Borehole Strainmeter data from California from 1981 to the present

The data from the borehole strainmeter network set consists of raw data from the telemetry, state of health measurements, environmental measurement of temperature and pressure, and processed borehole strainmeter data. For each strainmeter site in this network, there will be a mix of raw data, SOH, environmental data, and processed strain. Each channel of data consists of a time of observation, usually 10-minute intervals, and a number that is either telemetry counts (which is proportional to the voltage output by the instrument), or in units of strain, which are either in part per million or parts per billion. Processed strain will be free of glitches and other artifacts and are corrected for changes in atmospheric pressure (which is also recorded onsite). The processed strain data are a mix of single component, volumetric measurements and multi-component measurements of horizontal strain converted to dilatation and shear.

本钻孔应变仪（borehole strainmeter）网络数据集包含遥测（telemetry）原始数据、健康状态（State of Health，简称SOH）测量数据、温度与压力环境监测数据，以及经处理后的钻孔应变仪数据。本网络内的每一处应变仪监测站点，均同步包含原始数据、SOH数据、环境数据与处理后应变数据。每条数据通道均包含观测时刻与对应数值，采样间隔通常为10分钟；数值可表现为遥测计数（与仪器输出电压呈正比），或以应变单位标注，应变单位可采用百万分率（part per million，ppm）或十亿分率（part per billion，ppb）。处理后的应变数据已剔除毛刺（glitches）与其他伪影（artifacts），并针对现场同步记录的大气压力变化完成了校正。该处理后的应变数据涵盖单分量体积测量结果，以及将水平多分量应变转换为膨胀量（dilatation）与剪切量（shear）后的多分量测量结果。