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Spatio-temporal analysis of stress diffusion in a mining-induced seismicity system

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Marsan, D, Bean, CJ, Steacy, S and McCloskey, J (1999) Spatio-temporal analysis of stress diffusion in a mining-induced seismicity system. GEOPHYSICAL RESEARCH LETTERS, 26 (24). pp. 3697-3700. [Journal article]

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Abstract

The spatio-temporal correlation of micro-earthquakes occuring in a mining-induced seismic system (Creighton mine, Ontario, Canada) is investigated. It is shown that, when considering only the after-events correlated to a main event, i.e., not accounting for the uncorrelated regime of `background' activity, the spatial distribution of these after-events occuring at t after the main event change with t. This change takes the form of an expanding pattern, characterized by a typical scale L-c(t) varying as L-c(t) similar to t(H), H being estimated to 0.18. This diffusion exponent is found to increase when considering only a subset of the most energetic events as mainshocks. We interpret this result as the indication of a stress (sub-)diffusion mechanism, involving propagation on the heterogeneous fractal fault network.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Research Institutes and Groups:Environmental Sciences Research Institute
Environmental Sciences Research Institute > Geophysics
ID Code:144
Deposited By:Professor Sandy Steacy
Deposited On:05 Nov 2009 13:48
Last Modified:22 Jun 2011 15:08

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