中国近海非色素颗粒物的光学特性*

doi:10.11978/j.issn.1009-5470.2012.06.009

热带海洋学报 ›› 2012, Vol. 31 ›› Issue (6): 57-61.doi: 10.11978/j.issn.1009-5470.2012.06.009cstr: 32234.14.j.issn.1009-5470.2012.06.009

中国近海非色素颗粒物的光学特性*

周虹丽, 朱建华, 李铜基, 汪小勇

国家海洋技术中心, 天津 300112

收稿日期:2011-01-21 修回日期:2011-03-06 出版日期:2012-12-01 发布日期:2013-02-06
作者简介:周虹丽(1978—), 女, 河北省怀安县人, 工程师, 硕士, 从事海洋光学遥感研究。
基金资助:
我国近海海洋综合调查与评价专项(908-01-ST11、908-I-ZC-04)

Optical properties of de-pigmented particles offshore of China

ZHOU Hong-li, ZHU Jian-hua, LI Tong-ji, WANG Xiao-yong

National Ocean Technology Center, Tianjin 300112, China

Received:2011-01-21 Revised:2011-03-06 Online:2012-12-01 Published:2013-02-06

摘要/Abstract

摘要： 非色素颗粒物是中国近海水体光学特性的重要影响因素。基于在中国近海海洋光学调查中获取的1355个站位的非色素颗粒物吸收系数数据, 对非色素颗粒物440nm吸收系数a a_d (440)及其光谱斜率S a_d进行了分析, 研究表明: 1)在封闭或半封闭海湾以及河口海域的a a_d (440)较其他海域明显偏大; 2) a a_d (440)占水体440nm总吸收系数a a_t (440)的百分比值分布特点与a a_a_d (440)的分布特点一致, 即ad(440)越大, 其对水体总吸收的贡献越大; 3)S a_d与a a_d (440)仅在两个海域表现出一定的弱负相关性, 在其他绝大部分海域两者的相关性较弱。

关键词: 非色素颗粒物, 吸收光谱, 光谱斜率

Abstract: De-pigmented particles play an important role in determining the optical properties of seawater in coastal oceans. Using the data collected at about 1,355 stations offshore of China, variations in the spectral absorption of de-pigmented particles at 440 nm (a_d (440)) and their spectral slope (S a_d) were investigated. Higher values of a a_d (440) were observed in enclosed or semi-enclosed bay waters and estuarine waters. The contribution of de-pigmented particles to total seawater absorption at 440 nm shows the similar distribution with that of a a_d (440). Except for weak negative correlations in two study areas, there is no obvious relationship between ad(440) and Sd in most parts of our study areas.

Key words: de-pigmented particle, absorption coefficient, spectral slope

中图分类号:

P733.3

周虹丽, 朱建华, 李铜基, 汪小勇. 中国近海非色素颗粒物的光学特性*[J]. 热带海洋学报, 2012, 31(6): 57-61.

ZHOU Hong-li, ZHU Jian-hua, LI Tong-ji, WANG Xiao-yong. Optical properties of de-pigmented particles offshore of China[J]. Journal of Tropical Oceanography, 2012, 31(6): 57-61.

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中国近海非色素颗粒物的光学特性*

Optical properties of de-pigmented particles offshore of China

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