摘要
以安徽省钻孔体应变观测数据为基础,应用小波分析法对体应变观测数据进行了细节分析,选择小波分析结果进行超限率计算,获得了合肥、嘉山、滁州和六安台的强度超限率和数量超限率。并将超限率变化与2012年以来安徽省发生的M_(L)4.0级以上地震进行对比分析发现,2014年4月20日霍山M_(L)4.7级地震前合肥、六安、滁州和嘉山台体应变小波分析结果的强度超限率和数量超限率都有一定程度的异常变化。
Base on the observation data of volumetric strain in Anhui province,this paper analyzes these original data in detail by using the wavelet analysis,selects the wavelet analysis results to calculate the overrun rate,and obtains the intensity overrun rate and quantity overrun rate of Hefei,Jiashan,Chuzhou and Lu'an Seismic Stations.By comparing the overrun rate changes with the earthquakes with M_(L)≥4.0 in Anhui Province since 2012,it is found that there are some anomalous changes in the intensity overrun rate and the quantity overrun rate before the Huoshan M_(L) 4.7 earthquake on April 20th,2014 at Hefei,Jiashan,Chuzhou and Lu'an Seismic Station.
作者
郑海刚
李军辉
王雪莹
何康
王俊
李玲利
ZHENG Haigang;LI Junhui;WANG Xueying;HE Kang;WANG Jun;LI Lingli(School of Earth and Space Sciences,University of Science and Technology of China,Hefei 23002,China;Anhui Earthquake Agercy,Hefei 23003,China;Mengcheng Geophysics National Field Scientific Observation and Research Station,Bozhou 233500,China)
出处
《华南地震》
2021年第1期9-15,共7页
South China Journal of Seismology
基金
安徽省地震科技创新专项(CX201803)。
关键词
小波-超限率
霍山地震
体应变
异常提取
Wavelet-Overrun rate
Huoshan M_(L)4.7 earthquake
Volumetric strain
Anomaly extraction