Earthquake Sequence Dynamics at the Interface Between an Elastic Layer and Underlying Half-Space in Antiplane Shear

We quantify sliding stability and rupture styles for a horizontal interface between an elastic layer and stiffer elastic half-space with a free surface on top and rate-and-state friction on the interface. Specific motivation (and model parameters) comes from quasi-periodic slow slip events on the Whillans Ice Plain in West Antarctica. We quantify the influence of layer thickness on sliding stability, specifically whether steady loading of the system produces steady sliding or sequences of stick-slip events. This dataset contains input files from different parts of parameter space to demonstrate different styles of slip (steady sliding, slow slip sequences, and fast slip sequences).

我们对弹性层与刚性更大的弹性半空间之间的水平界面的滑动稳定性及破裂模式进行量化分析；该界面顶部为自由表面，界面处采用速率-状态摩擦（rate-and-state friction）模型。研究的具体动机（及模型参数）源于西南极洲惠兰斯冰原（Whillans Ice Plain）上的准周期性慢滑事件。我们量化了层厚对滑动稳定性的影响，具体关注系统的稳态加载是否会产生稳态滑动或粘滑事件序列。本数据集包含参数空间不同区域的输入文件，旨在展示多种滑动模式（稳态滑动、慢滑序列及快速滑动序列）。