South China Sea Typhoon Hagibis enhanced Xinfengjiang Reservoir seismicity  

作　　者：Peng Zhang Xinlei Sun Yandi Zeng Zhuo Xiao Runqing Huang 

机构地区：[1]State Key Laboratory of Isotope Geochemistry,Guangzhou Institute of Geochemistry,Guangzhou 510640,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]College of Geosciences,Chengdu University of Technology,Chengdu 610059,China [4]College of Artificial Intelligence,Guangxi Minzu University,Nanning 530006,China

出　　处：《Earthquake Science》2024年第3期210-223,共14页地震学报（英文版）

基　　金：Strategic Priority Research Program(B)of the Chinese Academy of Sciences(No.XDB42020304);National Natural Science Foundation of China(No.42074059).

摘　　要：There was an evident increase in the number of earthquakes in the Xinfengjiang Reservoir from June to July 2014 after the landing of Typhoon Hagibis.To understand the spatial and temporal evolution of this microseismicity,we built a high-precision earthquake catalog for 2014 and relocated 2275 events using recently developed methods for event picking and catalog construction.Seismicity occurred in the southeastern part of the reservoir,with the preferred fault plane orientation aligned along the Heyuan Fault.The total seismic energy peaked when the typhoon passed through the reservoir,and seismicity correlated with typhoon energy.In contrast,a limited seismic response was observed during the later Typhoon Rammasun.Combining data regarding the water level in the Xinfengjiang Reservoir and seismicity frequency changes in the Taiwan region during these two typhoon events,we suggest that typhoon activity may increase microseism energy by impacting fault stability around the Xinfengjiang Reservoir.Whether a fault can be activated also depends on how close the stress accumulation is to its failure point.

关 键 词：TYPHOON seismicity analysis earthquake detection spatio-temporal evolution characteristics MICROSEISMS 

分 类 号：TV697.24[水利工程—水利水电工程]