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http://dx.doi.org/10.3741/JKWRA.2004.37.3.233

Spatial Analysis of Flood Rainfall Based on Kriging Technique in Nakdong River Basin  

Yoon, Kang-Hoon (한국건설기술연구원 수자원연구부)
Seo, Bong-Chul (한국건설기술연구원 수자원연구부)
Shin, Hyun-Suk (부산대학교 토목공학과)
Publication Information
Journal of Korea Water Resources Association / v.37, no.3, 2004 , pp. 233-240 More about this Journal
Abstract
Most of hydrological analyses in the field of water resources are launched by gathering and analyzing rainfall data. Several methods have been developed to estimate areal rainfall from point rainfall data and to fill missing or ungaged data. Thiessen and Reciprocal Distance Squared(RDS) methods whose parameters are only dependent on inter-station distance are classical work in hydrology, but these techniques do not provide a continuous representation of the hydrologic process involved. In this study, kriging technique was applied to rainfall analysis in Nakdong river basin in order to complement the defects of these classical methods and to reflect spatial characteristics of regional rainfall. After spatial correlation and semi-variogram analyses were performed to perceive regional rainfall property, kriging analysis was performed to interpolate rainfall data for each grid Thus, these procedures were enable to estimate average rainfall of subbasins. In addition, poor region of rainfall observation was analyzed by spatial interpolation error for each grid and mean error for each subbasin.
Keywords
Kriging; Spatial analysis; Spatial correlation; Semi-variogram; Grid rainfall;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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