千里崖海域真光层光衰减

根据1986年6月在黄海中部的千里崖海域的水光学实测资料和实验室光学测量,讨论了真光层内光衰减系数在遥感和初级生产力中的应用,定量估算影响光衰减的主要物质成分对光衰减的贡献;并探讨了真光层深度、光衰减系数和透明度三者之间的统计关系。

THE LIGHT ATTENUATION OF EUPHOTIC ZONE IN QIANLIYA WATERS IN MIDDLE YELLOW SEA

Recently, the study of light attenuation in euphotic zone is emphasized increasingly due to a increasing interest in water color remote sensing and ecological study.The application of the coefficient of light attenuation in euphotic zone in remote sensing and primary production are discussed by means of observed optical data in Qianliya waters in middle Yellow Sea, and optical measurements in the laboratory. ,Analyses of light attenuation in tested waters show that the slight attenuation coefficient is related to topography, generally the nearer to the shore, the bigger the Kd value, and with the increase of the depth in euphotic zone, Kd values increase too.The effect of the main matter components on light attenuation is estimated as follows:The percentages of light attenuation for phytoplankton, water itself, and tripton are 6%, 25%, and 69% respectively, which is much affected by terrigenous matter near coastal waters, but statistical dependences can still be found among the depth of euphotic zone, the coefficient of light attenuation, and water transparency.Due to light attenuation in near coastal waters being controlled by many factors, so it is difficult to interpret quantitatively or qualitatively the water color remote sensing.