In Situ Time Series Estimation of Downwelling Diffuse Attenuation Coefficient at Southern Bay of Bengal
In Situ Time Series Estimation of Downwelling Diffuse Attenuation Coefficient at Southern Bay of Bengal
复制标题
孟加拉湾南部下降流扩散衰减系数的原位时间序列估计
DOI：
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发表时间：
2013
影响因子：
2.5
通讯作者：
B. Meenakumari
中科院分区：
文献类型：
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作者：
P. Ashraf;S. Shaju;D. Gayatri;P. Minu;B. Meenakumari
本研究的目的是使用高光谱辐射计确定孟加拉湾西南季风期间海洋沃茨的生物光学特征。叶绿素a的衰减系数Kd（λ）在短波长范围内与叶绿素a的变化有较好的相关性，表明浮游植物对Kd（λ）有影响。在412、443、490和555 nm处的决定系数R2大于0.931。在较短波长下，Kd（490）与Kd（λ）呈良好的线性关系。Kd（λ）的这些关系为研究孟加拉湾西南季风期间水下光场提供了一个平台。
The present study is aimed to determine the bio-optical characteristics of oceanic waters during South west monsoon in Bay of Bengal using hyperspectral radiometer. The variability of diffuse attenuation coefficient, Kd(λ), with chlorophyll a showed a good relation at shorter wavelengths, indicating the effect of phytoplankton on Kd(λ). The determination coefficient, R2 at 412, 443, 490 and 555 nm were greater than 0.931. A good linear relation between Kd(490) and Kd(λ) was observed at shorter wavelengths. These relationships of Kd(λ) provides a platform to study the underwater light field during Southwest monsoon in Bay of Bengal.