| Title | A revised moment magnitude catalog of eastern Canada's largest earthquakes |
| Download | Downloads |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Bent, A L |
| Source | Geological Survey of Canada, Open File 8862, 2022, 34 pages, https://doi.org/10.4095/329612  Open Access |
| Image |  |
| Year | 2022 |
| Publisher | Natural Resources Canada |
| Document | open file |
| Lang. | English |
| Media | digital; on-line |
| File format | readme
|
| File format | pdf; rtf; xlsx (Microsoft® Excel®) |
| Province | Newfoundland and Labrador; Prince Edward Island; Nova Scotia; New Brunswick; Quebec; Ontario; Nunavut; Saskatchewan; Manitoba; Northwest Territories; Eastern offshore region; Northern offshore
region |
| NTS | 1; 2; 3; 10; 11; 12; 13; 14; 15; 16; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 52; 53; 54; 55; 56; 57; 58; 59; 62; 63; 64; 65;
66; 67; 68; 69; 72; 73; 74; 75; 76; 77; 78; 79; 120; 340; 560 |
| Area | Canada; United States of America; Greenland; Denmark |
| Lat/Long WENS | -110.0000 -45.0000 85.0000 37.5000 |
| Subjects | geophysics; Science and Technology; Nature and Environment; Health and Safety; seismology; earthquakes; earthquake catalogues; earthquake magnitudes; earthquake foci; seismicity; seismic risk;
earthquake risk; National Earthquake Database (NEDB); Natural hazards |
| Illustrations | tables; location maps; histograms |
| Program | Canadian Hazard Information Service
Canadian Hazard Information Service Management |
| Released | 2022 02 15 |
| Abstract | Although there are many scales used to calculate earthquake magnitude, moment magnitude is currently considered the preferred magnitude scale for use in seismic hazard assessment in Canada.
Historically, moment magnitude was not determined for eastern Canadian earthquakes although it has been routinely calculated for earthquakes of approximately magnitude 4.0 and greater, on regional magnitude scales, for the last decade. Thus, most
moment magnitudes for eastern Canadian earthquakes must be obtained by converting from another magnitude scale or from felt information. This paper provides a moment magnitude catalog for the largest earthquakes in eastern Canada and vicinity. The
study derives moment magnitudes for some events but also makes use of values from the published literature. Earthquakes are assessed individually using all available sources of information. The resulting catalog provides moment magnitudes for 254
events. Three additional events were evaluated but removed from the catalog as it is highly questionable whether they were earthquakes. |
| Summary | (Plain Language Summary, not published)
Although there are many different magnitude scales used to measure the size of earthquakes, moment magnitude is currently the preferred magnitude scale
for use in seismic hazard assessments as it is the most reliable at high magnitudes. Because it is a newer magnitude scale and not easy to calculate for small earthquakes, many other magnitudes appear in the national earthquake catalog. This paper
makes use of all available evidence and determines moment magnitude for over 250 of the largest earthquakes in eastern Canada and provides them in a format that may be used by others for hazard assessments and other research. |
| GEOSCAN ID | 329612 |
|
|