Internal deformation due to shear and tensile faults in a half-space
Internal deformation due to shear and tensile faults in a half-space
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DOI：
10.1785/bssa0820021018
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发表时间：
1992-04
影响因子：
3
通讯作者：
Y. Okada
中科院分区：
文献类型：
--
作者：
Y. Okada
对于点源和有限长矩形源，统一地给出了半空间内剪切断层和拉伸断层引起的内部位移和应变的一套封闭的解析表达式。这些表达式特别紧凑，并且系统地由表示无限大介质中的变形的项组成，该项与表面变形有关，并乘以观测点的深度。文中还提出了一些避免数学奇异性和计算不稳定性的实用建议。这里推导出的表达式是观测和理论分析与地震和火山现象相关的静电场变化的有力工具。
A complete set of closed analytical expressions is presented in a unified manner for the internal displacements and strains due to shear and tensile faults in a half-space for both point and finite rectangular sources. These expressions are particularly compact and systematically composed of terms representing deformations in an infinite medium, a term related to surface deformation and that is multiplied by the depth of observation point. Several practical suggestions to avoid mathematical singularities and computational instabilities are also presented. The expressions derived here represent powerful tools both for the observational and theoretical analyses of static field changes associated with earthquake and volcanic phenomena.