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An Analysis of the Characteristics in Design Rainfall According to the Data Periods  

Oh, Tae-Suk (서울시립대학교 공과대학 토목공학과 수자원연구실)
Kim, Min-Seok (서울시립대학교 공과대학 토목공학과)
Moon, Young-Il (서울시립대학교 공과대학 토목공학과)
Ahn, Jae-Hyun (서경대학교 이공대학 토목공학과)
Publication Information
Journal of the Korean Society of Hazard Mitigation / v.9, no.4, 2009 , pp. 115-127 More about this Journal
Abstract
Recently, Natural disasters are increasing the damage according to the influence of the abnormal climate and climate change. This study analyzed change characteristic of Design Rainfall according to the different data periods. First, 14 observatories were selected at Meteorological Administration. Second, frequency analysis carried out 5 cases by different data periods. At the results of the frequency analysis, the design rainfall could confirm the increase in most areas of Korea. Also, the change and trend analysis carried out for characteristic analysis by design rainfall and observed rainfall. The change and trend analysis of observed annual maximum rainfall did not appeared, but the change and trend analysis of design rainfall significantly appeared using statistic methods. The result of the change and trend analysis, design rainfall increased in most areas of Korea. Although, it could be the necessity for reestimating defense ability of flood, existing river systems, and new establishment of structure about the change characteristic.
Keywords
Data period; Trend Analysis; Change Analysis; Frequency Analysis; Design Rainfall;
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