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- W2070357180 abstract "본 연구에서는 극치강우의 시간분포 연구를 위하여 서울지점 우량관측소의 자기기록지를 1분단위로 독취한 MMR(minutely data using the magnetic recording)자료와 최근 들어 관측을 시작한 AWS (automatic weather system) 분단위기상관측 자료를 이용하여 연최대치 계열의 중앙값을 기준으로 한 POT(peaks over threshold) 계열 추출을 통하여 강우의 최적 시간분포 모형을 개발하였다. 기존 Huff 방법에서의 최대 단점인 지속기간별 시간분포 변화 특성을 고려하지 못하는 점과 강우사상별 강우총량에 대한 기준강우량의 일괄적용 등의 문제를 개선하였으며, 분단위 관측자료의 가중치 적용을 통한 순위결정으로 최빈분위를 선택하고 IQR (interquartile range) matrix의 적용을 통한 Quartile별 호우사상을 추출하는 방법을 제안하였다. 마지막으로 추출된 분단위 무차원 단위우량주상도에 핵밀도함수를 적용하여 자료의 크기와 분포 특성을 고려한 지속기간별 최적 시간분포형을 유도하였다. In this study, we have developed an optimal time distribution model through extraction of peaks over threshold (POT) series. The median values for annual maximum rainfall dataset, which are obtained from the magnetic recording (MMR) and the automatic weather system(AWS) data at Seoul meteorological observatory, were used as the POT criteria. We also suggested the improved methodology for the time distribution of extreme rainfall compared to Huff method, which is widely used for time distributions of design rainfall. The Huff method did not consider changing in the shape of time distribution for each rainfall durations and rainfall criteria as total amount of rainfall for each rainfall events. This study have suggested an extracting methodology for rainfall events in each quartile based on interquartile range (IQR) matrix and selection for the mode quartile storm to determine the ranking cosidering weighting factors on minutely observation data. Finally, the optimal time distribution model in each rainfall duration was derived considering both data size and characteristics of distribution using kernel density function in extracted dimensionless unit rainfall hyetograph." @default.
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- W2070357180 date "2012-03-31" @default.
- W2070357180 modified "2023-10-17" @default.
- W2070357180 title "A Study on Optimal Time Distribution of Extreme Rainfall Using Minutely Rainfall Data: A Case Study of Seoul" @default.
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- W2070357180 doi "https://doi.org/10.3741/jkwra.2012.45.3.275" @default.
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