Abstract
First-motion analyses of digital seismic records and an assessment of damage provided conclusive evidence that a fault-slip source mechanism was responsible for a Richter magnitude 2 that occurred at the Lucky Friday Mine on April 13, 1990. This event was the first time that movement along an argillite bed had been observed after the macroseismic monitoring system had been installed. The physical evidence of a shear-slip type failure established confidence in using double-couple, first-motion analyses for the macroseismic system. The U.S. Bureau of Mines is conducting this research as part of its mission to enhance safety by reducing rockburst hazards in mines.
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Williams, T.J., Wideman, C.J. & Scott, D.F. Case history of a slip-type rockburst. PAGEOPH 139, 627–637 (1992). https://doi.org/10.1007/BF00879955
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DOI: https://doi.org/10.1007/BF00879955