地震发生的物理过程或震源物理过程称为震源机制。它可以通过多个地震台的地震记录图来确定。浅源地震P波(纵波)初动与震源体初动方向之间的关系较明确而简单。即P波的初动具明显的象限分布特点。
The analytical results of the aftershock focal mechanism show that the seismogenic fault dip angle is slowing down with depth,and is gradually steepening from southwest to northeast,which could be used to explain the increases of strike-slip component.
余震震源机制分析结果表明,发震断层的倾角随深度的增加而变缓,且从西南向北东逐渐变陡可以用来解释走滑分量增加的成因。
参考来源 - 汶川MBased on grouped data, detailed statistical analyses have beendone for strong ground motion characteristics from different aspects. In addition, thethesis also researches the effects of site classification and fault mechanism uponground motion characteristics.
除此之外,本文还研究了场地类别、传播途径和震源机制等因素对地震动若干特性的影响,着重分析对比了同样震级、距离和场地条件下记录到的地面运动的差异和不确定性影响,初步分析了可能产生这种不确定性的原因。
参考来源 - 地震动特性的影响因素与不确定性分析·2,447,543篇论文数据，部分数据来源于NoteExpress
求解了福建水口水库地区15个地震的震源机制解。
The focal mechanism solution of 15 earthquakes in Fujian Shuikou reservoir area is calculated.
震源机制主要是左旋走滑，带有很小的逆冲倾滑分量。
The focal mechanism is mainly left-lateral strike-slip, with a small thrust component.
发现老虎台煤矿矿震与该区域天然地震的震源机制差异明显。
The authors find that there is appreciable difference in focal mechanism between mining-induced earthquakes in the Laohutai coal mine and natural earthquakes of the region.
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