A Wideband data from the manuscript: Magnetoresistive Sensor for Monitoring Dynamic Fault Slip in Laboratory Fault Friction Experiments

These data are the basis of the figures in the manuscript "A Wideband magnetoresistive sensor for monitoring dynamic fault slip in laboratory fault friction experiments". That report was the result of an investigation of a non-contact, wideband method of sensing dynamic fault slip in laboratory geophysical experiments which employs an inexpensive magnetoresistive sensor, a small neodymium rare earth magnet, and user built application specific wideband signal conditioning electronics. The magnetoresistive sensor generates a voltage proportional to the changing angles of magnetic flux lines, generated by differential motion or rotation of the near-by magnet, through the sensor. The performance of an array of these sensors compares favorably to other conventional position sensing methods employed at multiple locations along a 2m long x 0.4m deep laboratory strike-slip fault. For these magnetoresistive sensors, the lack of resonance signals commonly encountered with cantilever-type position sensor mounting, the wide band response (DC to ≈ 100 kHz) that exceeds the capabilities of many traditional position sensors, and the small foot print on the sample, make them attractive options for capturing high speed fault slip measurements in these laboratory experiments. An unanticipated observation of this study is the apparent sensitivity of this sensor to high frequency electomagnetic signals associated with fault rupture and/or rupture propagation, which may offer new insights into the physics of earthquake faulting.本数据集为论文《用于实验室断层摩擦实验中动态断层滑移监测的宽带磁阻传感器（magnetoresistive sensor）》中的全部图表提供了数据支撑。该研究报告聚焦实验室地球物理实验中的非接触式宽带动态断层滑移传感技术，所采用的实验装置包括低成本磁阻传感器、小型钕稀土磁铁（neodymium rare earth magnet），以及用户自制的专用宽带信号调理电子装置。磁阻传感器可输出与磁通量线变化角度成正比的电压信号，此类磁通量线由传感器附近的磁体通过差动运动或旋转产生，并穿过传感器本体。将该传感器阵列的性能与沿2米长×0.4米深的实验室走滑断层（strike-slip fault）多个部署点位所使用的其他常规位置传感方法相比，其表现更具优势。相较于悬臂式（cantilever-type）位置传感器安装方式常出现的谐振信号问题，此类磁阻传感器不存在该缺陷；同时其宽带响应特性（直流至约100 kHz）远超多数传统位置传感器，且在样品上的占用面积极小，因此在这类实验室实验中，它们是获取高速断层滑移测量数据的理想选择。本研究还有一项未预期的观测结果：该传感器对与断层破裂及/或破裂传播相关的高频电磁（electromagnetic）信号具有显著灵敏度，这或许能为地震断层物理机制研究提供全新视角。