Estimation of the flash flood severity using runoff hydrograph and flash flood index.
Estimation of the flash flood severity using runoff hydrograph and flash flood index.
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DOI：
10.3741/jkwra.2008.41.2.185
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发表时间：
2008-01-01
期刊：
影响因子：
--
通讯作者：
Kim, H. S.
中科院分区：
文献类型：
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作者：
Kim ByungSik, Kim ByungSik;Kim HungSoo, Kim HungSoo;Kim, H. S.
从气候学角度对山洪进行了研究，考虑了降雨的时间和空间特征。然而，我们对用于山洪研究的径流过程线不感兴趣。因此，我们这项研究的目标是应用 Bhaskar 等人的工作。 al (2000) 研究了径流过程线，以代表韩国的山洪暴发，并区分山洪暴发事件和一般洪水事件。也就是说，我们通过使用径流过程线估计山洪指数来量化山洪的严重程度。本研究估算了山洪指数，以调查汉江流域 101 次洪水事件的山洪相对严重程度。我们还对 2006 年 7 月发生的强降雨造成的洪水事件的山洪严重程度进行了量化。结果，江原道的山洪比汉江流域其他地区更严重，中郎川等城市地区也出现了严重的山洪。我们将2006年7月的山洪暴发分为第一期到第三期进行分析。从分析中我们知道，7月第1期显示首尔地区发生了严重山洪，第2期显示江原道发生了严重山洪。
The flash flood has been studied in the climatological aspect which considers temporal and spatial characteristics of rainfall. However, we have not interested in runoff hydrograph for flash flood study. Therefore, our objectives of this study are to apply a work of Bhaskar et. al (2000) which studied runoff hydrograph to represent the flash flood to Korea and also to distinguish flash flood event from general flood event. That is, we quantified the severity of flash flood by estimation of flash flood index using runoff hydrograph. This study estimated the flash flood index for investigating the relative severity of flash flood in Han river basin with 101 flood events. Also we quantified the flash flood severity for flood event by heavy rainfall occurred in July of 2006. As a result, Kangwon-do province showed more severe flash flood than other areas in Han river basin and urban area such as Jungrang cheon stream also showed severe flash flood. We analyzed a flash flood of July of 2006 by dividing July into 1st to 3rd terms. From the analysis we knew that the 1st term of July showed the severe flash flood was occurred in Seoul area and the 2nd term showed it was occurred in Kangwon-do province.