대한토목학회논문집 (KSCE Journal of Civil and Environmental Engineering Research)

  • 제34권1호
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  • Pages.135-143
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  • 2014
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  • 1015-6348(pISSN)
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  • 2799-9629(eISSN)
대한토목학회 (Korean Society of Civil Engeneers)
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중앙태평양 엘니뇨의 쇠퇴특성에 따른 낙동강 유역의 태풍영향 분석

A Study on Typhoon Impacts in the Nakdong River Basin Associated with Decaying Phases of Central-Pacific El Niño

  • 김종석 (서울시립대학교 토목공학과) ;
  • 손찬영 (서울시립대학교 토목공학과) ;
  • 이주헌 (중부대학교 토목공학과) ;
  • 문영일 (서울시립대학교 토목공학과)
  • 투고 : 2013.08.14
  • 심사 : 2013.10.31
  • 발행 : 2014.02.01
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초록

본 연구에서는 중앙태평양 지역의 비정상적인 해수면 온도변화를 3가지 진화패턴(Prolonged-decaying, Abrupt-decaying, Symmetric-decaying)에 따라 분류하였으며, 이에 따른 한반도 영향 태풍을 중심으로 태풍의 발생지점 및 경로, 중심기압의 특성변화와 낙동강유역의 태풍 강우량 및 중호우사상의 발생빈도에 대한 특성변화를 분석하였다. 분석결과, Prolonged-decaying 해와 Symmetric-decaying 해의 경우, 낙동강 유역의 태풍에 의한 여름철 강우량 및 중호우사상의 발생빈도가 평년보다 크게 나타났다. 그러나, Abrupt-decaying 해의 경우, 태풍강우는 대체로 감소하는 패턴을 보이는 것으로 분석되었으며, 이는 태풍의 발생지점이 비교적 한반도에 근접하게 위치하며 태풍의 중심기압이 높고 태풍의 경로가 대체로 일본으로 이동하기 때문인 것으로 나타났다. 본 연구의 성과는 중앙태평양 엘니뇨의 진화패턴별 태풍활동특성 및 지역적 태풍강우 특성 분석을 통하여 침수피해를 저감하고 기후변화에 대비한 적응방안 수립에 유용한 기초자료로 활용될 수 있을 것으로 기대된다.

This study classified abnormal sea surface temperature changes of the central pacific region according to three evolution patterns. Focusing on typhoons that affect the Korean Peninsula, the research analyzed typhoon's occurrence spot and track, change in the central pressure characteristics, and the characteristics of change in typhoon precipitation and the number of occurrences of heavy rainfall in the Nakdong River Basin. As a result of analysis, in case of prolonged-decaying years and symmetric-decaying years, typhoon-related summer rainfall and heavy rainy days appeared to be higher than long-term average. But in case of abrupt-decaying years, the pattern of general decrease appeared. This is because typhoon's occurrence spot is located comparatively near the Korean peninsula, typhoon's central pressure is high, and typhoon's route generally moves to Japan. As the outcome, this study is expected to reduce flood damage through analyzing the characteristics of typhoon's activity according to CP El Ni$\tilde{n}$o evolution patterns and the characteristics of local typhoon rainfall. In addition, it is expected to provide useful information for establishing adaptation and mitigation to climate change.

키워드

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