Study of Interaction Between the Oceanic change and the Solid Earth by the International TOPEX/POSEIDON Satellite Program

1992年4月至1993年3月进行了TOPEX/Poseidon高度计数据处理算法的研究。1992年8月10日卫星发射成功后，我们开始每周处理NASA和CNES分发的临时地球物理数据。TOPEX/POSEIDON数据的初步结果可概括如下：(1)临时地球物理数据记录提供了高达13厘米的海面高度。因此，通过重新调整卫星轨道，误差可以减小到1厘米。(2)从高度计数据中可以找到黑潮及其延伸部分和Oyashio，虽然初步可以追踪到它们的变化。(3)在与日本海事厅附属的卫星激光跟踪设备的合作下，我们正在努力改善卫星轨道的信息，特别是在西太平洋地区。由于TOPEX/Poseidon的激光跟踪站最初位于地中海的东太平洋一端，因此远方地区已成为轨道预测最差的地区。这项研究正在解决这一问题。(4)2月21日至25日，在加州理工学院喷气推进实验室举行的国际TOPEX/Poseidon计划发射后会议上，本研究的首席研究员报告了日本在数据处理方面的进展。三名调查人员参加了会议。

The study conducted from April 1992 to March 1993 is construction of the algorism for the data processings of TOPEX/POSEIDON Altimeter data After the satellite was launched successfully on August 10, 1992, we began processing of the Interim Geophysical Data distributed from NASA and CNES every week. The preliminary results from TOPEX/POSEIDON data can be summarized as follows :(1) The Interim Geophysical Data Record provides Sea Surface Height as accurate as 13 cm. It is promising, therefore, that, by re-adjustment of the satellite orbit, the error could be reduced to 1cm level.(2) It was possible to find the Kuroshio and its extension and the Oyashio from the altimeter data, and, although preliminarily, their variations could be traced.(3) Under the co-operation with the satellite Laser tracking facility attached to the Japan Hydrographic Department, Maritime Safety Agency we are trying to improve the information of satellite orbit, particularly in the western Pacific region. Since the Laser tracking stations for TOPEX/POSEIDON are originally sided to the east Pacific end the Mediterranean sea the fareast region has been left as an area of the worst orbit prediction. This problem is being solved through this study.(4) In the post-launch meeting of the International TOPEX/POSEIDON program held at the Jet Propulsion Laboratory, California Institute of Technology, between 21 and 25 February, the head investigator of this study reported the progress of data processings in Japan. Three investigators participated in the meeting.