Extensometers

Vibrating-wire extensometer (RST Instruments, model EXSR-1300) data from two sensors that spanned the active earthflow margin, one (MX1049) approximately two meters away from the shear zone piezometer (SNAP) and the other (MX1048) is on the same shear margin, but 125 downhill. MX1048 is in line with the UNAVCO ORE2 GPS station, which is in the center of the earthflow. MX1049 is in line with the UNAVCO OREO GPS station, which is in the center of the earthflow. The extensometers were buried to a depth of 20 cm and the long axis was oriented as close to parallel to the strike of the slickensided shear zone as possible, with the flanges located diagonally across from one another. The folder below contains matlab processing scripts for the raw extensometer data.本数据集包含两台布设于活动土流边缘的振弦式伸长计（Vibrating-wire extensometer，RST Instruments 型号EXSR-1300）的观测数据。其中一台（MX1049）距剪切区渗压计（SNAP）约2米，另一台（MX1048）位于同一剪切边缘，沿下坡方向偏移125。MX1048与坐落于土流中心的UNAVCO ORE2 GPS站共线，MX1049则与同样位于土流中心的UNAVCO OREO GPS站共线。该伸长计埋深20厘米，长轴尽可能与擦痕剪切带的走向保持平行，且两个法兰盘呈对角布置。下述文件夹包含针对原始伸长计数据的Matlab处理脚本。