GEOSCAN Search Results: Fastlink

GEOSCAN Menu


TitlePerformance comparison between current automated earthquake location methods, Autoloc and Antelope
DownloadDownloads
AuthorEdwards, W N
SourceGeological Survey of Canada, Open File 7000, 2012, 25 pages, https://doi.org/10.4095/291487
Year2012
PublisherNatural Resources Canada
Documentopen file
Lang.English
Mediaon-line; digital
File formatpdf
ProvinceBritish Columbia; Alberta; Saskatchewan; Manitoba; Ontario; Quebec; New Brunswick; Nova Scotia; Prince Edward Island; Newfoundland and Labrador; Northwest Territories; Yukon; Nunavut
NTS1; 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
Subjectsgeophysics; earthquakes; earthquake catalogues; earthquake foci; earthquake magnitudes; information geology; seismology; seismological network; Autoloc; Antelope; geological hazards
Illustrationslocation maps; plots; graphs; histograms; schematic diagrams; tables
Viewing
Location
 
Natural Resources Canada Library - Ottawa (Earth Sciences)
 
ProgramCanadian Hazard Information Service, Canadian Hazard Information Service
Released2012 06 07
AbstractThe 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 ID291487