Abstract

최근, 태평양 지진대 주변에서 급작스런 해저지진에 의한 대규모의 지진해일이 빈번히 발생하고 있다. 이러한 지진해일은 심각한 재산 및 인명피해를 발생시켜왔다. 따라서, 지진해일 피해를 경감시키기 위한 적절한 대책이 수립되어야한다. 지진해일 방재정책의 효율성을 향상시키기 위해 확률적 개념을 사용하여 임원항에서의 지진해일 위험지역을 선정하였다. 시뮬레이션된 지진해일이 규정된 기준을 초과하여 범람할 확률이 범람지역의 각 격자점에서 계산되었다. 범람확률을 계산하기 위해, 확률도시 상관계수 검정을 사용하여 범람데이터의 확률분포형이 결정되었다. 계산된 범람확률은 최대범람높이의 분포 경향과 일치성을 보임을 알 수 있었다. Recently, catastrophic tsunamis triggered by impulsive undersea earthquakes have occurred frequently subduction zones around the Pacific Ocean. These tsunamis have caused loss of human lives and devastating property damage. Thus, proper countermeasures to mitigate tsunami damages should be made. To increase the efficacy of the tsunami disaster prevention policy, a tsunami hazard area at Imwon Port is determined by using a probability concept. The probability of the simulated tsunami flooding exceeding a prescribed criterion is calculated at each grid point of an inundated area. To calculate the flooding probability, a probability distribution type is determined by probability plot correlation coefficient(PPCC) test. The calculated flooding probability agrees reasonably with the distribution tendency of the maximum flooding height.

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