易县地震台形变资料对汶川8.0级大地震的反应
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摘要
运用易县地震台数字化形变观测资料分析汶川8.0级地震时出现的同震形变响应和震前一些测项的异常变化。各手段出现的地震扰动、同震阶跃具有共同特征,反映了当地应变场在地震影响下产生的波动及调整过程;部分测项震前出现的异常变化与地震发生时间较为吻合,可能包含一定的前兆信息。
Coseismic deformation responses of Wenchuan M8.0 earthquake and anomalies from some observations before the earthquake are analyzed with the digital deformation data in Yixian Seismostation.Seismic disturbance and coseismic step of all observation items have some common characteristics,which reflects the the fluctuation and adjustment process of local strain field under the influence of the earthquake.Anomalies of some observation items before the earthquake,which is consistent relatively well with the time of the earthquake,may include some precursory information.
引文
[1]李占录,苏树朋,支树明,等.昆仑山口西8.1级地震易县台潮汐形变图像浅析[J].大地测量与地球动力学,2004,24(4):82-84.
    [2]牛福安,张晶,吉平.强地震引起的同震形变效应[J].内陆地震.2005,19(1):1-7.
    [3]陈德福.地壳形变地力学观测与研究[M].北京:海洋出版社,1993:167-173.
    [4]平建军,张永仙,张清荣,等.华北地区地震短期异常分析及其前兆信息量的提取与计算[J].华北地震科学,2003,21(3):1-7.
    [5]张跃刚,帅平,胡新康,等.从GPS观测看华北地区的形变场演化[J].大地测量与地球动力学,2006,26(1):36-41.
    [6]张跃刚,胡新康.华北地区块体及其边界的相对运动[J].大地测量与地球动力学,2005,25(1):47-50.

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