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TitleNumerical modelling and triggering mechanism of the largest hydraulic fracturing-induced earthquake in northeastern British Columbia, Canada (NTS 094B/16)
AuthorWang, B; Verdecchia, A; Kao, HORCID logo; Harrington, R M; Liu, Y; Yu, HORCID logo
SourceGeoscience BC summary of activities 2020: energy and water; Geoscience BC, Report 2021-02, 2021 p. 31-43 Open Access logo Open Access
LinksOnline - En ligne
Alt SeriesNatural Resources Canada, Contribution Series 20200571
PublisherGeoscience BC
Mediapaper; on-line; digital
File formatpdf
ProvinceBritish Columbia
NTS94B/16; 94G/01
Lat/Long WENS-122.3500 -122.0000 57.0500 56.8500
Subjectsgeophysics; engineering geology; Nature and Environment; Science and Technology; Economics and Industry; seismology; earthquake mechanisms; earthquakes; earthquake risk; seismicity; seismic risk; petroleum industry; hydraulic fracturing; modelling; computer simulations; bedrock geology; structural features; faults; pressure; stress analyses
Illustrationslocation maps; sketch maps; focal mechanisms; tables; plots; 3-D models; time series; bar graphs; seismograms
ProgramEnvironmental Geoscience Shale Gas - induced seismicity
Released2021 01 01
Summary(Plain Language Summary, not published)
This is an invited article by Geoscience BC to provide a summary of the funded research work in 2020. In this study, we conduct numerical modeling of the largest hydraulic fracturing-induced earthquake in Canada (the 17 August 2015 Mw 4.6 earthquake) to investigate its triggering mechanism. We conclude that the elastic stress perturbation from injection alone is not enough to cause this event. Instead, pore pressure increase associated with fluid migration to the pre-existing fault, which took 5 days to complete, is most likely physical mechanism that triggered this event.

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