春季太湖水体上行辐亮度漫衰减系数的特征研究  

Study on the Characteristics of Diffuse Attenuation Coefficient of Upwelling Radiance of Tai Lake in Spring

作　　者：季春华[1] 赵巧华[1] 邱辉[2] 

机构地区：[1]南京信息工程大学遥感学院,江苏南京210044 [2]南京信息工程大学大气科学学院,江苏南京210044

出　　处：《环境科技》2012年第2期1-3,共3页Environmental Science and Technology

基　　金：太湖混合层与真光层深度谱配置的时空变化规律;形成机制及其环境效应研究(41071070);国家水体污染控制与治理科技重大专项(2009ZX07101-013)

摘　　要：基于太湖2010年4月29日～5月2日28个采样点上行辐亮度数据和水质参数数据,分析了春季太湖水体上行辐亮度漫衰减系数的光谱特征,结果表明:春季太湖水体上行辐亮度漫衰减系数随波长的增加基本呈指数衰减趋势;受水体成分等因素影响,上行辐亮度平均漫衰减系数的空间分布不均,衰减高值区在西南部湖区;吸收、散射作用是造成上行辐亮度衰减的主要因素,总悬浮物浓度对上行辐亮度漫衰减系数的影响显著。Based on the upwelling radiance data and water qualities parameters of Tai Lake, spectral characteristics of diffuse attenuation coefficient of upwelling radiance and the variations with the main affecting factors at different wavelengths in spring were analyzed. The results indicated that the diffuse attenuation coefficient of upwelling radiance was basically in the tendency to the exponential decay along with the wavelengths in most location. Spatial distribution of the average diffuse attenuation coefficient of upwelling radiance is different by the composition of water body and other factors. Scattering and absorption were the main fators leading to upwelling radiance attenuation, anddiffuse attenuation coefficient of upwelling radiance was significantly influenced by total suspended matter concentration.

关 键 词：太湖: 上行辐亮度漫衰减系数: 光谱特征 

分 类 号：X1[环境科学与工程—环境科学]