2020年1月16日库车M_(S)5.6地震前库尔勒地震台部分资料异常特征

Characteristics of Some Data Anomalies at Korla Seismic Station before Kuche MS5.6 Earthquake on January 16^(th),2020

2020年1月16日新疆库车县发生M_(s)5.6地震,地震发生后对库尔勒地震台部分资料出现的中短期异常进行识别分析。得出,地震发生前“库米什地震窗”M_(L)≥1.0级地震月频次出现高值异常,库尔勒台尾波持续时间比值、尾波衰减系数、周期比值出现低值异常,库尔勒台时间扫描计算AC值、A(b)值、P(b)值、最小二乘法b值等4个参数超限,这些中短期异常与库车5.6级地震对应较好。

The M_(S)5.6 earthquake occurred in Kuche County,Xinjiang on January 16th,2020.After the earthquake,the medium and short term anomalies in some data from Korla Seismic Sation were identified and analyzed.It is concluded that the monthly frequency of earthquakes with M_(L)≥1.0 in the"kumishi seismic window"has high value anomaly before the earthquake,and the ratio of coda duration time,coda attenuation coefficient and period ratio of The Korla Station appears low value anomaly;the four parameters such as AC value,A(b),P(b)value and least square method b value calculated by time scanning of Korla Station are beyond the limits.These medium and short term anomalies correspond well with the Kuche M_(S)5.6 earthquake.