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TitleCanadian Hazards Information Service automated public earthquake information via social network messaging
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AuthorEdwards, W N; Hayek, K; Majewski, C
SourceGeological Survey of Canada, Open File 7054, 2012, 35 pages, https://doi.org/10.4095/291337
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 risk; earthquake catalogues; earthquake foci; information geology
Illustrationslocation maps; plots; graphs; histograms; flow charts
Viewing
Location
 
Natural Resources Canada Library - Ottawa (Earth Sciences)
 
ProgramCanadian Hazard Information Service, Canadian Hazard Information Service
Released2012 04 19
AbstractIn the wake of the Val-des-Bois 5.0 Mw earthquake on June 23, 2010, the Canadian Hazards Information Service (CHIS) and EarthquakesCanada identified a need to rapidly disseminate earthquake information to the general population after a seismic event. In response, an automated process was developed, tested and implemented by which the continuous stream of seismic event solutions generated by the automated location algorithm AUTOLOC are screened. Automated seismic event solutions are reviewed to determine their robustness and filtered using a series of physically and statistically-based criteria and thresholds. Robust seismic events greater than magnitude 4.0 located within Canada trigger automatic alerts to on-duty seismologists and generate automatic notifications in both official languages to be sent directly to the public via the social networking service Twitter from @CANADAquakes and @CANADAseisme. Rates and accuracies of these automated notifications were tested with a series of simulations using six years of automated AUTOLOC solutions and the seismologist reviewed Canadian National Seismic Network (CNSN) earthquake catalogue. Early results of the implemented real-time system show a good correspondence between predicted and actual notification posting rates and the event magnitude accuracy.
GEOSCAN ID291337