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中国西部强震活动与武都应变变化关系分析
ANALYSIS ON RELATIONSHIP BETWEEN STRONG SEISMICITY IN WESTERN CHINA AND STRAIN VARIATION IN WUDU STATION
【摘要】 武都RZB-Ⅱ型钻孔式压容应变仪自1992年投入观测以来,至今已多次记录完整的地震波形。选取了1993年以来的中国西部地区所发生的几次7级以上强震,通过对震前武都应变资料的分析后发现这几次地震前武都应变资料均存在着显著的中、短临异常变化;并对出现前兆异常的机理进行了初步分析。
【Abstract】 Many complete seismic waves have recorded by RZB-Ⅱ strain instrument since 1992 at Wudu station.The strain data of strong earthquakes with M s≥7.0 in western China since 1993 are analyzed,and the result shows that these data appeared obviously middle-short-impending anomalies.The precursory anomalies are also analyzed in the paper.
【关键词】 强震活动;
前兆异常;
应力应变场;
中国西部;
【Key words】 Strong seismicity; Precursory anomaly; Stress and strain field; Western China;
【Key words】 Strong seismicity; Precursory anomaly; Stress and strain field; Western China;
- 【文献出处】 高原地震 ,Plateau Earthquake Research , 编辑部邮箱 ,2004年03期
- 【分类号】P315.727
- 【下载频次】40