摘要
2025年1月7日西藏自治区定日县发生M S6.8级地震。文中采用中国地震局工程力学研究所地震动模拟预测云平台,结合运动学震源模型、区域公共速度模型和数字高程模型,模拟了近场地震波场及仪器烈度场。结果表明:在国家地震烈度速报与地震预警工程台网站点,模拟与测定仪器地震烈度相当;高烈度区主要分布在断层地表投影所在区域;模拟仪器地震烈度场与调查评定地震烈度场基本一致。在此基础上,综合西藏自治区现场调查数据和普查数据,评估了当地典型建筑(以土/石木结构为主)房屋震害以及人员伤亡,评估结果与实际结果相当。
On January 7,2025,an earthquake of magnitude M S6.8 struck Dingri County,Xizang Autonomous Region.In this paper,the near-field seismic wave field and instrumental intensity field were simulated using the strong ground motion simulation and prediction cloud platform of the Institute of Engineering Mechanics,China Earthquake Administration(CEA),combined with the kinematic seismic source model,the regional public velocity model and the digital elevation model.The simulated and measured instrumental seismic intensities are comparable at the stations of the National Seismic Intensity Rapid Reporting and Early Warning Project.The simulated high intensity zones are mainly distributed around the place of the surface projection fault,and the simulated instrumental seismic intensity field is basically the same as the survey seismic intensity field.On the basis,the earthquake damage to typical buildings(mainly earth/stone and wood structures)and casualties was evaluated and the evaluation results were also comparable to the actual data.
作者
谢志南
王帅
陈相兆
卢建旗
孙柏涛
马强
李山有
XIE Zhinan;WANG Shuai;CHEN Xiangzhao;LU Jianqi;SUN Baitao;MA Qiang;LI Shanyou(Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China;Key Laboratory of Earthquake Disaster Mitigation,Ministry of Emergency Management,Harbin 150080,China)
出处
《地震工程与工程振动》
北大核心
2025年第1期12-17,共6页
Earthquake Engineering and Engineering Dynamics
基金
国家自然科学基金项目(U2039209)
黑龙江省自然科学基金杰出青年项目(JQ2024E002)
兵团科技攻关项目(2024AB077)。
关键词
地震动模拟
仪器地震烈度
调查评定地震烈度
地震灾情应急评估
2025西藏定日M
S6.8地震
seismic ground motion simulation
instrumental seismic intensity
surveyed seismic intensity
emergency assessment of earthquake disaster situation
2025 M S6.8 Dingri,Xizang earthquake
