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http://dx.doi.org/10.11108/kagis.2012.15.3.103

Development of a Multi-Site Calibration Module of Distributed Model - The Case of GRM -  

Choi, Yun-Seok (Water Resources Research Division, Korea Institute of Construction Technology)
Choi, Cheon-Kyu (Water Resources Research Division, Korea Institute of Construction Technology)
Kim, Kyung-Tak (Water Resources Research Division, Korea Institute of Construction Technology)
Publication Information
Journal of the Korean Association of Geographic Information Studies / v.15, no.3, 2012 , pp. 103-118 More about this Journal
Abstract
A distributed model can easily obtain discharge at any grids spatially distributed in a watershed. But if there are subwatersheds which have various characteristics in a watershed, it is needed to apply a model calibrated at each subwatershed to obtain reliable simulation results for each subwatershed. In this study, a multi-site calibration module that can calibrate a distributed model at each subwatershed using observed flow data was developed. Methods to select multi-site calibration parameters, to apply subwatershed parameters, and to set subwatershed network information are suggested. Classes to implement multi-site calibration technique are designed and a GUI was developed, and procedures for runoff modelling using subwatershed parameters were established. Multi-site calibration module was applied to Sunsan watershed($977km^2$) of Nakdong river basin. Application results showed that the multi-site calibration technique could be applied effectively to model the calibration for each subwatershed, and the simulation results of subwatershed were improved by the application of multi-site calibration.
Keywords
Multi-Site Calibration; Distributed Model; Subwatershed Parameters; Rainfall-Runoff;
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Times Cited By KSCI : 4  (Citation Analysis)
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