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敦化地震台2010年9月钻孔应变观测曲线异常分析
Discussion of the abnormal curve record by borehole strainmeter at Dunhua in September 2010
【摘要】 对敦化地震台2010年9月10日起YRY-4钻孔应变观测曲线异常进行分析,排除干扰的可能性,确认为敦化地区地质活动的真实反映。分析认为,该异常为2011年3月11日13:46:21时日本本州东海岸附近海域9.0级地震孕震过程中,太平洋板块和欧亚板块挤撞的真实反映。
【Abstract】 We analysis the anomaly curve of YRY-4 borehole strain observation in Dunhua Seismic Station on September 10,2010.Eliminating the possibility to been caused by the abnormal interference,it is comf irmed that the anomaly is the true reflection of tectonic activity in Dunhua area.The analysis suggests that this anomaly is the true reflection of the squeeze of Pacific plate and Eurasian plate during the seismogenic process in the 9.0 earthquake near east coast of Japan on 13:46:21,March 3,2011.
【关键词】 应变异常;
脉冲;
反弹;
剪应变;
板块挤撞;
日本地震;
短临异常;
【Key words】 strain anomalies; pulse; rebound; shear strain; the collision of the plate; the Japanese earthquake; imminent anomaly;
【Key words】 strain anomalies; pulse; rebound; shear strain; the collision of the plate; the Japanese earthquake; imminent anomaly;
- 【文献出处】 地震地磁观测与研究 ,Seismological and Geomagnetic Observation and Research , 编辑部邮箱 ,2013年Z1期
- 【分类号】P315.6
- 【被引频次】1
- 【下载频次】8