Elk Creek Seismic Waveforms 2012 (Part 15 of 20)

Coal bursts (damaging seismic events in underground coal mines) pose a substantial threat to operations and mine workers. The underground coal mines in Colorado’s North Fork Valley (NFV) have experienced many coal bursts, often with distinct characteristics from those of other US coal mining regions. To better understand these events and manage their associated risks, the National Institute for Occupational Safety and Health undertook a long-term monitoring campaign at the Elk Creek Mine in the NFV. The monitoring efforts included a seismic network composed of both surface and underground sensors, borehole pressure cells (BPCs), instrumented support Cans, convergence monitors, ground condition surveys, and several other data sources. This dataset consists of the event waveform files from the seismic network for the 983,379 events that were detected during the monitoring campaign. The waveforms are stored in HDF5 files that are broken up by week. Within the HDF5 files, the data are organized by station id, event time, and channel. The amplitudes are velocity in meters/second. This is download 42 of 48 and corresponds to the time range between October 22, 2012, and October 29, 2012.矿震冲击（地下煤矿中具有破坏性的地震事件）对煤矿生产作业与井下矿工的生命安全构成严重威胁。美国科罗拉多州北福克谷（North Fork Valley, NFV）的地下煤矿曾发生多起矿震冲击事件，其特征往往与美国其他煤矿产区的同类事件存在显著差异。为深入了解此类事件并管控相关风险，美国国家职业安全与健康研究所（National Institute for Occupational Safety and Health）在北福克谷的埃尔克里克煤矿（Elk Creek Mine）开展了长期监测工作。此次监测工作涵盖一套由地面与井下传感器组成的地震台网、钻孔压力传感器（borehole pressure cells, BPCs）、带监测装置的支护罐、位移收敛监测仪、地质状况勘测以及其他多种数据采集来源。本数据集包含此次监测期间探测到的983379起事件的地震台网波形文件。波形数据按周拆分存储于HDF5格式文件中。在HDF5文件内，数据按台站ID、事件时间与通道进行组织，振幅单位为米/秒的速度量值。 本文件为第42个下载包（共48个），对应时间范围为2012年10月22日至2012年10月29日。