东海典型水体的黄色物质光谱吸收及分布特征

雷惠; 潘德炉; 陶邦一; 沈亮; 康林冲; 张汉松

东海典型水体的黄色物质光谱吸收及分布特征

1.
浙江大学地球科学系, 浙江, 杭州, 310012;国家海洋局, 第二海洋研究所, 浙江, 杭州, 310012
2.
国家海洋局, 第二海洋研究所, 浙江, 杭州, 310012
3.
国家海洋局, 第二海洋研究所, 浙江, 杭州, 310012;中国科学院上海技术物理研究所, 上海, 200083

基金项目: 国家“八六三”资助项目(2007AA092002);国家海洋局第二海洋研究所基本科研业务费专项资助项目(SZ0819)

计量
- 文章访问数: 1838
- HTML全文浏览量: 10
- PDF下载量: 2213
- 被引次数: 0
出版历程
- 收稿日期: 2008-07-20
- 修回日期: 2009-01-05

The spectral absorption and distribution characteristics of CDOM in the typical waters of the East China Sea

1.
Zhejiang University, Hangzhou 310012, China;Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China
2.
Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China
3.
Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China

摘要

摘要: 水体中的有色可溶性有机物(又称"黄色物质")是遥感监测水质分类的主要参数之一,研究其光谱吸收性质具有重要的实际意义。东海海区受长江冲淡水等陆源输入的影响,水体浑浊,光学性质复杂,以往对该区域CDOM吸收特征的研究相对较少。利用"九○八"我国近海海洋光学调查航次数据,获得了2006-2007年四个季节东海水体样品CDOM的光谱吸收数据,建立了包括杭州湾高浑浊水体、长江冲淡水、外海水体等东海不同水体类型的CDOM光谱模型及其典型波段的吸收系数分布情况。发现近岸受陆源输入影响大的海区其光谱性质与外海有明显区别,主要体现为近岸尤其在杭州湾附近站点短波段吸收系数值非常高,而且随波长增加吸收系数曲线衰减迅速,同时还有一定的季节变化,外海站点短波段吸收值则明显要低。这反映了CDOM的陆源输入特性,愈向外受到海水的混合稀释作用愈显著,验证了CDOM可以作为近岸海水水质监测的重要参数。对该海区内CDOM的实测荧光性质进行了相关分析,结果表明CDOM荧光与吸收系数之间有很好的线性相关关系,可以作为荧光方法遥感监测该海区CDOM的有价值的参考。
- 东海 /
- 黄色物质 /
- 吸收系数 /
- 荧光性质
Abstract: It is very practical to learn the spectral absorption characteristics of chromophoric dissolved organic matter (CDOM) in the seawater which is one of the main parameters for water quality remote sensing monitoring Owing to the Changjiang River input, the seawater of the East China Sea (ECS) has a complex optical environment and thus is relative less there.Based on a large in situ survey organized on the ECS, a dat abase of CDOM spectral absorption was potten covering four seasons, and a spectral model was established including different water types in this region as well as the distribution on typical bands.The result shows that the diverse spectral characteristics between alongshore water influenced by terrigenous input heavily and the water in the open sea, e.g., the absorption coefficient values in the Hangzhou Bay are extremely high on short bands and decay sharply as the wavelength went longer, whereas the values in the open sea are always much lower.The distribution reflected the terrigenous origin characteristics of CDOM and it also had seasonal variations especially on short wavelength.The result validates that CDOM can be used as an important parameter for the nearshore water quality monitoring.A fluorescence measurement of CDOM was done, and a good linear relationship between it and the absorption was given out, which could be a valuable reference.
- East China Sea /
- CDOM /
- absorption coefficient /
- fluorescence characteristics

HTML全文

参考文献(22)

IDCCG.Remote sensing of inherent optical properties:fundamentals,tests of algorithms,and applications[R]//LEE Z-P,ed.Reports of the International Ocean-colour Coordinating Group,n5.1OCCG,Dartmouth,Canada.2006.

CARDER,K L,STEW ARD R G,HARVEY G R,et al.Marine humic and fulvic acids:their effects on remote sensing of ocean chlorophyll[J].Limnology and Oceanography,1989,34:68-81.

陈楚群,潘志林,施平.海水光谱模拟及其在黄色物质遥感反演中的应用[J].热带海洋学报,2003,22:33-39.

郭卫东,程远月,吴芳.海洋荧光溶解有机物研究进展[J].海洋通报,2007,26:98-106.

CARDER K L,CHEN F R,LEE Z P,et al.Semianalytic moderate-reaolution imaging spectrometer algorithms for chlorophyll-a and absorption with bio-optical domains based on nitrate-depletion temperatures[J].J Geophys Res,1999,104:5403-5421.

FRANK E Hoge,ANTHONY Vodacek.Inherent optical properties of the ocean:retrieval of the absorption coefficient of chromophofic dissolved organic matter from fluorescence measurements[J].Limnology and Oceanogrophy,1993,38(7):1394-1402.

刘芳.南黄海及东诲北部海域悬沙的遥感研究[D].北京:中国科学院研究生院,2005.

NIEKE B,REUTER R.HEUERMANN R,et al.Light absorption and fluorescence of chromophoric dissolved organic matter(CDOM),in the St.Lawrence Estuary.Continental Shelf Research,1997,7(3):235-252.

FERRARI G M,DOWELL M D.CDOM absorption characteristics with relation to fluorescence and salinity in coastal areas of the Southern Bahic Sea[J].Estuarine,Coastal and Shelf Science,1998,47:81-105.

国家海洋局908专项办公室.908项目海洋光学调查技术规程[S].北京:海洋出版社,2006.

MITCHELL B Greg,KAHRU Mati,WIELAND John,et al.Determination of spectral absorption coefficients of particles,dissolved material and phytoplankton for discrete water samples[M]//Ocean Optics Protocols for Satellite Ocean Color Sensor Validation,Revision 4,Volume Ⅳ,Chapter 4.Greenbelt,Moryland:Goddard Space Flight space center,39-64.

国家质量技术监督局.GB 17378.7-1998海洋监测规范[S].北京:中国标准出版社,1998.

白雁.中国近海固有光学量及有机碳卫星遥感反演研究[D].北京:中国科学院研究生院,2006.

朱建华,李铜基.探讨黄色物质吸收曲线参考波长选择[J].海洋技术,2003,22:10-14.

周名江,颜天,邹景忠.长江口邻近海域赤潮发生区基本特征初探[J].应用生态学报,2003,14(7):1031-1038.

郭卫东,夏恩琴,韩宇超,等.九龙江口CDOM的荧光特性研究[J].海洋与湖沼,2005,36:349-357.

FERRARI G M,DOWELL Mn CDOM Absorption characteristics with relation to fluorescence and salinity in coastal areas of the southern BaItic Sea[J].Estusrine,Coastal and Shelf Science,1998,47:81-105.

王志刚,刘文清,李宏斌,等.三维荧光光谱法分析巢湖CDOM的空间分布及其来源[J].环境科学学报,2006,26:275-279.

夏达英,李宝华,吴永森,等.海水黄色物质荧光特性的初步研究[J].海洋与朔沼,1999,30:719-725.

张运林.水体中有色可溶性有机物的研究进展[J].海洋湖沼通报,2006(3):119-127.

FERRARI G M,TASSAN S,On the accuracy of determining the light absorption by"yellow substance"through measurement of induced fluorescence[J].Limnology and Oceanography,1991,36:777-786.

FRANK E Hoge,ROBERT N Swift,JAMES K Yungel,et al.Fluorescence of dissolved organic matter:comparison of North Pacific and North Atiantic Oceans during April 1991[J].Journal of Geophysical Research,1993,98:22779-22787.

施引文献

资源附件(0)

访问统计