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    近断层强地震动预测中的有限断层震源模型

    王海云 谢礼立 陶夏新

    王海云, 谢礼立, 陶夏新, 2008. 近断层强地震动预测中的有限断层震源模型. 地球科学, 33(6): 843-851.
    引用本文: 王海云, 谢礼立, 陶夏新, 2008. 近断层强地震动预测中的有限断层震源模型. 地球科学, 33(6): 843-851.
    WANG Hai-yun, XIE Li-li, TAO Xia-xin, 2008. Finite Fault Source Model for Predicting Near-Fault Strong Ground Motion. Earth Science, 33(6): 843-851.
    Citation: WANG Hai-yun, XIE Li-li, TAO Xia-xin, 2008. Finite Fault Source Model for Predicting Near-Fault Strong Ground Motion. Earth Science, 33(6): 843-851.

    近断层强地震动预测中的有限断层震源模型

    基金项目: 

    国家重点基础研究发展规划973项目 2007CB714201

    国家自然科学基金重大研究计划项目 90715038

    中国地震局工程力学研究所基本科研项目 2007B13

    详细信息
      作者简介:

      王海云(1964-), 男, 博士后, 副研究员, 主要从事震源模型、近断层地震动模拟研究.E-mail: haiyun@iem.net.cn

    • 中图分类号: P315.3

    Finite Fault Source Model for Predicting Near-Fault Strong Ground Motion

    • 摘要: 提出了近断层强地震动预测中建立活断层上设定地震有限断层震源模型的方法和步骤.首先,根据地震地质和地震活动性调查以及地球物理勘探等资料,确定活断层的空间方位和滑动类型; 然后,根据地震定标律确定活断层的宏观震源参数; 第三,将高强体模型与k平方滑动模型相结合,产生断层破裂面上的混合滑动分布.在此基础上,预测了与1994年Northridge地震断层类型、矩震级(Mw6.7)基本一致的设定地震的有限断层震源模型.最后,将预测的有限断层震源模型与基于地震学的、使用动力学拐角频率的地震动随机合成方法相结合,预测了1994年Northridge地震近断层12个基岩台站的加速度时程,并和实际记录进行了对比.结果表明,用上述方法和步骤建立的有限断层震源模型是可行、实用的.

       

    • 图  1  用混合滑动模型生成的设定地震(Mw6.7)的30个滑动分布中的12个

      Fig.  1.  Twelve of 30 slip distributions of scenario earthquake (Mw 6.7) generated by hybrid slip model

      图  2  1994年Northridge地震(Mw6.7)近断层12个基岩台站预测和记录加速度时程及其相应反应谱的比较

      Fig.  2.  Comparisons between predicted and recorded acceleration time histories and their response spectra for twelve near-fault stations in 1994 Northridge earthquake

      表  1  预测的设定地震(Mw6.7)的有限断层震源模型参数与1994年Northridge地震震源参数比较

      Table  1.   Comparison between parameter values of finite fault source models of both 1994 Northridge earthquake (Mw 6.7) and a scenario earthquake (Mw 6.7) on an active fault

      表  2  1994年Northridge地震近断层12个基岩台站的经纬度和震源距

      Table  2.   The geographic coordinates and source distances of twelve near-fault base-rock stations of 1994 Northridge earthquake for predicting ground motion

      表  3  1994年Northridge地震近断层基岩场地上地震动预测输入参数

      Table  3.   The input parameters for predicting ground motion of near-fault base-rock stations of 1994 Northridge earthquake (Mw 6.7)

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    出版历程
    • 收稿日期:  2007-12-31
    • 刊出日期:  2008-11-25

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