悬浮颗粒矿物成分对近岸水体光学参数的影响及光谱响应研究

项目名称： 悬浮颗粒矿物成分对近岸水体光学参数的影响及光谱响应研究

项目编号： No.41306190

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 天文学、地球科学

项目作者： 严立文

作者单位： 中国科学院海洋研究所

项目金额： 25万元

中文摘要： 水体光学性质对真光层光化学反应过程和生态过程均有重要影响，悬浮颗粒矿物成分影响着水体吸收和散射等光学特性，是影响水体光传输模拟的重要因素，也是导致不同近岸水体水色要素反演模式存在显著差异的原因之一。开展悬浮颗粒矿物成分对近岸海域复杂水体光学性质及表观光谱响应研究具有重要的科学意义，但在以往中国近岸海域的研究中很少涉及。本项目拟主要通过实验测量、理论模拟，对典型河口海域悬浮颗粒的矿物组合特征进行研究，分析不同矿物成分颗粒的光吸收和散射特性，就不同矿物成分对水体光学参数影响进行定量描述，研究表观反射光谱对水体颗粒不同矿物成分组成的响应，在以上探讨基础上分析悬浮颗粒矿物组成对近岸水体光学特性的影响。本项目涉及海洋光学和生物地球化学领域的交叉，试图解决颗粒矿物成分对水体光学性质的影响和定量描述的关键科学问题，可为解析区域水体光学性质差异、发展我国区域水色要素遥感精化算法提供参考。

中文关键词： 悬浮颗粒；矿物成分；光谱响应；光学特性；反演算法

英文摘要： Hydrolic optical property play important role in photochemical and ecological process in upper euphotic layer. Underwater light field in Case Ⅱ waters is highly affected by mineral suspended particles, in which mineral composition is one important factor. Mineral composition contributes strongly to water optical properties, such as absorption and scattering, and light transfer processes in the water. It's also an important factor whether light transmission simulation can be closed and has great influence on significant difference among different regional particle-mass retrieval models from optical remote sensing. Therefore, research of the influence of mineral composition on water optical properties and spectral response benefits not only for understanding alongshore water optical properties, but also for developing traditional remote sensing paradigm and high-precision regional algorithms of optical remote sensing. However, this kind of topic is rare in the previous research for the China coastal waters. This project focuses on understanding the mechanisms of mineral composition affecting water optical properties. It will be performed by using laboratory measurement and theoretical analysis. The research contents include the mineral assemblage characteristics of representative coastal waters, the effect of mine

英文关键词： suspended particulates；mineral components；spectral response；opitcal properties；inversion algorithm