【摘要】 以典型的圆锥形陷落柱构建模型,采用声波方程对其地震波场响应进行模拟,分别从炮点位于陷落柱顶以及位于陷落柱顶一侧较近的两种情况对陷落柱地震波场特征进行细致分析.我们认识到了陷落柱柱壁绕射是陷落柱地震响应的重要特征.陷落柱的"反射——透射波"以及"透射——反射波"可成为识别陷落柱的重要标志.更多还原

【Abstract】 Based on the common conical subsided column, we construct the subsided model and simulate its seismic response by using acoustic wave equation. We consider two conditions:one is the shot above the top of subsided column, the other is the shot beside the top of subsided column. We recognize the diffraction from the wall of the subsided column is the most important feature of the seismic response of the subside column. The " reflectiontransmission" and "transmission-reflection" can be the signature for identifying subsided columns.更多还原