中国地理科学(英文版) ›› 2006, Vol. 16 ›› Issue (1): 79-82.

• 论文 • 上一篇    下一篇

QUANTITATIVE MODELING OF SUSPENDED SEDIMENT IN MIDDLE CHANGJIANG RIVER FROM MODIS

LIU Can-de1,2, HE Bao-yin1, LI Mao-tian3, REN Xian-you1   

  1. 1. Institute of Geodesy & Geophysics, Chinese Academy of Sciences, Wuhan 430077, P. R. China;
    2. Graduate School of Chinese Academy of Sciences, Beijing 100049, P. R. China;
    3. Laboratory of Geographic Information Science, East China Normal University, Shanghai 200062, P. R. China
  • 收稿日期:2005-10-12 出版日期:2006-03-20 发布日期:2011-12-15
  • 作者简介:LIU Can-de(1980- ),male,a native of Tai'an of Shangdong Province,master,specialized in application of RS and GIS.E-mail:candel@asch.whigg.ac.cn.
  • 基金资助:

    Under the auspices of Post Doctoral Scientific Fund of China (No.2003034495);Knowledge Innovation Program ofChinese Academy of Sciences (No.KZCX1-SW-12-1);and Knowledge Innovation Program of Institute of Geodesy and Geophysicsof Chinese Academy of Sciences (No.KSCX2-SW-110)

QUANTITATIVE MODELING OF SUSPENDED SEDIMENT IN MIDDLE CHANGJIANG RIVER FROM MODIS

LIU Can-de1,2, HE Bao-yin1, LI Mao-tian3, REN Xian-you1   

  1. 1. Institute of Geodesy & Geophysics, Chinese Academy of Sciences, Wuhan 430077, P. R. China;
    2. Graduate School of Chinese Academy of Sciences, Beijing 100049, P. R. China;
    3. Laboratory of Geographic Information Science, East China Normal University, Shanghai 200062, P. R. China
  • Received:2005-10-12 Online:2006-03-20 Published:2011-12-15

摘要:

Remote sensing techniques have been widely used to observe bodies of water. Among satellite sensors commonly used for water quality studies, the Moderate-resolution Imaging Spectroradiometer (MODIS) has potential in water quality monitoring, because of its moderate spatial resolution and high temporal resolution. In this paper, the utility of MODIS data for suspended sediment monitoring in the middle Changjiang (Yangtze) River is studied. It is concluded that suspended sediment concentration correlates well with reflectance values (R1-R2)/(R1+R2) retrieved from MODIS 250m image data (R2=0.72, n=41). Based on this correlation, we obtain the empirical model of suspended sediment concentration in the middle Changjiang River from MODIS. It is shown that it is useful for MODIS data to monitor this parameter of water quality.

关键词: MODIS, suspended sediment, empirical model, middle Changjiang River

Abstract:

Remote sensing techniques have been widely used to observe bodies of water. Among satellite sensors commonly used for water quality studies, the Moderate-resolution Imaging Spectroradiometer (MODIS) has potential in water quality monitoring, because of its moderate spatial resolution and high temporal resolution. In this paper, the utility of MODIS data for suspended sediment monitoring in the middle Changjiang (Yangtze) River is studied. It is concluded that suspended sediment concentration correlates well with reflectance values (R1-R2)/(R1+R2) retrieved from MODIS 250m image data (R2=0.72, n=41). Based on this correlation, we obtain the empirical model of suspended sediment concentration in the middle Changjiang River from MODIS. It is shown that it is useful for MODIS data to monitor this parameter of water quality.

Key words: MODIS, suspended sediment, empirical model, middle Changjiang River

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