The multiple inverse method: a new technique to separate stresses from heterogeneous fault-slip data
The multiple inverse method: a new technique to separate stresses from heterogeneous fault-slip data
复制标题
DOI：
10.1016/s0191-8141(99)00163-7
复制
发表时间：
2000-04-01
影响因子：
3.1
通讯作者：
Yamaji, A
中科院分区：
文献类型：
--
作者：
Yamaji, A
本文提出了一种新的反演方法，它可以在不知道应力或根据应力对断层进行分类的情况下，从非均匀断层滑动数据中分离出应力。通过反演确定了四个参数：一个用于应力椭球的形状，三个用于应力轴的方向。因此，反演相当于将断层滑动数据投影到四维参数空间中的一个点。数据被划分为k元素子集的逆技术被应用，其中k = 4或5是最佳的选择的解决方案的稳定性和减少计算。重要的解决方案被确定为参数空间中的集群。该技术首先证明了模拟断层滑动数据。以日本西部中新世前陆沉积物为例，应用该方法对野外资料进行了处理。(C)2000爱思唯尔科技有限公司版权所有。
A new inverse technique is presented here to separate stresses from heterogeneous fault-slip data without a priori information on the stresses or on the classification of faults according to the stresses. Four parameters are determined by the inversion: one for the shape of the stress ellipsoid and three for the direction of the stress axes. Accordingly, the inversion is equivalent to the projection of the fault-slip data to a point in four-dimensional parameter space. The data are divided into k-element subsets to which the inverse technique is applied, where k = 4 or 5 is the optimal choice for the stability of solutions and for the reduction of computation. Significant solutions are identified as clusters in parameter space. The technique is demonstrated first by simulated fault-slip data. As an example, field data obtained from Miocene fore-are sediments in western Japan were processed by the method. (C) 2000 Elsevier Science Ltd. All rights reserved.