EARTHQUAKES WITH NON-DOUBLE-COUPLE MECHANISMS
EARTHQUAKES WITH NON-DOUBLE-COUPLE MECHANISMS
复制标题
DOI：
10.1126/science.264.5160.804
复制
发表时间：
1994-05-06
期刊：
影响因子：
56.9
通讯作者：
FROHLICH, C
中科院分区：
文献类型：
--
作者：
FROHLICH, C
地震学观测证实，某些地震的地震波模式不能由沿沿着平面断层面的滑动产生。需要不止一种物理机制来解释观测到的这些非双力偶地震的变化。最简单的解释是，有些地震是复杂的，应力释放在两个或多个方向合适的、不平行的断层面上。然而，在火山和地热区发生的一些浅源地震需要其他解释。目前的研究集中在断层复杂性是否解释了大多数观测到的非双力偶地震，以及普通地震在多大程度上具有非双力偶分量。
Seismological observations confirm that the pattern of seismic waves from some earthquakes cannot be produced by slip along a planar fault surface. More than one physical mechanism is required to explain the observed varieties of these non-double-couple earthquakes. The simplest explanation is that some earthquakes are complex, with stress released on two or more suitably oriented, nonparallel fault surfaces. However, some shallow earthquakes in volcanic and geothermal areas require other explanations. Current research focuses on whether fault complexity explains most observed nondouble-couple earthquakes and to what extent ordinary earthquakes have non-double-couple components.