基于环境一号卫星的四十里湾透明度遥感反演  

Retrieval of secchi disk depth in Sishili Bay using the HJ-1B CCD image

作　　者：禹定峰[1,2] 邢前国[1] 周斌[2] 孙元芳[2] 周燕[2] 盖颖颖[2] 施平[1] 

机构地区：[1]中国科学院烟台海岸带研究所,山东烟台264003 [2]山东省科学院海洋仪器仪表研究所,山东青岛266001

出　　处：《海洋环境科学》2014年第4期580-584,共5页Marine Environmental Science

基　　金：中国科学院先导专项(XDA11020403);山东省留学人员科技活动择优资助项目(SR-12-10-1)

摘　　要：利用环境一号小卫星的CCD数据及同步地面观测数据,进行了烟台四十里湾海域透明度的遥感反演研究。结果表明,红蓝波段比值与实测透明度具有较高的相关性,并以此为基础建立了该区域水体透明度的遥感反演模型,反演值与实测值的平均相对误差为8.6%,均方根误差为0.1 m。据此模型绘制了四十里湾水体透明度分布图。研究发现,透明度具有近岸低、远岸高的特点,且从近岸向外海基本呈逐渐递减的趋势。Secchi disk depth （SDD） is an important optical property of water related to water quality and primary pro duction. The traditional sampling method is not only timeconsuming and laborintensive but also limited in terms of temporal and spatial coverage, while remote sensing technology can deal with these limitations. In this study, models estimating SDD have been proposed based on the regression analysis between the HJ1 satellite CCD image and syn chronous in situ measurements. The results illustrate the band ratio model of B3/B1 of CCD could be used to estimate Secchi depth in this region, with MRE of 8.6% and RMSE of 0.1 m, respectively. In addition, SDD was deeper in offshore waters than in inshore waters.

关 键 词：环境一号 遥感 透明度 四十里湾 

分 类 号：X87[环境科学与工程—环境工程]