Physics
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3610307b&link_type=abstract
Geophysical Research Letters, Volume 36, Issue 10, CiteID L10307
Physics
6
Seismology: Earthquake Source Observations (1240), Seismology: Seismicity And Tectonics (1207, 1217, 1240, 1242), Structural Geology: Fractures And Faults, Seismology: Seismic Instruments And Networks (0935, 3025)
Scientific paper
With twelve years of seismic data from TauTona Gold Mine, South Africa, we show that mining-induced earthquakes follow the Gutenberg-Richter relation with no scale break down to the completeness level of the catalog, at moment magnitude M W -1.3. Events recorded during relatively quiet hours in 2006 indicate that catalog detection limitations, not earthquake source physics, controlled the previously reported minimum magnitude in this mine. Within the Natural Earthquake Laboratory in South African Mines (NELSAM) experiment's dense seismic array, earthquakes that exhibit shear failure at magnitudes as small as M W -3.9 are observed, but we find no evidence that M W -3.9 represents the minimum magnitude. In contrast to previous work, our results imply small nucleation zones and that earthquake processes in the mine can readily be scaled to those in either laboratory experiments or natural faults.
Boettcher Margaret S.
Johnston Malcolm
McGarr Arthur
No associations
LandOfFree
Extension of Gutenberg-Richter distribution to MW -1.3, no lower limit in sight does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Extension of Gutenberg-Richter distribution to MW -1.3, no lower limit in sight, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extension of Gutenberg-Richter distribution to MW -1.3, no lower limit in sight will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-811153