GRAVITY AND POTENTIAL CHANGES DUE TO SHEAR AND TENSILE FAULTS IN A HALF-SPACE
GRAVITY AND POTENTIAL CHANGES DUE TO SHEAR AND TENSILE FAULTS IN A HALF-SPACE
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DOI：
10.1029/92jb00178
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发表时间：
1992-05-10
影响因子：
3.9
通讯作者：
OKUBO, S
中科院分区：
文献类型：
--
作者：
OKUBO, S
从简化模型推导出的解析表达式是无价的，因为它们常常提供对地球物理现象的深刻洞察。势和重力的变化就是这种情况。在这里，我们给出了埋藏在均匀半空间中的有限矩形平面上断层引起的位势和重力变化的表达式。该表达式可用于评估地表重力和大地水准面高度的同震变化。因此，观测到的重力数据与我们的公式相结合，提供了对断层几何形状和位错大小的约束。
Analytic expressions derived from a simplified model are invaluable because they often provide deep insight into geophysical phenomena. Such is the case with potential and gravity changes. Here we present expressions of potential and gravity changes caused by faulting on a finite rectangular plane buried in a homogeneous half-space. The expressions can be used to evaluate coseismic changes in surface gravity and geoid height. Observed gravimetric data combined with our formulae thus provide constraints on the fault geometry and magnitudes of dislocation.