... south africa government artificial intelligence machine learning reservoir characterization energy ratio source parameter mechanism sensor structural geology metals & mining merensky reef es ep gibowicz & kijko mendecki seismicity source mechanism arrival time geological...

... upstream oil & gas stability microseismic event rock bolt failure microseismic data powerhouse cavern monitoring source parameter july 2014 march 2015 information cavern underground powerhouse cavern strata november 2014 instability graph reservoir characterization real...

... a large-scale excavation response test. For both sets of data, corner Frequency ( f o ) and moment magnitude ( M w ) were found to be inside the ranges 190 kHz < f o < 750 kHz and -7.2 < M w < -6.5, respectively and all source parameters appeared to obey scaling relationships derived...

... of the event source parameters during the formation of this macrofracture structure, indicate following a gradual increase during loading, a fall in the moment magnitude, seismic moment, radiated energy and apparent stress, associated to facture interaction, which lead to a more substantial drop, at the point...

... program is mainly geared towards short term hazard recognition and rapid relay of information to operations. Mid to long term planning/risk assessment is also conducted using both time/location of events and source parameter information. This paper gives a general overview of the Mine?s seismic monitoring...

... are subsequently applied to source parameter catalogs recorded at three hard rock underground mines: Kidd, Creighton (both in Ontario, Canada), and Ridgeway (New South Wales, Australia). These catalogs contain several thousands to tens of thousands of seismic events recorded between 2001-2005 with magnitudes...