大地测量与地球动力学2025，Vol.45Issue(6)：574-579,6.DOI:10.14075/j.jgg.2024.07.320
重庆武隆5.0级地震序列微震识别及活动性分析
Microseismic Identification and Activity Analysis of the Wulong Ms5.0 Earthquake Sequence in Chongqing
摘要
Abstract
Using continuous seismic waveforms from the Chongqing seismic network for one week fol-lowing the Wulong Ms5.0 earthquake(November 23 to November 30,2017),we employed the seismic detection and location program PALM to conduct microseismic detection and precise relocation of this earthquake sequence.The detection resulted in 1 558 seismic events,which is 4.2 times the number of events in the Chongqing seismic network catalog.After relocation,the minimum magnitude of com-pleteness(Mc)of the microseismic catalog decreased to ML0.1,significantly enhancing the complete-ness of the earthquake catalog.This indicates that PALM has high efficiency and accuracy in micro-seismic detection.The detected microseismic sequence clustered in an area approximately 5 km from the Wenfu fault,with depths concentrated between 5 km and 10 km,located at the bottom of the Wu-long triangular tectonic zone.Based on the spatial distribution of the aftershocks,it is inferred that the causative structure of the earthquake might be a concealed fault at the base of the Wenfu fault.关键词
PALM/模板匹配/微震检测/武隆地震Key words
PALM/template matching/microseismic detection/Wulong earthquake分类
地球科学引用本文复制引用
陈凯,易江,张英杰,李翠平,耿波..重庆武隆5.0级地震序列微震识别及活动性分析[J].大地测量与地球动力学,2025,45(6):574-579,6.基金项目
中国地震局"三结合"课题(3JH-202401084) （3JH-202401084）
重庆市地震局科研课题. Combination Project with Monitoring,Prediction and Scientific Research of Earthquake Technology,CEA,No.3JH-202401084 （）
Project of Chongqing Earthquake Agency. （）
