海水吸收光谱测量方法比较—定量滤膜技术和现场测量方法

本文对水体吸收光谱的2种测量方法进行了比较,这2种方法分别为基于分光光度计的定量滤膜技术和吸收衰减仪的现场测量方法。为了检验和比较这2种测量方法的不同,同时对两类不同类型水体的吸收系数进行了测量。其中一类水体为实验室培养的单种藻类水体,共有36个样本,包括4大类,分属16个种;另一类水体为黄海水域的水体,包括49个站位数据,基本覆盖了南黄海水域,440 nm的吸收系数在0.05～2.0 m-1之间。结果表明,不同波段实验室培养的单种藻类水体两者测量吸收系数的相关系数平方在0.96～0.98之间,相对均方根误差为14%～16%之间;对于黄海水体的测量,相关系数的平方在0.90～0.94之间,相对均方根误差在14%～27%之间。2种测量方法对这两类水体吸收系数的测量均具有很高的一致性,其中实验室培养的单种藻类水体的测量结果的一致性好于黄海水体的测量结果。

Comparision of Absorption Coefficients Measured with the Quantitative Filtered Technique and the Field Measurement Method

The comparison of the two methods for absorption coefficient measurement of sea water was made,which were the quantitative filtered technique and field measurement method.To evaluate the performance of these two methods,the absorption coefficients of two types of waters were measured.One is monospecific algae waters cultured in laboratory,36 samples representing 4 divisions and 16 species.The other is the natural sea water located in the southern Yellow Sea,49 samples with absorption coefficient at 440 nm i...