| Title | A comprehensive earthquake catalogue for the Fort St. John-Dawson Creek region, British Columbia, 2017-2018 |
| Download | Downloads |
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| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Visser, R; Kao, H ; Smith, B; Goerzen, C; Kontou, B; Dokht, R M H;
Hutchinson, J; Tan, F; Babaie Mahani, A |
| Source | Geological Survey of Canada, Open File 8718, 2020, 28 pages, https://doi.org/10.4095/326015  Open Access |
| Image |  |
| Year | 2020 |
| Publisher | Natural Resources Canada |
| Document | open file |
| Lang. | English |
| Media | on-line; digital |
| Related | This publication is related to the following
publications |
| File format | readme
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| File format | pdf; rtf; xlsx (Microsoft® Excel®) |
| Province | British Columbia; Alberta |
| NTS | 83L/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 |
| Area | Dawson Creek; Fort St. John |
| Lat/Long WENS | -121.2000 -119.8000 56.3000 55.5000 |
| Subjects | geophysics; 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; Data processing; Methodology |
| Illustrations | location maps; flow diagrams; geoscientific sketch maps; seismograms; plots; histograms; time series; tables |
| Program | Environmental Geoscience Shale Gas - induced seismicity |
| Program | ecoENERGY Innovation Initiative |
| Program | Program of Energy Research and Development (PERD) |
| Program | Energy Innovation Program |
| Released | 2020 04 28 |
| Abstract | To 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. |
| GEOSCAN ID | 326015 |
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