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马衔山北缘断裂西段地震动场估计的震源模型

, PP. 60-66

Keywords: 近场地震动,混合震源模型,全局参数,局部参数

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Abstract:

为估计近场地震动场,研究了设定在邻近兰州市马衔山北缘断裂西段一个6.5级地震的震源模型。在这个混合震源模型中有2类震源参数。全局参数主要根据区域地壳结构、区域地震活动性和半经验标定公式确定。局部参数分两组,一组是描述凹凸体的,主要根据详细的活断层探查资料和标定公式确定;另一组是k平方模型参数,依标定公式估算。文中展示了生成震源模型的6个例子。最后,依选定的计算点随机合成的地震动反应谱选定了代表平均特征的震源模型。

References

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