Self-organizing fault systems and self-organizing elastodynamic events on them: Geometry and the distribution of sizes of events
Self-organizing fault systems and self-organizing elastodynamic events on them: Geometry and the distribution of sizes of events
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DOI：
10.1029/2004gl019726
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发表时间：
2004-09-08
影响因子：
5.2
通讯作者：
Shaw, BE
中科院分区：
文献类型：
--
作者：
Shaw, BE
我们引入了一个新的模型，既产生一个自组织的复杂的分段故障系统，然后容纳有限的应变，并产生序列的弹性动力学事件的复杂故障系统。这开辟了一个新的领域研究人口的级联弹性动力学破裂的复杂故障系统。我们研究模型中事件大小的分布，以及它对断层几何形状的依赖。我们看到了从更像古腾堡-里希特分布的事件在较小的应变更像分布在较大的应变特征的演变。我们看到事件大小的分布对所使用的摩擦力相对不敏感。检查不同长度的故障段上的事件的大小的分布，我们发现一个修改后的分割假设，即段都打破幂律小事件，偶尔参与级联多段较大的破裂，但也主要是作为一个单位打破支持。
We introduce a new model which both generates a self-organizing complex segmented fault system which then accommodates finite strain, and generates sequences of elastodynamic events on that complex fault system. This opens up a new realm of study of populations of cascading elastodynamic ruptures on complex fault systems. We examine the distribution of sizes of events in the model, and its dependence on fault geometry. We see an evolution from a more Gutenberg-Richter like distribution of events at smaller strains to a more characteristic like distribution at larger strains. We see relative insensitivity of the distribution of sizes of events to the friction used. Examining the distributions of sizes of events on fault segments of different lengths, we find support for a modified segmentation hypothesis whereby segments both break in power law small events and occasionally participate in cascading multisegment larger ruptures, but also predominantly break as a unit.