Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Estimation of Tsunami Risk Zoning on the Coasts Adjacent to the East Sea from Hypothetical Earthquakes

공백역 지진에 의한 동해에 연한 해안에서의 지진해일 위험도 산정

  • Published : 2002.10.01
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Abstract

Prognostic characteristics of hypothetical tsunamis in the East Sea are further discussed based on numerical simulations using linear long wave theory than the last paper(Choi et al). As for choice of source zones, we used 28 cases based on fault parameters of hypothetical earthquakes and 76 cases based on simple initial surface shapes of tsunamigenic earthquakes selected by the seismic gap theory. As a result, the wave heights along the whole coastline adjacent to the East See of tsunamis due to these hypothetical earthquake are presented. Analyses also lead us to conclude that the selection of geographical zones with low risk of tsunamis can be used as a tool for coastal disaster mitigation planning.

전회의 논문(Choi et al)에 이어 본 논문에서는 동해에서의 가상해저지진에 의한 지진해일의 예단적 특성을 동해에 연한 전해안에 걸쳐 논하였는데 재해를 유발시킬 수 있는 지진해일의 근원역은 공백역이론으로부터 선택되었다. 선형장파이론에 근거한 수치모형을 채택하여 28개의 선정된 자세한 단층 파라미터를 갖는 가상지진(4경우 실제지진 포함)과 단순화시킨 형태의 초기 수면형에 의한 76개 사상의 지진해일 시뮬레이션을 수행하여 전파 및 해안에서의 지진해일의 파고를 산정하는 데 적용 되었다. 결과로서 동해에 연한 전해안 전역에 전파되는 지진해일의 특성과 해안역에서의 지진해일의 파고 분포가 산정되어 지진해일 재해위험도가 상대적으로 낮은 지리적 위치를 구획화하여 제시함으로써 해안재해경감대책의 도구로서 활용될 수 있게 하였다.

Keywords

References

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