Utah Earthquake Epicenters Mining Induced 1928 to 2016

The tectonic earthquake data are primarily from a Uniform Moment Magnitude Earthquake Catalog developed for Utah and its surrounding region by Arabasz and others (2016) for the time period 1850 through September 2012. For the map, we extended the catalog through December 2016 and expanded it to include earthquakes smaller than magnitude 2.9. MIS was excluded from the compilation of Arabasz and others (2016) but has been added to the map to show its significance in east-central Utah. Data for the seismic events plotted on the map are listed in two separate catalogs in the form of an ArcGIS feature class within a file geodatabase. The catalog files are available in the Utah Geospatial Resource Center (UGRC) State Geographic Information Database (SGID, https://gis.utah.gov/data/geoscience/) and at https://ugspub.nr.utah.gov/publications/open_file_reports/ofr-667/ofr-667.zip. The primary catalog used for the map, termed the Earthquake Catalog (EQ Catalog, Utah_EQcat_1850_2016), comprises tectonic earthquakes located within the “Utah Region” (lat. 36.75° to 42.50° N, long. 108.75° to 114.25° W) from 1850 through 2016. This region is the standard region used by the University of Utah Seismograph Stations (UUSS) for the compilation and reporting of earthquakes within and surrounding Utah. Note that the map covers most, but not all, of the Utah Region. The map delineates two areas in east-central Utah that are characterized by predominantly (more than 90%) MIS. All seismic events (including both MIS and tectonic earthquakes) located in these two areas are listed in a separate catalog, termed the Coal-Mining-Region Catalog (CMR Catalog)(Utah_CMRcat_1928_2016), which extends from 1928 (the year of the first located event) through 2016. The EQ and CMR catalogs are mutually exclusive. The EQ Catalog does not include tectonic earthquakes located within the two delineated areas of predominantly MIS. More information about the earthquake epicenter data is contained in UGS OFR 667 (https://ugspub.nr.utah.gov/publications/open_file_reports/ofr-667/ofr-667.pdf).构造地震数据主要源自Arabasz等人2016年针对犹他州及周边区域编制的《统一矩震级地震目录》，时间范围为1850年至2012年9月。为制作本地图，我们将该目录的时间跨度延展至2016年12月，并扩充了震级小于2.9的地震事件收录范围。Arabasz等人2016年的原始编目未纳入MIS（采矿诱发地震，Mine-Induced Seismicity），但本次地图补充了该类事件，以展示其在犹他州中东部地区的重要性。本地图绘制的地震事件数据以两个独立目录的形式存储，存储格式为文件地理数据库中的ArcGIS要素类（ArcGIS feature class）。该目录文件可通过犹他州地理资源中心（Utah Geospatial Resource Center, UGRC）的州地理信息数据库（State Geographic Information Database, SGID, https://gis.utah.gov/data/geoscience/）以及https://ugspub.nr.utah.gov/publications/open_file_reports/ofr-667/ofr-667.zip 获取。本地图使用的核心目录名为地震目录（Earthquake Catalog, EQ Catalog, Utah_EQcat_1850_2016），涵盖1850年至2016年间位于“犹他州区域”（纬度36.75°N至42.50°N，经度108.75°W至114.25°W）内的构造地震。该区域是犹他大学地震台站（University of Utah Seismograph Stations, UUSS）编制和报告犹他州及周边地区地震时采用的标准区域。需注意，本地图覆盖了犹他州区域的大部分区域，但并非全部。地图标注了犹他州中东部的两个区域，这两个区域的地震事件以MIS为主，占比超过90%。位于这两个区域内的所有地震事件（包括MIS和构造地震）被收录于另一个独立目录，名为煤矿区目录（Coal-Mining-Region Catalog, CMR Catalog, Utah_CMRcat_1928_2016），时间跨度为1928年（首个被定位的地震事件年份）至2016年。EQ目录与CMR目录相互独立，不存在重叠收录的情况。EQ目录未纳入上述两个以MIS为主的标注区域内的构造地震。更多关于地震震中数据的信息可参阅UGS OFR 667（https://ugspub.nr.utah.gov/publications/open_file_reports/ofr-667/ofr-667.pdf）。