摘要
利用随机有限断层法对武隆M_(S)5.0地震进行地震动模拟。震中100 km内4个台站的模拟结果表明,模拟得到的加速度时程、峰值加速度、反应谱均与实际记录较为一致;个别台站受模型参数、环境噪声和局部场地效应影响,与实际记录存在一定差异。对震中100 km内的323个网格点进行模拟,得到的地震动空间分布特征与现场烈度调查数据较为一致。本研究可以为重庆地区抗震设防和风险评估等工作提供数据支撑,对于减轻地震灾害具有理论和实践意义。
In this paper,the stochastic finite-fault method is used to simulate the ground motion of the Wulong M_(S)5.0 earthquake.The simulation results for four stations within 100 km of the epicenter showed that the simulated acceleration time histories,peak ground acceleration,and response spectra are generally consistent with the actual records.Some discrepancies were observed at individual stations due to the influence of model parameters and environmental noise.Simulations were performed for 323 grid points within 100 km of the epicenter,and the spatial distribution characteristics of the ground motion obtained were consistent with the intensity field survey data.This study provides data support for seismic fortification and risk assessment in the Chongqing region and has both theoretical and practical significance for mitigating earthquake disasters.
作者
陈凯
董娣
易江
王同军
耿波
CHEN Kai;DONG Di;YI Jiang;WANG Tongjun;GENG Bo(Chongqing Earthquake Agency,300 Jinshi Road,Chongqing 401120,China;Institute of Geophysics,CEA,5 South-Minzudaxue Road,Beijing 100081,China)
出处
《大地测量与地球动力学》
北大核心
2025年第8期818-822,共5页
Journal of Geodesy and Geodynamics
基金
中国地震局“三结合”课题(3JH-202401084)
重庆市地震局科技创新团队。
