A Simple Enhanced Water Index (EWI) for Percent Surface Water Estimation   Using Landsat Data

doi:10.1109/JSTARS.2014.2387196

CORC > 北京大学 > 地球与空间科学学院

	A Simple Enhanced Water Index (EWI) for Percent Surface Water Estimation Using Landsat Data
	Wang, Shudong ; Baig, Muhammad Hasan Ali ; Zhang, Lifu ; Jiang, Hailiang ; Ji, Yuhe ; Zhao, Hengqian ; Tian, Jingguo
刊名	ieee journal of selected topics in applied earth observations and remote sensing
	2015
关键词	Enhanced Water Index (EWI) Modified Normalized Difference Water Index (MNDWI) percent surface water estimation remote sensing of environment IMAGERY FEATURES NDWI
DOI	10.1109/JSTARS.2014.2387196
英文摘要	To timely obtain accurate pixel water surface proportion information through remote sensing is extremely significant to the ecological restoration in inland river basins and for the precise management of water resources. In respect to the insufficient extraction of water surface proportion information present in pixels in most of the current water information models, a simple model Enhanced Water Index (EWI) based on Modified Normalized Difference Water Index (MNDWI) has been introduced. EWI, which is oriented toward the sub-pixel level analysis of water surface proportion mapping of inland river basin, has been put forward based on the analysis of typical spectral signatures such as desert, soil, and vegetation along with MNDWI in accordance with the Landsat TM band features. The analysis is done by using methods of pixel-based EWI value with different water proportions which are analyzed through the introduction of the linear hybrid simulation between the water body and the corresponding background. Lastly, the effect of EWI model has been tested in the medium and lower reaches of Tarim. The correction coefficient for sub-pixel level water surface proportion predicted by the EWI model and the experimental data is R-2 = 0.72. Results showed that the model was able to effectively extract the information about pixel water surface proportion in inland river basins. This study proves that EWI model has great potential in its application for water proportion mapping applications.; Engineering, Electrical & Electronic; Geography, Physical; Remote Sensing; Imaging Science & Photographic Technology; SCI(E); EI; 0; ARTICLE; ZhangLF@radi.ac.cn; 1; 90-97; 8
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/206500]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Wang, Shudong,Baig, Muhammad Hasan Ali,Zhang, Lifu,et al. A Simple Enhanced Water Index (EWI) for Percent Surface Water Estimation Using Landsat Data[J]. ieee journal of selected topics in applied earth observations and remote sensing,2015.
APA	Wang, Shudong.,Baig, Muhammad Hasan Ali.,Zhang, Lifu.,Jiang, Hailiang.,Ji, Yuhe.,...&Tian, Jingguo.(2015).A Simple Enhanced Water Index (EWI) for Percent Surface Water Estimation Using Landsat Data.ieee journal of selected topics in applied earth observations and remote sensing.
MLA	Wang, Shudong,et al."A Simple Enhanced Water Index (EWI) for Percent Surface Water Estimation Using Landsat Data".ieee journal of selected topics in applied earth observations and remote sensing (2015).