Data for injection-induced fault slip on smooth and rough laboratory faults

The datasets archived here act as supplementary materials to the study entitled ‘Surface roughness controls injection-induced slip on laboratory faults ’ by Wang et al. This study has been submitted to Science Advances for potential publication.

The authors have loaded cylindrical quartz-rich sandstone samples (50*100 mm) containing an inclined fault interface with varying surface roughness (saw-cut smooth surface vs. fractured rough surface) in a triaxial compression apparatus to a critical stress state and subsequently activated fault slip using defined fluid injection protocols. The authors have produced a series of injection-induced slip events on three samples, one containing a smooth fault and two samples cut by rough faults (Rough Fault #1 and Rough Fault #2, respectively) at a fixed confining pressure of 35 MPa. The datasets below summarize the experimental results of three experiments with the names of 'Smooth Fault', 'Rough Fault #1' and 'Rough Fault #2', respectively.

In each fluid injection experiment, the measured values of shear stress, fault slip, etc. are recorded as a function of time with a sampling rate of 10 Hz. The header of each column in the data tables gives the recorded parameter and its corresponding unit, as shown in the first row.

本处归档的数据集为Wang等题为《表面粗糙度调控实验室断层的注入诱导滑移》的研究的补充材料。该研究已提交至《科学进展（Science Advances）》以寻求正式发表。
研究者将含倾斜断层界面的富石英圆柱砂岩试样（尺寸为50×100 mm）置入三轴压缩装置，使其达到临界应力状态；该试样的断层表面粗糙度存在差异，分为锯切光滑表面与破裂粗糙表面两类。随后通过预设的流体注入方案激活断层滑移。
研究者在围压固定为35 MPa的条件下，对3组试样开展了一系列注入诱导滑移实验：其中1组试样带有光滑断层，另外2组试样带有粗糙断层（分别记为粗糙断层#1与粗糙断层#2）。下述数据集分别对应这三组实验，实验名称依次为“光滑断层”、“粗糙断层#1”与“粗糙断层#2”，其内容汇总了相应的实验结果。
在每一次流体注入实验中，研究者以10 Hz的采样频率记录剪切应力、断层滑移量等实测值随时间的变化。数据表格的每一列表头均标注了所记录的参数及其对应单位，如第一行所示。