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Determination of the Sea Level Height and Sea Surface Topography in the China Sea and Neighbourby T/P Altimeter Data

Chen Junyong; Li Jiancheng;Chao Dingbo(National Bureau of Surveying and Mapping, Baiwanzhuang, Beijing,100830)  
This paper deals with the determination of the sea level height and seasurface topography in the china sea and neighbour by TOPOX/POSEIDON (T/P)satellite altimeter data. The data of T/P 59~82 'cycles covering 83th~ 311thdays in1994 are processed. The data of 59~82 cycles are divided into two parts,which haverespectively been used to estimate the sea level height and to analyze the sea levelchanges. The obtained results are compared with the sea level heights estimated byBasic and Rapp in 1992 Using the combined solutions of Geos - 3, Seasat, Geosat,and ETOPOSU bathymeter data. Results of the 30' × 30' mean sea level heights areobtained by the Shepard curve fitting method. Taking respectively the OSU 91 andthe WDM 94 earth gravity field models as the reference gravith field,the 30' × 30'mean sea surface topography is computed.
【Fund】: 国家自然科学基金,国家测绘局测绘科技发展基金
【CateGory Index】: P229
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