国土资源遥感Issue(3)：151-155,5.
珠江口海水透明度与光谱相关关系研究
The Relationship Between Seawater Clarity and Water- leaving Reflectance Spectra of Seawater in the Pearl River Estuary
摘要
Abstract
The water - leaving reflectance spectra of seawater were obtained through data collected at the Pearl River Estuary in May, 2009. Their negative natural logarithmic values were also acquired by calculation. The correlation coefficients between secchi depths and water - leaving reflectance spectra of seawater and their negative natural logarithmic values were calculated. The correlation coefficients between secchi depths and negative natural logarithm values of water - leaving reflectance spectra of seawater are about 11 % higher than the correlation coefficients between secchi depths and water - leaving reflectance spectra of seawater. According to the analytical result, the water - leaving reflectance spectra of seawater and their negative natural logarithm values whose correlation coefficients are maximum and whose locations are Hyperion satellite center wavelength were selected to formulate linear, polynomial, power and exponential regression equations which were used to fit seawater clarity. It is found that the power regression equation fitted by the negative natural logarithm values of water - leaving reflectance spectra of seawater at 559 nm can receive better results. The fitting degree R2 is 0. 922 2 and the average relative error is 18% for the tested samples. The result obtained by the authors can provide support for retrieval of seawater clarity in South China Sea shore by satellite remote sensing.关键词
水体离水光谱反射率/海水透明度/珠江口Key words
Water - leaving reflectivity/ Seawater clarity/ Pearl River estuary分类
信息技术与安全科学引用本文复制引用
陈蕾,谢健,彭晓鹃,李振,娄全胜,张晓浩,杨帆..珠江口海水透明度与光谱相关关系研究[J].国土资源遥感,2011,(3):151-155,5.基金项目
国家高新技术研究发展计划项目(863计划,编号:2009AA12Z148)、广东省自然科学基金项目(编号:7300652)、国家海洋局青年基金项目(编号:2008425)及国家海洋局局长基金项目(编号:0832)共同资助. （863计划,编号:2009AA12Z148）
