Kgarume, Thabang ESpottiswoode, SMDurrheim, RJ2010-12-102010-12-102010-02Kgarume, TE, Spottiswoode, SM and Durrheim, RJ. 2010. Statistical properties of mine tremor aftershocks. Pure and Applied Geophysics, Vol. 167(1/2), pp 107-1170033-4553http://hdl.handle.net/10204/4648Copyright: 2010 Springer. This is the post print version of the work. The definitive version is published in Pure and Applied Geophysics, Vol. 167(1/2), pp 107-117Mine tremors and their aftershocks pose a risk to mine workers in the deep gold mines of South Africa. The statistical properties of mine-tremor aftershocks were investigated as part of an endeavour to assess the hazard and manage the risk. Data from two gold mines in the Carletonville mining district were used in the analysis. Main shocks were aligned in space and time and the aftershock sequences stacked and analysed. The aftershocks were found to satisfy Gutenberg–Richter scaling, with a b value close to 1. Aftershock activity diminished with time in accordance with the modified Omori law, with p values close to 1. However, the relationship between the main shock and its biggest aftershock violated Ba°ths law, with DML & 1.9 for main shocks with ML\3 and increasing for main shocks with ML[3. The aftershock density was found to fall-off with distance as r-1.3, suggesting triggering by dynamic stressenMine seismic eventsAftershock event rateAftershock density decayOmori’s lawGeophysicsArticleKgarume, T. E., Spottiswoode, S., & Durrheim, R. (2010). Statistical properties of mine tremor aftershocks. http://hdl.handle.net/10204/4648Kgarume, Thabang E, SM Spottiswoode, and RJ Durrheim "Statistical properties of mine tremor aftershocks." (2010) http://hdl.handle.net/10204/4648Kgarume TE, Spottiswoode S, Durrheim R. Statistical properties of mine tremor aftershocks. 2010; http://hdl.handle.net/10204/4648.TY - Article AU - Kgarume, Thabang E AU - Spottiswoode, SM AU - Durrheim, RJ AB - Mine tremors and their aftershocks pose a risk to mine workers in the deep gold mines of South Africa. The statistical properties of mine-tremor aftershocks were investigated as part of an endeavour to assess the hazard and manage the risk. Data from two gold mines in the Carletonville mining district were used in the analysis. Main shocks were aligned in space and time and the aftershock sequences stacked and analysed. The aftershocks were found to satisfy Gutenberg–Richter scaling, with a b value close to 1. Aftershock activity diminished with time in accordance with the modified Omori law, with p values close to 1. However, the relationship between the main shock and its biggest aftershock violated Ba°ths law, with DML & 1.9 for main shocks with ML\3 and increasing for main shocks with ML[3. The aftershock density was found to fall-off with distance as r-1.3, suggesting triggering by dynamic stress DA - 2010-02 DB - ResearchSpace DP - CSIR KW - Mine seismic events KW - Aftershock event rate KW - Aftershock density decay KW - Omori’s law KW - Geophysics LK - https://researchspace.csir.co.za PY - 2010 SM - 0033-4553 T1 - Statistical properties of mine tremor aftershocks TI - Statistical properties of mine tremor aftershocks UR - http://hdl.handle.net/10204/4648 ER -