Underwater light field determined by water constituents in highly turbid water: the case of Taihu lake
Underwater light field determined by water constituents in highly turbid water: the case of Taihu lake
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高浑浊水中水成分决定的水下光场：以太湖为例
DOI：
10.4081/jlimnol.2013.e3
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发表时间：
2013-02
影响因子：
1.6
通讯作者：
Xia CHEN
中科院分区：
文献类型：
--
作者：
Chang-Chun HUANG;Yun-Mei LI;Hao YANG;Qiao WANG;Jun-Sheng LI;Xia CHEN
根据2006 - 2008年5个航次对太湖高浊度生产性水体的生物光学特性和水质成分的多次测量和采样，研究了高浊度生产性水体的光学特性与水质成分之间的关系。太湖是一个高动态比的内陆浅水湖泊。水体成分和光学性质的时空变化是显著的。无机悬浮物（ISM）已成为太湖水体的主要组成部分，其平均百分含量可达65.21%。由于沉积物的再悬浮作用，太湖水体中ISM的浓度与水体的光学性质有很好的相关性。因此，ISM可以被认为是太湖中一个重要的光学活性成分。再悬浮沉积物也导致散射光学性质和叶绿素a浓度（C Chl-a）之间的相关性较差。去除包装效应后，叶绿素a与浮游植物675 nm吸收系数之间的经验关系仍然成立。本研究中线性方程的参数随时间变化较小，特别是固有光学特性（IOPs）与总悬浮物（TSM）浓度之间的关系。研究了表观光学性质（AOP）（颗粒的漫衰减系数，Kdbio）与ISM之间的关系。Kdbio受ISM的影响很大，并与其线性函数相关。有机颗粒[K * dOSM（l）]和无机颗粒[K * dISM（l）]的比漫衰减系数之间的差异是显著的。K * dOSM（1）包括叶绿素-a（chl-a）在675 nm处的吸收性质，其远高于K * dISM（1）的吸收性质。这表明，尽管大浓度ISM诱导的Kdbio大于小浓度OSM诱导的Kdbio，但OSM的衰减能力强于ISM。总的来说，在这项研究中获得的生物光学特性的知识扩展了我们对水光学的理解，并可用于通过水成分浓度预测光学特性，无论测量类型（原位或通过流体动力学模型模拟）。
The relationships between optical properties and water constituents in highly turbid productive water were studied on the basis of the multiple bio-optical measurements and samplings of water constituents made during five cruises from 2006 to 2008 in Taihu lake. Taihu lake is a high dynamic ratio [(square root of area)/depth] inland shallow lake. The spatial and temporal variation of water constituents and optical properties is significant. The inorganic suspended matter (ISM) has become the primary constituent in Taihu lake: its average percentage can reach 65.21%. The concentration of ISM is highly correlated to the optical properties in Taihu lake due to the sediment resuspension. Consequently, the ISM can be taken into account as an important optically-active constituent in Taihu lake. Resuspended sediments also lead to a poor correlation between scattering optical property and chlorophyll-a concentration (C Chl-a ). However, empirical relationship between the C Chl-a and phytoplankton absorption coefficient at 675 nm is still valid when the package effect is removed. The parameters of linear equation in the present study have slight temporal variation, especially for the relationship between inherent optical properties (IOPs) and concentration of total suspended matter (TSM). The relationship between apparent optical property (AOP) (diffuse attenuation coefficient of particle, K dbio ) and ISM has been examined as well. The K dbio is strongly affected by ISM, and correlates to it with linear function. The difference between specific diffuse attenuation coefficients of organic [K * dOSM (l)] and inorganic [K * dISM (l)] particles is significant. K * dOSM (l) includes the absorption property of chlorophyll-a (chl-a) at 675 nm, which is much higher than that of K * dISM (l). This indicates that the attenuation ability of OSM is stronger than that of ISM although the K dbio induced by large concentration of ISM is bigger than the K dbio induced by small concentration of OSM. Overall, the knowledge of the bio-optical properties obtained in this study extends our understanding of water optics and can be used to predict the optical properties via water constituent concentration, regardless of measurement type ( in situ or simulated by hydrodynamic model).
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影响因子：
3.6
作者：
Morel, A;Maritorena, S
通讯作者：
Maritorena, S
影响因子：
3.6
作者：
MOREL, A
通讯作者：
MOREL, A
DOI：
10.18307/2006.0519
发表时间：
2006
期刊：
--
影响因子：
--
作者：
Chen Yuwei;Chen Kaining;Huang Yaohui
通讯作者：
Chen Yuwei;Chen Kaining;Huang Yaohui
DOI：
10.1016/s0967-0645(00)00167-3
发表时间：
2001-12
影响因子：
3
作者：
D.A Siegel;T. Westberry;M.C O’Brien;N.B Nelson;A.F Michaels;J.R Morrison;A. Scott;E. Caporelli-E.-C
通讯作者：
D.A Siegel;T. Westberry;M.C O’Brien;N.B Nelson;A.F Michaels;J.R Morrison;A. Scott;E. Caporelli-E.-C
DOI：
10.1117/12.140655
发表时间：
1992-12
期刊：
--
影响因子：
--
作者：
B. Woźniak;J. Dera;O. J. Koblentz-Mishke
通讯作者：
B. Woźniak;J. Dera;O. J. Koblentz-Mishke