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Journal of Korean Society of Coastal and Ocean Engineers > Volume 31(6); 2019 > Article
J Korean Soc Coast Ocean Eng 2019;31(6): 368-378. doi: https://doi.org/10.9765/KSCOE.2019.31.6.368
단층 파라미터에 따른 확률론적 지진해일 재해곡선의 민감도 분석
조명환1, 김건형2, 윤성범1
1한양대학교 건설환경공학과
Sensitivity Analysis According to Fault Parameters for Probabilistic Tsunami Hazard Curves
Myeong Hwan Jho1, Gun Hyeong Kim2, Sung Bum Yoon1
1Department of Civil and Environmental Engineering, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan, Gyeonggi-do 15588, Korea
Corresponding author: Sung Bum Yoon ,Tel: +82-31-400-5144, Email: sbyoon@hanyang.ac.kr
Received: November 18, 2019;  Revised: December 11, 2019.  Accepted: December 14, 2019.
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Logic trees for probabilistic tsunami hazard assessment include numerous variables to take various uncertainty on earthquake generation into consideration. Results from the hazard assessment vary in different way as more variables are considered in the logic tree. This study is conducted to estimate the effects of various scaling laws and fault parameters on tsunami hazard at the nearshore of Busan. Active fault parameters, such as strike angle, dip angle and asperity, are adjusted in the modelling of tsunami propagation, and the numerical results are used in the sensitivity analysis. The influence of strike angle to tsunami hazard is not as much significant as it is expected, instead, dip angle and asperity show a considerable impact to tsunami hazard assessment. It is shown that the dip angle and the asperity which determine the initial wave form are more important than the strike angle for the assessment of tsunami hazard in the East Sea.
Keywords: tsunami hazard analysis, logic trees, sensitivity analysis
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