QUANTITATIVE MODELING OF SUSPENDED SEDIMENT IN MIDDLE CHANGJIANG RIVER FROM MODIS

• Published in: Chinese geographical science Vol. 16; no. 1; pp. 79 - 82
• Main Authors: Liu, Can-de, He, Bao-yin, Li, Mao-tian, Ren, Xian-you
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Nature B.V 01.03.2006; Institute of Geodesy & Geophysics, Chinese Academy of Sciences, Wuhan 430077, P. R. China; Graduate School of Chinese Academy of Sciences, Beijing 100049, P. R. China%Institute of Geodesy & Geophysics, Chinese Academy of Sciences, Wuhan 430077, P. R. China%Laboratory of Geographic Information Science, East China Normal University, Shanghai 200062, P. R. China
• Subjects: Environmental monitoring; MODIS; Remote sensing; Rivers; Sediment concentration; Sediments; Studies; Suspended sediments; Water monitoring; Water quality; Water quality management; 分辨率; 沉积物; 遥感技术; empirical model; middle Changjiang River; suspended sediment; MODIS
• ISSN: 1002-0063; 1993-064X
• DOI: 10.1007/s11769-006-0026-1

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 （R^2=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.