广西科学2016，Vol.23Issue(6)：507-512,6.DOI:10.13656/j.cnki.gxkx.20161230.003
悬浮颗粒物垂直分布对水体光学特性的影响
Effects of Nonuniform Vertical Profile of Suspended Particulate Matter on Water Optical Properties
摘要
Abstract
[Objective]The influence exerted by nonuniform vertical profile of suspended particulate matter on remote-sensing reflectance was studied for a typical inland lake.The maj or sensitive wavelengths and maximum influence water depths were discussed.[Methods]The in situ data and forward radiative transfer model were applied to simulated two typical vertical distributions of water column.The sensitivity of remote sensing reflectance(Rrs )associated with stratified water column showed correlation with suspended particulate matter (SPM),sensitive wavelength and maximum influence water depth.[Results]Compared to vertical uniformed water column,different vertically stratified types could cause more than 100% overestimation or 30% underestimation of Rrs at most and the error decreased with the increase of water depth.When the concentration of surface SPM (SPM1 )was small,the sensitive wavelengths of different water profiles decreased with increas-ing water depth under the same SPM1 .For the same water depth,the sensitive wavelengths moved towards the longer wavebands with increasing SPM1 .When SPM1 was large,no obvious correlation between water depth and sensitive wavelength was observed.The maximum influ-ence water depths for different vertical profiles varied and could reach up to 10 m when the wa-ter was clear.With the increased SPM1 ,the maximum influence water depths decreased and sensitive wavelengths moved towards the longer wavebands.In contrast,the maximum influ-ence water depths centered on 0.5~2.0 m and showed no pronounced tendency when the water was turbid.In addition,the increasing attenuation coefficient of surface water usually led to a decreasing maximum influence water depth.[Conclusion]The results will improve our under-standing of the vertical structure information obtained from surface remote sensing reflectance.关键词
水体垂直分布/遥感反射率/敏感波长/最大影响水深Key words
water vertical distribution/remote sensing reflectance/sensitive wave length/maxi-mum influence water depth分类
信息技术与安全科学引用本文复制引用
黄珏,阳凡林,陈莉琼,陈晓玲,江涛..悬浮颗粒物垂直分布对水体光学特性的影响[J].广西科学,2016,23(6):507-512,6.基金项目
山东省自然科学基金项目(ZR2016DB23),国家自然科学基金项目(41471331),海岛(礁)测绘技术国家测绘地理信息局重点实验室项目(2015B06)和青岛市博士后研究人员应用研究项目(2015206)资助。 （ZR2016DB23）
