利用形变观测资料评估福建主要构造断裂孕震风险

Evaluation of Seismogenic Risk of Major Tectonic Faults in Fujian Province Based on Deformation Observation Data

将2009-2020年福建省GPS基准站、跨断裂流动GPS观测剖面及跨断层水准场地观测数据进行融合处理,采用Defnode负位错反演程序估算福建主要构造断裂的滑动速率、闭锁程度和滑动亏损速率分布,结合最小二乘配置方法计算福建地区主要构造断裂带附近地表水平应变率结果,以评估该地区主要构造断裂的孕震风险,为研判及划分地震重点危险区提供可靠的科学依据。

We use the observation data of GPS reference stations,GPS observation profiles of cross-fault flow and cross-fault leveling sites in Fujian province from 2009 to 2020 for fusion processing.We use negative dislocation model of Defnode to invert slip rate,fault locking and fault slip deficit rate of major tectonic faults in Fujian.Combined with the results of surface horizontal strain rate near the main tectonic fault zones in Fujian using the least square configuration method,we evaluate the seismogenic risk of major structural faults in Fujian,and provide reliable scientific criteria for the study and classification of key danger areas of earthquakes.