| QUANTITATIVE MODELING OF SUSPENDED SEDIMENT IN MIDDLE CHANGJIANG RIVER FROM MODIS |
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| 作者姓名： | LIU Can-de HE Bao-yin LI Mao-tian REN Xian-you |
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| 作者单位： | [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 |
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| 基金项目： | 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) |
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| 摘 要： | 1INTRODUCTIONThe quality of water is traditionally determined by col-lectingwatersamplesandanalyzingthesamplesin a lab-oratory. However, sampling is very much hard sledding,time-consuming, slow and expensive, and easily in thecontrol of weather conditions, and does not include allwater areas. Satellite estimates of water quality havefound widespread application. Remote sensing instru-ments have been applied in water quality monitoringwith varying success (DANA and RICHARD, 1999;RUDD…
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| 关 键 词： | 长江 沉积物 水质 分辨率 MODIS 泥沙 遥感技术 |
| 文章编号： | 1002-0063（2006）01-0079-04 |
| 收稿时间： | 2005-10-12 |
Quantitative modeling of suspended sediment in middle Changjiang River from modis |
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| LIU Can-de HE Bao-yin LI Mao-tian REN Xian-you.QUANTITATIVE MODELING OF SUSPENDED SEDIMENT IN MIDDLE CHANGJIANG RIVER FROM MODIS[J].Chinese Geographical Science,2006,16(1):79-82. |
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| Authors: | Can-de Liu Bao-yin He Mao-tian Li Xian-you Ren |
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| Institution: | (1) Institute of Geodesy & Geophysics, Chinese Academy of Sciences, 430077 Wuhan, P. R. China;(2) Graduate School of Chinese Academy of Sciences, 100049 Beijing, P. R. China;(3) Laboratory of Geographic Information Science, East China Normal University, 200062 Shanghai, P. R. China |
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| 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. |
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| Keywords: | MODIS suspended sediment empirical model middle Changjiang River |
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