Volume 30 Issue 8
Aug.  2005
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CHEN Xiaoling, YUAN Zhongzhi, LI Yoksheung, WAI Onyxwh. Spatial and Temporal Dynamics of Suspended Sediment Concentration in the Pearl River Estuary Based on Remote Sensing[J]. Geomatics and Information Science of Wuhan University, 2005, 30(8): 677-681.
Citation: CHEN Xiaoling, YUAN Zhongzhi, LI Yoksheung, WAI Onyxwh. Spatial and Temporal Dynamics of Suspended Sediment Concentration in the Pearl River Estuary Based on Remote Sensing[J]. Geomatics and Information Science of Wuhan University, 2005, 30(8): 677-681.
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Spatial and Temporal Dynamics of Suspended Sediment Concentration in the Pearl River Estuary Based on Remote Sensing

  • 1State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, 129 Luoyu Road, Wuhan 430079, China( 2Dept. of Civil and Structural Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong

Funds: 国家973计划资助项目(2003CB415205);国家自然科学基金资助项目(40176032);香港理工大学基金资助项目(A-PF54);香港研究资助局资助项目(Polyu5143104E)
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  • Received Date: May 24, 2005
  • Revised Date: May 24, 2005
  • Published Date: August 04, 2005
    Graphical Abstract
    • Abstract
  • In this paper, 152 suspended sediment concentration resulting images retrieved from reflectance of NOAA/AVHRR channel 1 (580 nm~690 nm) and channel 2 (720 nm~1 100 nm) in the Pearl River estuary and its adjacent coastal waters from 1995 to 2000 were selected to analyze the spatial distribution and variation of suspended sediment concentration in three temporal scales. The modeler of ERDAS IMAGINE ver8.5 was employed to calculate pixel based average concentration of suspended sediment according to the special time period and the regulation of spatial and temporal distribution and variation of suspended sediment concentration was studied. Results showed that obvious spatial distribution and temporal variation existed in all three temporal scales, concentration contours almost paralleled coastline and the values decreased from river mouth to open sea. The curvature and gradient implied the impact of run-off on suspended sediment along the coastal waters. The shift and convex of concentration contour basically directed the impact scope of run-off and the movement of suspended sediment along the coastal waters.
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