近海Ⅱ类海水反射率与表面悬浮泥沙相关性的研究

阐述了1998年5月2日至27日“东海重点试验区水下光谱观测”试验期间,利用上海技术物理研究所研制的PIS-B型光谱辐射计测得的现场光谱数据和用常规吊桶表面水质取样,经实验室泥沙样和光谱数据处理后,用最小二乘法建立光谱反射率与表层悬浮泥沙浓度之间的关系。结果表明,水体表面的光谱反射率与表层悬浮泥沙浓度之间呈指数关系。实践证明,遥测东海海区表面悬浮泥沙浓度的最佳波带为555nm和670nm。

THE CORRELATION STUDY BETWEEN THE AVERAGE REFLECTANCE IN PIS SPECTROMETER CHANNELS AND SURFACE SUSPENDED SEDIMENTS

In this paper, it is explained that the spectrometric data in situ measured by PIS_B type spectral radiometer, which is made by Shanghai Institute of Technical Physics. Chinese Academy of Sciences, and surface water samples taked with water bucket are used during the test of the water under spectral survey in important East Sea area. After the sediment samples and spectrometric data are treated, the correlation between the spectral reflectance and suspended sediments is quantitatively established by the least square method. The result expresses that the relationship between the spectral reflectance and surface suspended sediments concentration shows exponential function and 555 nm and 670 nm wavelengths are the best wavebands to remotely measure surface suspended sediments in East Sea.