海洋卫星测高技术和海洋地形试验TOPEX卫星计划

doi:10.11867/j.issn.1001-8166.1997.06.0528

地球科学进展 ›› 1997, Vol. 12 ›› Issue (6): 528 -534. doi: 10.11867/j.issn.1001-8166.1997.06.0528

董晓军，黄城

中国科学院上海天文台上海 200030

收稿日期:1997-01-03 修回日期:1997-03-07 出版日期:1997-12-01
通讯作者: 董晓军,男,1969年3月出生,在职博士研究生,主要从事海洋测高和卫星动力学的研究。
基金资助:
国家自然科学基金项目“卫星测高在中国近海地球物理和海洋动力环境中的应用”(项目编号:49634140)资助。

SATELLITE ALTIMETRY AND TOPEX MISSION

DONG Xiaojun,HUANG Cheng

Shanghai Astronomical Observatory,the Chinese Academy of Sciences,Shanghai 230030

Received:1997-01-03 Revised:1997-03-07 Online:1997-12-01 Published:1997-12-01

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TOPEX卫星是目前精度最高的海洋测高卫星，利用ＳＬＲ技术确定的TOPEX卫星轨道径向精度达到2.8cm，这使它可以有效地监测全球的海洋地形。TOPEX卫星主要用于全球的海面变化和洋流研究。利用TOPEX资料可以得到新的地球引力场、海洋大地水准面和海潮模型。计算出全球海平面变化，监测到Kelvin波和Rossby波，发现海面变化和海温之间存在强的相关性。另外，还介绍了有关TOPEX卫星在进行摆动漂移改正时出现的错误，这一错误影响了根据TOPEX早期数据得到的海平面变化的结果，但对其它方面的研究影响较小。

关键词: 卫星测高, TOPEX卫星, 摆动漂移, 海洋学研究

TOPEX,the most accurate altimeter system,can observe the global ocean topography with an accuracy of a few centimeters.The RMS accuracy of dynamic orbit is 2.8 cm(computed by using SLR)and 3.5 cm(using DORIS). In June 1996,an error was found in the TOPEX Algorithm S1034 which corrects altimeter data for oscillator drift.This error affected sea level change,but most oceanography results were not be affected by this error.After correcting this error,we get a preliminary result of global sea surface rising on 1.0± 0.7 mm/a. Using TOPEX altimeter data,a few new earth gravity models,geoid models and ocean tide models were generated,and these models were better than old models.The Kelvin and Rossby waves were found in the equatorial Pacific band,and the observation shows these waves were associated with the wind activities.The TOPEX Geophysics Record Data(GDR)also shows there was a good fit between the sea surface height(SSH) variabilities and sea surface temperature(SST).

Key words: Satellites altimetry, TOPEX mission, Oscillate drift error, Oceanography research.

中图分类号:

P288/P715.53.6

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