临震微波动现象回溯性研究——以青海地区为例  

Retrospective Study on Phenomenon of Microwave Fluctuation Impending Earthquake:A Case Study in Qinghai Region

作　　者：余娜 王建军[3] 张晓清 杨晓霞 YU Na;WANG Jianjun;ZHANG Xiaoqing;YANG Xiaoxia(Geodynamics Field Observation and Research Station of the Qinghai-Tibet Plateau,Golmud,153 Tsaidam Road,Xining 810005,China;Qinghai Earthquake Agency,153 Tsaidam Road,Xining 810005,China;Gansu Earthquake Agency,450 West-Donggang Road,Lanzhou 730000,China)

机构地区：[1]青海格尔木青藏高原内部地球动力学野外科学观测研究站,西宁市810005 [2]青海省地震局,西宁市810005 [3]甘肃省地震局,兰州市730000

出　　处：《大地测量与地球动力学》2024年第4期336-340,共5页Journal of Geodesy and Geodynamics

基　　金：青海格尔木青藏高原内部地球动力学野外科学观测研究站专项;国家重点研发计划(2021YFC3000705-04);青海省基础研究计划(2023-ZJ-770);青海省重点研发与转化计划(2021-SF-151)。

摘　　要：为进一步检验临震微波动异常跟踪指标,基于兰州临震微波动实时监控与跟踪系统的数据资料,对青海地区2020~2022年5.0级及以上地震震中距150 km以内台站的波形资料进行分析。结果表明,震中距150 km以内的台站几乎都能记录到临震微波动事件;达到临震微波动异常指标的台站不是震中距最小的测震台站,这可能与区域构造应力、发震断层走向及地震破裂过程等有关;主震震级越大,震前出现临震微波动异常指标的可能性越大。In order to further test the tracking indicators of microwave fluctuation impending earthquake,based on the data from real-time monitoring and tracking system of microwave fluctuation impending earthquake in Lanzhou,we analyze the waveform data recorded by stations within 150 km of earthquakes of magnitude 5.0 and above in Qinghai region from 2020 to 2022.We believe that almost all stations within a radius of 150 km from the epicenters can record impending microwave motion events.The stations that achieve the index of microwave fluctuation impending earthquake anomalies are not the closest to the epicenter.This may be related to regional tectonic stress,strike of seismogenic fault and process of earthquake rupture.Moreover,the larger the magnitude of the main earthquake,the greater the likelihood of the occurrence of the index of microwave fluctuation impending earthquake anomalies.

关 键 词：临震微波动 检验 5.0级及以上地震 青海地区 

分 类 号：P315[天文地球—地震学]