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月的研究是对TOPEX/POSEIDON高度计数据处理算法的构建。1992年8月10日卫星成功发射后，我们开始对NASA和CNES每周分发的中期地球物理数据进行处理。TOPEX/POSEIDON数据的初步结果可概括为：(1)临时地球物理数据记录提供的海面高度精度可达13 cm。因此，通过重新调整卫星轨道，将误差降低到1厘米的水平是有希望的。(2)从高度计资料中可以找到黑潮及其延伸和大潮，并可以初步追踪它们的变化。(3)在与隶属于日本海道测量部和海事安全局的卫星激光跟踪设施的合作下，我们正在努力改进卫星轨道信息，特别是在西太平洋区域。由于TOPEX/POSEIDON的激光跟踪站最初面向地中海东太平洋端，因此远东地区被留作最坏轨道预测的区域。这个问题正在通过这项研究得到解决。(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项目发射后会议上，这项研究的首席研究员报告了日本数据处理的进展情况。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.