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TitleA comprehensive earthquake catalogue for the Fort St. John-Dawson Creek region, British Columbia, 2017-2018
AuthorVisser, R; Kao, H; Smith, B; Goerzen, C; Kontou, B; Dokht, R M H; Hutchinson, J; Tan, F; Babaie Mahani, A
SourceGeological Survey of Canada, Open File 8718, 2020, 28 pages, (Open Access)
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
RelatedThis publication is related to Visser, R; Smith, B; Kao, H; Babaie Mahani, A; Hutchinson, J; McKay, J E; (2017). A comprehensive earthquake catalogue for northeastern British Columbia and western Alberta, 2014-2016, Geological Survey of Canada, Open File 8335
File formatreadme
File formatpdf; rtf; xlsx (Microsoft® Excel®)
ProvinceBritish Columbia; Alberta
NTS83L/12; 83L/13; 84D/04; 84D/05; 93P/09; 93P/10; 93P/11; 93P/14; 93P/15; 93P/16; 94A/01; 94A/02; 94A/03; 94A/06; 94A/07; 94A/08
AreaDawson Creek; Fort St. John
Lat/Long WENS-121.2000 -119.8000 56.3000 55.5000
Subjectsgeophysics; environmental geology; fossil fuels; Economics and Industry; Science and Technology; Nature and Environment; seismology; earthquakes; earthquake catalogues; seismicity; earthquake risk; seismic risk; seismological network; seismographs; seismic data; seismic waves; seismic models; earthquake magnitudes; petroleum industry; hydrocarbon recovery; hydraulic fracturing; bedrock geology; structural features; grabens; Western Canada Sedimentary Basin; Canadian National Seismograph Network; Seismicity-Scanning based on Navigated Automatic Phase-picking (S-SNAP); Dawson Creek Graben Complex; Fort St. John Graben; Montney Trend; Antelope; induced seismicity; fluid injection; injection-induced earthquakes; geological hazards; unconventional energy resources; data processing; algorithms; methodology
Illustrationslocation maps; flow diagrams; geoscientific sketch maps; seismograms; plots; histograms; time series; tables
ProgramEnvironmental Geoscience, Shale Gas - induced seismicity
ProgramecoENERGY Innovation Initiative
ProgramProgram of Energy Research and Development (PERD)
ProgramEnergy Innovation Program
Released2020 04 28
AbstractTo gain a better understanding of induced seismicity in northeastern British Columbia, we conducted an analysis of seismic data to locate earthquakes that occurred within the area of 55.5°N-56.3°N and 119.8°W-121.2°W for the years of 2017 and 2018. This catalogue contains earthquakes that were detected and located using a combination of manual analysis and a semi-automated process utilizing the newly developed Seismicity-Scanning based on Navigated Automatic Phase-picking (S-SNAP) algorithm (Tan et al., 2019). There were two major seismic station deployments within the study area during the study period which significantly increased our ability to locate small earthquakes (ML <1.5). Our dataset consisted of continuous seismic waveforms from a total of 52 stations operated by various organizations in the region. A total of 10,692 events were identified, located, and had solutions which passed our quality control criteria. For the same period and area, the Canadian National Seismograph Network (CNSN) routine catalogue 71 events - all are included in this study. In this report, we describe in detail both the manual location procedures and our implementation of S-SNAP. The earthquake catalogue, picking information, and magnitude information are included in separate files and can easily be joined using the earthquake origin IDs. The total number of events in 2017 and 2018 are 5779 and 4914, respectively. The overall magnitude of completeness of our catalogue is ML ~1.5 for the period of 2017-01 through 2017-06, when there were only 2 stations within the study area, and ~ML 1.0 when there were 10 or more stations in the area from 2017-07 onwards.
Summary(Plain Language Summary, not published)
This open file report presents the catalogue of earthquakes that occurred in the Fort St. John - Dawson Creek region, British Columbia from 1 January 2017 to 31 December 2018. Using data from 52 seismograph stations in western Canada, we have identified and located a total of 10,704 seismic events. For the same period and area, the Canadian National Seismograph Network routine catalogue has only 71 events - all are included in this study. Detailed lists of each event's source parameters, phase picks used in the earthquake location process, and estimated magnitude are given in separated spreadsheet files.