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Extraction of Soil Wetness Information and Application to Distribution-Type Rainfall-Runoff Model Utilizing Satellite Image Data and GIS  

Lee, Jin-Duk (금오공과대학교 토목환경공학부)
Lee, Jung-Sik (금오공과대학교 토목환경공학부)
Hur, Chan-Hoe (금오공과대학교 측량및지형공간정보연구실)
Kim, Suk-Dong (금오공과대학교 대학원 토목공학과)
Publication Information
Journal of Korean Society for Geospatial Information Science / v.19, no.3, 2011 , pp. 23-32 More about this Journal
Abstract
This research uses a distributed model, Vflo which can devide subwater shed into square grids and interpret diverse topographic elements which are obtained through GIS processing. To use the distributed model, soil wetness information was extracted through Tasseled Cap transformation from LANDSAT 7 $ETM^+$ satellite data and then they were applied to each cell of the test area, unlike previous studies in which have applied average soil condition of river basin uniformly regardless of space-difference in subwater shed. As a resut of the research, it was ascertained the spatial change of soil wetness is suited to the distributed model in a subwater shed. In addition, we derived out a relation between soil wetness of image collection time and 10 days-preceded rainfall and improved the feasibility of weights obtained by the relation equation.
Keywords
GIS; Distributed Model; Vflo; Soil Wetness Information; LANDSAT 7; $ETM^+$; Remote Sensing;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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