Supporting Information for Analogue sandbox modeling of orogenic wedge front faulting: roles of inherited fault zones and topographic loading

This is the supporting information of a sandbox modeling study focusing on fault processes in orogenic wedge frontal areas, like the Longmen Shan front where the 2008 Wenchuan earthqauke and 2013 Lushan earthquake occurred. It contains four parts, including:

Fig. S1: The critically tapered angle of our modeling materials, determined by the reference experiment. (Page 2-3)
Fig. S2: Summary of the 27 sandbox experiments involving inherited fault zones. Both top and lateral view of selected photos are provided. (Page 4-18)
Fig. S3: Mohr diagrams helping to constrain the frictional strength of the investigated IFs. They come together and form Fig. 14a. (Page 19)
Fig. S4: Fault reactivation diagram adopted in Fig. 14b, according to Sibson (1985) and Sibson and Xie, (1998). (Page 20-21)

Generated by sandbox modeling and mechanics analysis, these data are helpful to understand why and how fault segmentation shows up during both long-term and short-term seismic deformation of orogenic wedge front.

本数据集为针对造山楔前沿区域（如龙门山前，2008年汶川地震和2013年庐山地震发生地）的断层过程沙盘模拟研究之辅助信息。该数据集包含四个部分，具体如下：

图S1：通过参考实验确定的建模材料的临界锥形角度。（第2-3页）

图S2：包含继承断层区的27个沙盘实验的总结。提供所选照片的顶部和侧面视图。（第4-18页）

图S3：有助于约束所研究断层（IFs）摩擦强度的摩尔图。它们共同构成了图14a。（第19页）

图S4：根据Sibson（1985）和Sibson与谢（1998）的研究，采纳于图14b的断层复活图。（第20-21页）

通过沙盘模拟和力学分析生成的这些数据，有助于理解为何以及如何在造山楔前沿的长期和短期地震变形过程中，断层分割现象显现。