安康地区地形变资料同震形变波特征分析  

Study on co-seismic deformation wave characteristics of crustal deformation observation records in Ankang area

作　　者：张雪娟 张创军[2] 王玥明 邵若潼 古云鹤[2] Zhang Xuejuan;Zhang Chuangjun;Wang Yueming;Shao Ruotong;Gu Yunhe(Ankang Earthquake Monitoring Center Station,Shaanxi Earthquake Agency,Shaanxi Ankang 725029,China;Shaanxi Earthquake Agency,Shaanxi Xi’an 710068,China)

机构地区：[1]陕西省地震局安康地震监测中心站,陕西安康725029 [2]陕西省地震局,陕西西安710068

出　　处：《地震科学进展》2022年第10期487-494,共8页Progress in Earthquake Sciences

基　　金：陕西省地震局启航与创新课题(QC202009)资助。

摘　　要：利用安康地区3个形变台2017—2020年地形变资料,对比分析6套形变仪器的映震能力,并从面波延迟时间、最大响应幅度及同震持续时间等方面系统探讨同震形变波的特征参数与震源参数的关系,获知形变仪器映震效能的影响因素和同震形变波的物理分布特征。结果表明:形变仪器的映震能力受仪器自身响应特性、地下介质特性及仪器系统误差等因素的影响;同震形变波物理分布特征表明面波延迟时间与震中距、同震响应最大幅度与震级、同震持续时间与震级及震中距之间存在一定的比例关系。Based on the observation records of deformation stations in Ankang area from 2017 to 2020,we compared and analyzed the earthquake-reflecting capacity of six sets of instruments,and systematically discussed the relationship between the source parameters and the characteristic parameters of co-seismic deformation wave from the delay time of surface wave,the biggest shock and duration,and obtained the influencing factors of the earthquakereflecting capacity of deformation instruments and the physical distribution characteristics of co-seismic deformation wave.The result shows that the earthquake-reflecting capacity of instrument is related to the response characteristics and systematic error of instrument,the characteristics of underground medium;The physical distribution characteristics of co-seismic deformation wave show that there are linear or proportional distribution relationship in a certain degree between the delay time of surface wave and the epicenter distance of earthquakes,the biggest shock of co-seismic and magnitude,the duration time of co-seismic and magnitude and epicenter distance.

关 键 词：地形变 同震形变波 映震能力 物理分布特征 

分 类 号：P315.725[天文地球—地震学]