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| 利用MODIS反演长江中游悬浮泥沙含量的初步研究 | |
| 引用本文： | 刘灿德,何报寅,李茂田,任宪友.利用MODIS反演长江中游悬浮泥沙含量的初步研究[J].地质科技情报,2006,25(2):99-102. |
| 作者姓名： | 刘灿德 何报寅 李茂田 任宪友 |
| 作者单位： | 1. 中国科学院测量与地球物理研究所,武汉,430077;中国科学院研究生院,北京,100039 2. 中国科学院测量与地球物理研究所,武汉,430077 3. 华东师范大学教育部地理信息开放实验室,上海,200062 |
| 基金项目： | 中国科学院科研项目，中国科学院知识创新工程项目 |
| 摘 要： | 在众多卫星传感器中,中等分辨率成像光谱仪(MODIS)数据因其高的时间分辨率和中等的空间分辨率,对于水质研究具有自身的潜力和优越性.选取长江中游主河道武汉至宜昌段为例,利用MODIS 250 m波段数据定量反演了内陆河流悬浮泥沙的质量浓度.研究结果表明,地面实测的悬浮泥沙质量浓度与MODIS1,2波段的反射率组合(R1-R2)/(R1 R2)有很好的相关关系(相关系数 R2=0.72,样品数n=41),基于这种相关性建立了长江中游主河道武汉至宜昌段表层悬浮泥沙的遥感定量反演经验模型. |
| 关 键 词： | 悬浮泥沙 反演模型 长江中游 |
| 文章编号： | 1000-7849（2006）02-0099-04 |
| 收稿时间： | 2005-09-12 |
| 修稿时间： | 2005-09-12 |
Preliminary Study on Remote Sensing of Suspended Sediment Concentration in the Middle Yangtze River Using MODIS |
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| LIU Can-de,HE Bao-yin,LI Mao-tian,Ren Xian-you.Preliminary Study on Remote Sensing of Suspended Sediment Concentration in the Middle Yangtze River Using MODIS[J].Geological Science and Technology Information,2006,25(2):99-102. | |
| Authors: | LIU Can-de HE Bao-yin LI Mao-tian Ren Xian-you |
| Abstract: | Remote sensing techniques are used widely to observe water bodies.Among satellite sensors commonly used for water quality studies,the Moderate-resolution Imaging Spectroradiometer(MODIS) has potential in water quality monitoring,because of its moderate spatial resolution and high temporal resolution.In this paper,the utility of MODIS data for suspended sediment monitoring in the middle Yangtze River is investigated.It is concluded that suspended sediment concentration correlates well with reflectance values(R_1-R_2)/(R_1 R_2) retrieved from MODIS 250 m image data(R~2=0.72,n=41).Based on this correlation,the empirical model of suspended sediment concentration is obtained in the middle Yangtze River from MODIS.It is shown that it is useful for MODIS data to monitor this parameter of water quality. |
| Keywords: | MODIS |
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