2013年芦山M_S7.0地震的震前及临震应变异常

来源 :地震学报 | 被引量 : 37次 | 上传用户：longzy773

【摘要】

：

距离芦山地震震中70km的姑咱地震台YRY四分量钻孔应变仪2013年4月16—19日记录到8次幅度达到十倍固体潮幅的张性应变阶跃,这在该仪器6年多运行期间尚属首次.这些应变异常与芦山地震在时间、空间上相关;应变异常的主压应力方向与震前宝兴水压致裂地应力测量主压应力方向相近,并与震前5个月中长达3个月的应变异常主压应力方向一致;应变阶跃起始与远震震波同时到达.综上认为,4月16—19日的应变异常有可

【作者】

：

池顺良刘琦池毅邓涛廖成旺阳光张贵萍陈洁

【出处】

：

地震学报

【发表日期】

：

2013年03期

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2013年芦山M_S7.0地震的震前及临震应变异常

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