| Title | Performance comparison between current automated earthquake location methods, Autoloc and Antelope |
| Download | Downloads |
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| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Edwards, W N |
| Source | Geological Survey of Canada, Open File 7000, 2012, 25 pages, https://doi.org/10.4095/291487  Open Access |
| Image |  |
| Year | 2012 |
| Publisher | Natural Resources Canada |
| Document | open file |
| Lang. | English |
| Media | on-line; digital |
| File format | pdf |
| Province | British Columbia; Alberta; Saskatchewan; Manitoba; Ontario; Quebec; New Brunswick; Nova Scotia; Prince Edward Island; Newfoundland and Labrador; Northwest Territories; Yukon; Nunavut; Canada |
| 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; 82; 83; 84; 85; 86; 87; 88; 89; 92; 93; 94; 95; 96; 97; 98; 99; 102; 103; 104; 105; 106; 107; 114O; 114P; 115; 116; 117; 120; 340; 560 |
| Lat/Long WENS | -141.0000 -50.0000 90.0000 41.7500 |
| Subjects | geophysics; earthquakes; earthquake catalogues; earthquake foci; earthquake magnitudes; information geology; seismology; seismological network; Autoloc; Antelope; Environmental hazards |
| Illustrations | location maps; plots; graphs; histograms; schematic diagrams; tables |
| Program | Canadian Hazard Information Service |
| Released | 2012 06 07 |
| Abstract | The two methods of automatic earthquake location currently in use (as of May 2010) by the Canadian Hazards Information Service, Autoloc and Antelope, are compared to solutions produced daily by
seismologists in an effort to evaluate the performance of both algorithms. The one year evaluation period extends from May 7, 2009 to May 6, 2010. Results show that both algorithms have their strengths and weaknesses that are specific to their
current usage. In general Autoloc outperforms Antelope in terms of earthquake event detection across magnitudes of 2.0 and greater, while Antelope appears to possess a superior ability to identify seismic phase arrival times and thus is more accurate
in its automated locations of earthquakes. Currently magnitude assessment is difficult for Antelope due to limitations in its design, however, for Autoloc current overall automated magnitudes for earthquakes >2.0 are underestimated by -0.3
magnitudes, improving to 0.04 as magnitude increases to 4.5. Potential exists in combining the strengths of both algorithms either as a single entity or by using both in tandem for improved hazard awareness. |
| GEOSCAN ID | 291487 |
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