Physics
Scientific paper
Oct 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3620301y&link_type=abstract
Geophysical Research Letters, Volume 36, Issue 20, CiteID L20301
Physics
Tectonophysics: Dynamics And Mechanics Of Faulting (8004), Structural Geology: Role Of Fluids, Tectonophysics: Stresses: General
Scientific paper
We report new laboratory simulations of fluid-induced seismicity on pre-existing faults in sandstone. By introducing pore pressure oscillations, faults were activated or reactivated to generate seismic sequences. These sequences were analysed using a slip-forecast model. Furthermore, field data from the Monticello reservoir was used to verify the model. Our results suggest that short-term forecasting is reliant upon the final stages when crack communication begins, limiting reservoir-induced seismicity (RIS) forecasting strategies to short periods. In addition, our laboratory data confirms the general accuracy and robustness of short-term forecast techniques dealing with natural crack-linkage processes, whether strain driven or fluid driven, ranging from volcanic hazard mitigation to episodic tremors and slips. Finally, oscillating pore pressure can prolong the period of fluid-induced seismicity, and the aftershock decay rate is slower than that without oscillations.
Benson Philip M.
Ying Wai-lai
Young Paul R.
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