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The Acqisition of Remotely Sensed Sargassum Information on Daya Bay

by Xuelian Chen, Scientific Research Inst, China,
Dan Luo, Scientific Research Inst, China,
Tiefang Li, Scientific Research Inst, China,
Jianchun Yi, Scientific Research Inst, China,
Huai Liu, Scientific Research Inst, China,



Document Type: Proceeding Paper

Part of: Coastal Zone '91

Abstract:

The nuclear power plant on Daya Bay is the largest nuclear power plant under construction in China. In order to obtain reliable data about the possibility of blocking of the water intake of the plant by drifting sargassum, a type of large algae, it is necessary to determine the range of distribution and total production of sargassum, but this is hard to do by conventional methods, since it grows underwater. Remote sensing in the wave band from 0.4 to 0.7 ?m has been found to be an economical and fast way to determine the distribution and concentration of sargassum in the bay. The method is based on the fact that small differences in luminance indicate differences in the growth density of the sargassum. A special satellite image is made by means of computer image processing supplemented by optical processing.

Subject Headings: Power plants | Water intakes | Vegetation | Computer vision and image processing | Nuclear power | Sensors and sensing | Coastal processes | China | Asia

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