Seismic source function for an underground explosion
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摘要: 应用近场(震中距为几公里至几十公里)的地表地运动测试数据来研究爆炸震源特性,将近场地震波传播介质近似为均匀半空间模型,通过去除地表响应,反演了硬岩介质中的地下爆炸震源函数折合速度势RVP(reduced velocity potential),得到了描述地下爆炸震源的折合速度势RVP振幅谱及其参数稳态值、特征频率、过冲特征量,通过回归分析,得到稳态值和特征频率与爆炸当量的关系。Abstract: The characteristics of explosive seismic source has been investigated with close-in ground motion data. On the assumption of half space model, the underground explosion seismic source function, i.e. reduced velocity potential (RVP), has been obtained deducting the ground surface response. The spectrum magnitude of RVP and its parameters including steady state value , frequency factor and overshoot B were obtained. The relationship between yield and source parameters of and were obtained as well.
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