Journal of Korean Port Research (한국항만학회지)

Korean Institute of Navigation and Port Research (한국항해항만학회)
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Analysis of Field Observations on Characteristics of Stage-Discharge Relationshiup for Yangsan River

양산천 수위-유량관계 특성에 관한 현장관측 분석

  • Published : 2000.03.01
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Abstract

Derivation of stage-discharge relationship and characteristics for Yangsan river is presented in this paper. This research has been conducted as the second one after the first trial in 1997. The determination of discharge at a Yangsan river gauging was best made by measuring the flow velocities with a current meter and rod float. The rating curve obtained through 52 stage-discharge measurements on Yangsan river basin in 1999 is represented by Q=15.3540-140.6076H+182.44372H$^2$, which is discovered to be most excellent among other curves in reliability analysis. The observed stage-discharge data for Yangsan river was tested by HEC-RAS program, and reproduction of discharge by the induced curve was investigated and compared with the computational results. The rating curve of Yangsan river shows characteristics of Yangsan river more accurately compared with those separated in terms of water levels.

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