Did seismic activity occur near the Crandall Canyon mine before the August 6 shock?
The earthquake catalog generated by the University of Utah’s regional seismic network provides a continuous record of mining-related seismicity, above a certain size, in the Wasatch Plateau–Book Cliffs coalfields. Figure A is a plot of magnitude versus time for 152 seismic events in the catalog located within 3.0 km (1.9 miles) of the inferred location of the damaged part of the Crandall Canyon mine and occurring during a two-year period preceding the August 6 shock. Such a plot cannot be properly evaluated without independent information regarding details of mining operations within the mine. The number of seismic events is not in itself unusual for an active mine in the Wasatch Plateau–Book Cliffs area. Figure B is an expanded plot for seismic events in Figure A occurring after May 1, 2007. Events that occurred after the main event on August 6 and through August 14 have been added.
Related Questions
- Why do seismologists say that the main seismic event on August 6, 2007, near the Crandall Canyon mine was not a naturally occurring earthquake?
- Is an electric bed dangerous in the case of seismic activity, voltage spikes, short circuits, etc.?
- Did seismic activity occur near the Crandall Canyon mine before the August 6 shock?
