GEOSCAN, résultats de la recherche

Menu GEOSCAN


TitrePerformance comparison between current automated earthquake location methods, Autoloc and Antelope
TéléchargerTéléchargements
AuteurEdwards, W N
SourceCommission géologique du Canada, Dossier public 7000, 2012, 25 pages, https://doi.org/10.4095/291487
Année2012
ÉditeurRessources naturelles Canada
Documentdossier public
Lang.anglais
DOIhttps://doi.org/10.4095/291487
Mediaen ligne; numérique
Formatspdf
ProvinceColombie-Britannique; Alberta; Saskatchewan; Manitoba; Ontario; Québec; Nouveau-Brunswick; Nouvelle-Écosse; Île-du-Prince-Édouard; Terre-Neuve-et-Labrador; Territoires du Nord-Ouest; Yukon; Nunavut
SNRC1; 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 OENS-141.0000 -50.0000 90.0000 41.7500
Sujetssecousses séismiques; catalogues des tremblements de terre; foyers des séismes; magnitudes des séismes; géologie informative; séismologie; réseau sismique; géophysique
Illustrationslocation maps; plots; graphs; histograms; schematic diagrams; tables
Consultation
Endroit
 
Bibliothèque de Ressources naturelles Canada - Ottawa (Sciences de la Terre)
 
ProgrammeService d'information sur les dangers naturels au Canada, Service d'information sur les dangers naturels au Canada
Diffusé2012 06 07
Résumé(disponible en anglais seulement)
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 ID291487