Chinese Academy of Surveying and Mapping, 16 Beitaiping Road, Beijing, China, 100039

摘要: 利用了7年的T/P数据(第9周期至第249周期)、4年的ERS2数据(第0周期至第44周期)和Geosat精密重复任务(ERM)数据,由共线法研究了全球海平面变化和中国海域海平面变化。测高数据的逆气压改正采用了每个周期的平均大气压重新计算,对T/P和ERS2两种数据源计算的1995~1999年海平面变化作了相应的比较。
- 卫星测高数据 /
- 海平面 /
- 共线法
Abstract: Global and chinese mean sea level (MSL) variations have been analyzed using collinear method based on cycles 9 to 249 of T/P data, cycles 0 to 44 of ERS2 data as well as Geosat/ERM.The inverse barometer corrections were computed with a cycle average.The MSL variations obtained by two kinds of T/P and ERS2 data during 1995 to 1999 were compared.The conclusions were obtained as follows:①global MSL changes are arise with 0.6mm/a, however China sea MSL changes with 4mm;②The first and fourth seasonal changes of global MSL are arise, but the second and third changes decline.Thus the trends of MSL seasonal variations over China sea are contrasted to global sea.
- satellite altimeter date /
- sea level /
- collinear method