Absorption and scattering properties of water body in Taihu Lake, China: backscattering
Absorption and scattering properties of water body in Taihu Lake, China: backscattering
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DOI：
10.1080/01431160802549385
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发表时间：
2009-05
影响因子：
3.4
通讯作者：
R. Ma;D. Pan;H. Duan;Q. Song
中科院分区：
文献类型：
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作者：
R. Ma;D. Pan;H. Duan;Q. Song
利用HydroScat‐6光谱后向散射传感器原位测量了太湖地区67个样品在442、488、532、589、676、852 nm 6个波长下的后向散射系数。对实测原始数据进行校正，后向散射概率分别为0.015、0.019、0.030和0.050。结合优化算法的模拟数据，表明后向散射概率（后向散射系数与悬浮颗粒物散射系数之比）是波长相关的，而不是常数，其均值为0.041 (SD为0.030)，可以表示为波长的显著二次函数。后向散射概率值可用于对实测原始数据进行更精确的西格玛校正。因此，后向散射可以被尽可能清晰和精确地发现。
The HydroScat‐6 spectral backscattering sensor was used to measure in situ the backscattering coefficients at six wavelengths (442, 488, 532, 589, 676, 852 nm) at 67 samples from all over Taihu Lake, China. The measured raw data were corrected with the tested backscattering probabilities of 0.015, 0.019, 0.030 and 0.050. Combined with simulated data by the optimization algorithm, it shows that the backscattering probability (a ratio between backscattering coefficient and scattering coefficient of suspended particulate matter), with a mean of 0.041 (SD 0.030), is wavelength‐dependent and not a constant, and may be expressed as a significant quadratic function of wavelength. The value of backscattering probability can be used to perform the sigma correction for the measured raw data more accurately. Thus, the backscattering may be uncovered as clearly and precisely as possible.