地理学报 ›› 2004, Vol. 59 ›› Issue (1): 95-100.doi: 10.11821/xb200401012

• 卫星遥感监测 • 上一篇    下一篇

基于TOPEX/Poseidon卫星数据的江河流量测算

张继群1, 徐开钦1, 龟山哲1, 渡边正孝1, 陈秀万2, 孙春鹏3   

  1. 1. 日本国立环境研究所,筑波 305-8506;
    2. 北京大学遥感与GIS研究所;北京 100871;
    3. 水利部水文局,北京100053
  • 收稿日期:2003-09-10 修回日期:2003-11-16 出版日期:2004-01-25 发布日期:2004-01-25
  • 作者简介:张继群(1966- ),男,博士,主要从事流域圈环境管理及其相关研究。 E-mail: zhang.jiqun@nies.go.jp
  • 基金资助:

    亚洲太平洋地区环境创新战略项目(APEIS) 环境综合监侧子课题(IEM); 国家自然基金项目(40171074)

Estimation of River Discharge Using TOPEX/Poseidon Altimeter Data

ZHANG Jiqun1, XU Kaiqin1, KAMEYAMA Satoshi1, WATANABE Masataka1, CHEN Xiuwan2, SUN Chunpeng3   

  1. 1. National Institute for Environmental Studies, Tsukuba 305-8506, Japan;
    2. Institute of Remote Sensing and GIS, Peking University, Beijing 100871, China;
    3. Hydrology Bureau, Ministry of Water Resources, Beijing 100053, China
  • Received:2003-09-10 Revised:2003-11-16 Online:2004-01-25 Published:2004-01-25
  • Supported by:

    Integrated Environmental Monitoring (IEM) Subproject, the Asia-Pacific Environmental Innovation Strategy Project (APEIS); National Natural Science Foundation of China, No.40171074

摘要:

TOPEX/Poseidon卫星的原始目的是测量海面高度变化信息,为海洋监测服务。作者通过假设基准面的方法,将由TOPEX/Poseidon卫星数据估算的下垫面水位相对变化信息转化为”水位”系列并建立了由TOPEX/Poseidon 得出的“水位”与相邻水文站实测流量间的相关关系,进而实现了由TOPEX/Poseidon卫星数据估算河道流量的目的。利用1998~1999年TOPEX/Poseidon在长江下游大通附近的过境数据和对应年份大通水文站实测流量数据,验证了本方法的可行性。研究结果表明:在长江下游河道地区,由TOPEX/Poseidon卫星数据可定量估算出河流流量信息。

关键词: 卫星测高;TOPEX/Poseidon;水位;流量;长江

Abstract:

The original purpose of the TOPEX/ Poseidon was to measure sea surface height. Making use of the concept, "assuming datum plane", TOPEX/Poseidon derived water level changes data were converted to water level data. Furthermore, the rating curve between satellite-derived "water level" and in situ river discharge was established. Using this approach, the actual river discharge can be determined from TOPEX/Poseidon data without the need of the actual water level. Based on the two years (1998, 1999) TOPEX/Poseidon data and ground observed river discharge data around Datong station which is located in the lower reaches of the Yangtze River, the approach was validated. The results show that TOPEX/Poseidon data can be used to determine river discharge in the lower reaches of the Yangtze River.

Key words: satellite altimetry, TOPEX/Poseidon, water level, river discharge, Yangtze River