Incorporation of incomplete fault-slip data into stress tensor inversion
Incorporation of incomplete fault-slip data into stress tensor inversion
复制标题
将不完整的断层滑动数据纳入应力张量反演
DOI：
10.1016/j.tecto.2006.05.004
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发表时间：
2006
期刊：
影响因子：
2.9
通讯作者：
Katsushi Sato
中科院分区：
文献类型：
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作者：
Katsushi Sato
在应力张量反演技术中，断层滑动基准面由断层方向、滑动方向和滑动方向组成。有时后两项不可用。本文提出了一种处理这种不完整断层滑动数据的方法。首先，从理论上明确了完整数据和不完整数据对应力状态的约束条件。容许应力用参数空间中的概率分布表示。反演的目标函数是通过叠加所有数据（包括完整数据和不完整数据）的概率分布来给出的。最后，目标函数的峰值被检测到枚举可能的解决方案。仿真数据验证了该方法的有效性。不完整数据的加入可以提高应力状态的可检测性，扩大应力张量反演的适用范围。
A fault-slip datum used in the stress tensor inversion techniques is composed of fault orientation, slip orientation and the sense of slip. Sometimes the latter two items are not available. This paper proposes a method to deal with such incomplete fault-slip data. Firstly, the constraints on stress state from full and incomplete data are theoretically specified. The admissible stresses are expressed by the probability distributions in the parameter space. The objective function of inversion is given by superposing the probability distributions for all data including full and incomplete ones. Finally, the peaks of the objective function are detected to enumerate possible solutions. The validity of the present method is tested by simulated data. The incorporation of incomplete data can enhance the detectability of stress states and expands the applicability of stress tensor inversion.