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学科主题: 地理学::自然地理学
题名: Estimating continental river basin discharges using multiple remote sensing data sets
作者: Sichangi, AW (Sichangi, Arthur W.)1, 3; Wang, L (Wang, Lei)1, 2; Yang, K (Yang, Kun)1, 2; Chen, DL (Chen, Deliang)4; Wang, ZJ (Wang, Zhongjing)5, 6; Li, XP (Li, Xiuping)1; Zhou, J (Zhou, Jing)1; Liu, WB (Liu, Wenbin)1; Kuria, D (Kuria, David)7
通讯作者: Wang, L
刊名: REMOTE SENSING OF ENVIRONMENT
发表日期: 2016
DOI: 10.1016/j.rse.2016.03.019
卷: 179, 期:0, 页:36-53
收录类别: SCI
合作性质: 国际
文章类型: Article
英文摘要: Rivers act as a source of fresh water for terrestrial life, yet the discharges are poorly documented since the existing direct observations are inadequate and some observation stations have been interrupted or discontinued. Discharge estimates using remote sensing thus have a great potential to supplement ground observations. There are remote sensing methods established to estimate discharge based on single parameter derived relationships; however, they are limited to specific sections due to their empirical nature. In this study, we propose an innovative method to estimate daily discharges for continental rivers (with river channel widths >800 m (Birkett and Beckley, 2010)) using two satellite derived parameters. Multiple satellite altimetry data and Moderate Resolution Imaging Spectroradiometer (MODIS) data are used to provide a time series of river stages and effective river width. The derived MODIS and altimetry data are then used to optimize unknown parameters in a modified Manning's equation. In situ measurements are used to derive rating curves and to provide assessments of the estimated results. The Nash-Sutcliffe efficiency values for the estimates are between 0.60 and 0.97, indicating the power of the method and accuracy of the estimations. A comparison with a previously developed empirical multivariate equation for estimating river discharge shows that our method produces superior results, especially for large rivers. Furthermore, we found that discharge estimates using both effective river width and stage information consistently outperform those that only use stage data. (C) 2016 The Authors. Published by Elsevier Inc.
语种: 英语
WOS记录号: WOS:000375506100004
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7675
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China
2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.Univ Gothenburg, Dept Earth Sci, Gothenburg, Sweden
5.Tsinghua Univ, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China
6.Tsinghua Univ, Dept Hydraul Engn, Beijing 100084, Peoples R China
7.Dedan Kimathi Univ Technol, Nyeri, Kenya

Recommended Citation:
Sichangi, AW ,Wang, L ,Yang, K ,et al. Estimating continental river basin discharges using multiple remote sensing data sets[J]. REMOTE SENSING OF ENVIRONMENT,2016,179(0):36-53.
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