| Title | A comprehensive earthquake catalogue for southwestern Alberta, between 2004 and 2015 |
| Download | Downloads |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Huang, G D; Kao, H ; Gu, Y J |
| Source | Geological Survey of Canada, Open File 8705, 2020, 49 pages, https://doi.org/10.4095/321826  Open Access |
| Image |  |
| Year | 2020 |
| Publisher | Natural Resources Canada |
| Document | open file |
| Lang. | English |
| Media | on-line; digital |
| File format | readme
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| File format | pdf; rtf; xlsx (Microsoft® Excel®) |
| Province | Alberta |
| NTS | 82M; 82N; 82O; 82P; 83 |
| Area | Edmonton |
| Lat/Long WENS | -119.0000 -113.0000 55.5000 51.7500 |
| Subjects | geophysics; environmental geology; fossil fuels; Economics and Industry; Science and Technology; Nature and Environment; seismology; seismological network; seismic arrays; seismicity; seismic risk;
earthquakes; earthquake risk; earthquake catalogues; seismic data; seismic interpretations; seismic waves; seismic velocities; epicentres; amplitude spectra; earthquake magnitudes; petroleum resources; petroleum engineering; oil; gas; hydraulic
fracturing; shales; mining; quarries; waste disposal sites; tectonic setting; deformation; models; Western Canada Sedimentary Basin; Canadian National Seismograph Network; Alberta Telemetered Seismograph Network; Regional Alberta Observatory for
Earthquake (RAVEN); Canadian Rockies and Alberta Network (CRANE); TransAlta Induced Earthquake Monitoring Network; Canadian Northwest Experiment; Canadian Cordillera; Interior Platform; 23 January 2015 M4.6 Crooked Lake Event; Mining
industry |
| Illustrations | location maps; diagrams; spectra; models; bar graphs; tables |
| Program | Environmental Geoscience Shale Gas - induced seismicity |
| Released | 2020 03 02 |
| Abstract | We revisited seismic data recorded from 2004/05 to 2015/01 by regional seismic networks in western Alberta, with the intention of establishing the most comprehensive earthquake catalogue that the data
allow. We use a signal-to-noise ratio (SNR) based algorithm to detect earthquake signals, locate the events with a grid-search method, and determine the moment magnitude from time-domain inversion of the observed amplitudes. Our final catalogue
contains a total of 306 earthquakes, of which 60 events are missing from routine earthquake monitoring by both Natural Resources Canada (NRCan) and Alberta Geological Survey (AGS). The 306 earthquakes can be roughly grouped into 5 tightly
concentrated clusters; several tens of which are, however, broadly distributed in the region. While some of the clusters identified by this study have been studied previously, a potential induced seismicity cluster located at close range to station
PER is newly discovered through our analysis. |
| Summary | (Plain Language Summary, not published)
We revisited seismic data recorded during the time period of 2004/05-2015/01 by regional seismic networks in western Alberta, with the intention to
establish the most comprehensive earthquake catalogue that is as complete as the data allow. Our final catalogue contains a total of 306 earthquakes, of which 60 events are missing from routine earthquake monitoring by both Natural Resources Canada
(NRCan) and Alberta Geological Survey (AGS). The 306 earthquakes can be roughly grouped into 5 tightly concentrated clusters, however several tens of which are broadly distributed in the region. While some of the clusters identified by this study
have already been studied previously, a potential induced seismicity cluster located at a close range to station PER is newly discovered through our analysis. |
| GEOSCAN ID | 321826 |
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