CAJ | 학술논문

根据地震海啸产生的条件，结合渤海海域的地形特征、地质构造、地震学特征和历史地震及海啸记录对渤海海域潜在的地震海啸进行了数值模拟研究。分析了渤海可能引发地震海啸的震源区域，讨论了渤海发生海啸灾害的可能性。文中通过数值模拟再现了渤海历史上几次规模较大的地震事件可能引发的海啸情景，研究分析了可能的地震海啸在渤海及周边海域的传播过程及波动特征。地震海啸传播模型采用基于四叉树原理的自适应网格加密技术，有效解决了局部分辨率与计算效率之间的矛盾。数值计算包括地震海啸产生及传播过程。利用该模型对渤海潜在的地震海啸进行了数值计算，基于数值计算结果定量阐述了渤海海域潜在地震海啸对渤海局部岸段及北黄海沿岸的影响，给出了渤海可能地震海啸危险性划分；研究结果将为我国海啸危险性分析和海啸预警技术研究工作提供技术支持。
근거지진해소산생적조건，결합발해해역적지형특정、지질구조、지진학특정화역사지진급해소기록대발해해역잠재적지진해소진행료수치모의연구。분석료발해가능인발지진해소적진원구역，토론료발해발생해소재해적가능성。문중통과수치모의재현료발해역사상궤차규모교대적지진사건가능인발적해소정경，연구분석료가능적지진해소재발해급주변해역적전파과정급파동특정。지진해소전파모형채용기우사차수원리적자괄응망격가밀기술，유효해결료국부분변솔여계산효솔지간적모순。수치계산포괄지진해소산생급전파과정。이용해모형대발해잠재적지진해소진행료수치계산，기우수치계산결과정량천술료발해해역잠재지진해소대발해국부안단급북황해연안적영향，급출료발해가능지진해소위험성화분；연구결과장위아국해소위험성분석화해소예경기술연구공작제공기술지지。
A numerical simulation study on potential earthquake-generated tsunami is carried out in the paper for Bohai Sea based on comprehensive consideration of the tsunamigenic conditions,topography feature,geological structure,seismological features and historical records about earthquake and tsunami. Tsunamigenic zones and possibility of tsunami hazards in Bohai Sea were analyzed and discussed respectively. Several local tsunamis were simulated by tsunami numerical model which was triggered by historical subduction earthquakes which have magni-tudes larger than MW7. 0 in Bohai Sea. The tsunami model adopted adaptive mesh refinement technology based on Quadtree principle. The contradiction between the local resolution and the computational efficiency was resolved by using adaptive mesh. Numerical computation including seabed deformation,tsunami propagating over deep and shallow water. Potential tsunami induced by a hypothetical earthquake with MW7. 8 was simulated using tsunami numerical model in this paper. Its propagation scenario and wave characteristics were analyzed around Bohai Sea re-gion. The impact of potential tsunami on Bohai Sea coasts and northern Huanghai Sea coasts was discussed quanti-tatively ground on the numerical calculation result. A preliminary tsunami hazards for Bohai Sea were classified. The study presented in this paper will serve as the technological support to the tsunami hazards analysis and the technology research of tsunami early warning.