Abstract:The strain observation data of Xuzhou station recorded abnormal phenomena before the M5.5 earthquake in Pingyuan, and the abnormal phenomena continued to return to normal after the M2.6 earthquake occurred in Heze. The timing of the anomaly is highly consistent with the occurrence of two earthquakes. By using precision analysis, difference analysis, minute value anomaly analysis and wavelet analysis, we determine that the abnormal variation of the strain data of Xuzhou platform before and after the earthquake is related to the earthquake.
GAO Mingzhi,ZHANG Cen,HAO Ran et al. Analysis of Abnormal Changes of Volumetric Strain before and after Pingyuan M5.5 Earthquake[J]. jgg, 2024, 44(6): 643-647.