eprintid: 1423 rev_number: 23 eprint_status: archive userid: 2 dir: disk0/00/00/14/23 datestamp: 2015-02-26 15:15:39 lastmod: 2017-04-27 07:12:24 status_changed: 2015-04-27 12:10:52 type: article metadata_visibility: show creators_name: Arabasz, W. J. creators_name: Nava, S. J. creators_name: McCarter, M. K. creators_name: Pankow, K. L. creators_name: Pechmann, J. C. creators_name: Ake, John creators_name: McGarr, Arthur F. creators_id: pechmann@seis.utah.edu corp_creators: University of Utah Seismograph Stations Department of Geology and Geophysics University of Utah Salt Lake City, Utah 84112 corp_creators: ENSCO, Inc., Melbourne, Florida 32940 corp_creators: University of Utah Seismograph Stations Department of Geology and Geophysics University of Utah Salt Lake City, Utah 84112 corp_creators: University of Utah Seismograph Stations Department of Geology and Geophysics University of Utah Salt Lake City, Utah 84112 corp_creators: University of Utah Seismograph Stations Department of Geology and Geophysics University of Utah Salt Lake City, Utah 84112 corp_creators: Seismotectonics and Geophysics Group U.S. Bureau of Reclamation Denver, Colorado 80225 corp_creators: U.S. Geological Survey Menlo Park, California 94025 title: Coal-Mining Seismicity and Ground-Shaking Hazard: A Case Study in the Trail Mountain Area, Emery County, Utah ispublished: pub subjects: MP1 subjects: MP2 subjects: RU9_1 subjects: SMU divisions: EPOS-P full_text_status: none abstract: We describe a multipart study to quantify the potential ground-shaking hazard to Joes Valley Dam, a 58-m-high earthfill dam, posed by mining-induced seismicity (MIS) from future underground coal mining, which could approach as close as ~1 km to the dam. To characterize future MIS close to the dam, we studied MIS located ~3-7 km from the dam at the Trail Mountain coal mine. A 12-station local seismic network (11 stations above ground, one below, combining eight triaxial accelerometers and varied velocity sensors) was operated in the Trail Mountain area from late 2000 through mid-2001 for the dual purpose of (1) continuously monitoring and locating MIS associated with longwall mining at a depth of 0.5-0.6 km and (2) recording high-quality data to develop ground-motion prediction equations for the shallow MIS. (Ground-motion attenuation relationships and moment-tensor results are reported in companion articles.) Utilizing a data set of 1913 earthquakes (M ≤ 2.2), we describe space-time-magnitude distributions of the observed MIS and source-mechanism information. The MIS was highly correlated with mining activity both in space and time. Most of the better-located events have depths constrained within +-0.6 km of mine level. For the preponderance (98%) of the 1913 located events, only dilatational P-wave first motions were observed, consistent with other evidence for implosive or collapse-type mechanisms associated with coal mining in this region. We assess a probable maximum magnitude of M 3.9 (84th percentile of a cumulative distribution) for potential MIS close to Joes Valley Dam based on both the worldwide and regional record of coal-mining-related MIS and the local geology and future mining scenarios. date: 2005-02 date_type: published publication: Bulletin of the Seismological Society of America volume: 95 number: 1 publisher: Seismological Society of America pagerange: 18-30 id_number: doi:10.1785/0120040045 refereed: TRUE issn: 0037-1106 official_url: http://dx.doi.org/10.1785/0120040045 access_IS-EPOS: limited owner: Publisher citation: Arabasz, W. J. and Nava, S. J. and McCarter, M. K. and Pankow, K. L. and Pechmann, J. C. and Ake, John and McGarr, Arthur F. (2005) Coal-Mining Seismicity and Ground-Shaking Hazard: A Case Study in the Trail Mountain Area, Emery County, Utah. Bulletin of the Seismological Society of America, 95 (1). pp. 18-30. DOI: https://doi.org/10.1785/0120040045