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[1]REN Yefei,LIU Jie,LIU Ye,et al.Impact of Earthquake Source Kinematic Rupture Process on the Potential Tsunami in the Manila Subduction Zone[J].Journal of Seismological Research,2024,47(04):541-552.[doi:10.20015/j.cnki.ISSN1000-0666.2024.0057 ]

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Impact of Earthquake Source Kinematic Rupture Process on the Potential Tsunami in the Manila Subduction Zone

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: 47 Number of periods: 2024 04 Page number: 541-552 Column: Public date: 2024-08-20

Title:: Impact of Earthquake Source Kinematic Rupture Process on the Potential Tsunami in the Manila Subduction Zone

Author(s):: REN Yefei¹; 2; LIU Jie¹; 2; LIU Ye¹; 2; WANG Hongwei¹; 2; WEN Ruizhi¹; 2; (1.Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150000,Heilongjiang,China)(2.Key Laboratory of Earthquake Disaster Mitigation,Ministry of Emergency Management,Harbin 150000,Heilongjiang,China)

Keywords:: rupture velocity; rupture direction; the Manila subduction zone; tsunamis; numerical simulation

CLC:: P315.94

DOI:: 10.20015/j.cnki.ISSN1000-0666.2024.0057

Abstract:: Enhancing the understanding of the tsunami generation mechanism in the Manila subduction zone is of great significance to marine disaster prevention and reduction in the southeastern coastal areas of China.So far,scientistshave shown great concern about the impact of the kinematic source rupture process in the large-scale subduction zone on the tsunami generation.However,the impact of the earthquake source kinematic rupture process in the Manila subduction zone has not been investigated clearly yet.Based on the typical scenario of rupture model of the Manila subduction zone,this study conducts numerical simulations of tsunami scenarios with different rupture velocities and directions separately.It aims to evaluate and analyze the influence of rupture velocity and rupture direction on the propagation characteristics of the tsunami wave.The results show that when the rupture direction keeps the same,the slower the rupture velocity,the later the tsunami wave arrives and the smaller the peak wave height.When the rupture velocity keeps the same,the peak wave height at the sites in front of the rupture is much higher,and the wave at sites closer to the initial rupture location will arrive earlier,compared with the simulation results that do not consider the rupture kinematic process.Among the different scenarios,the arrival time of tsunami waves at the coastal sites may differ 10 minutes at most,and the maximum peak-wave value is about 1.5 times as large as the minimum peak-wave value.

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Last Update: 2024-08-20