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TitleStrong motion monitoring in Canada and recent datasets from Natural Resources Canada
AuthorCassidy, J FORCID logo; Brillon, C; Adams, JORCID logo; Rogers, G C
Source12th Canadian Conference on Earthquake Engineering, proceedings; 2019 p. 1-8
LinksAbstract - Résumé
Alt SeriesNatural Resources Canada, Contribution Series 20180305
PublisherCanadian Association of Earthquake Engineers
MeetingCCEE 2019 - 12th Canadian Conference on Earthquake Engineering / 12ième Conférence canadienne du génie parasismique; Québec, QC; CA; June 17-20, 2019
File formatpdf (Adobe® Reader®)
ProvinceCanada; British Columbia; Alberta; Saskatchewan; Manitoba; Ontario; Quebec; New Brunswick; Nova Scotia; Prince Edward Island; Newfoundland and Labrador; Northwest Territories; Yukon; Nunavut; Canada
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; Science and Technology; seismology; seismological network; earthquakes; strong motion seismology; in-field instrumentation; seismic methods; Canadian National Seismograph Network; monitoring
Illustrationslocation maps; tables
ProgramPublic Safety Geoscience Assessing Earthquake Geohazards
Released2019 06 01
AbstractStrong motion monitoring continues to evolve rapidly in Canada, with many organisations contributing data. This article summarises the current state of strong motion monitoring across Canada and recent (since 2015) strong motion datasets. As of January 2019, the Canadian National Seismograph Network (CNSN) upgrade is nearing completion, resulting in one of the most significant changes in strong motion monitoring in Canada since the first deployment of accelerometers in 1963. As a part of this upgrade, ~100 new strong motion instruments (Nanometrics Titans) were deployed at bedrock sites (co-located with weak motion broadband instruments) in high seismic hazard regions of Canada. In addition, ~40 stand-alone strong motion instruments are being deployed. Natural Resources Canada (NRCan) operated nearly 100 strong motion Internet Accelerometers (IA's) across Canada, primarily located on soil sites, and in the urban centres of high seismic risk in southwest British Columbia and southwestern Quebec/eastern Ontario. BC Hydro operates more than 90 strong motion instruments at dam sites and substations across BC. Other strong motion instruments in western Canada are owned by utilities or transportation organisations (BC Ministry of Transportation and Infrastructure has deployed nearly 100 instruments to monitor bridges and critical infrastructure). Ocean Networks Canada now has 7 strong motion instruments on the seafloor west of Vancouver Island and 14 strong motion instruments onshore Vancouver Island, and UBC and BCSIMS have deployed dozens of instruments in southwest BC. In eastern Canada, several organisations operate strong motion instruments, including: Hydro-Quebec at dams and substations; Ontario Power Generation and New Brunswick at their nuclear power stations; PWGSC at Parliament Hill; and Gaz Metropolitain at its Montreal LNG plant. Since 2014, more than 726 accelerograms have been recorded, most in the Vancouver Island region (e.g., 126 recordings of a Mw 4.7 near Victoria). While there were no nearby recordings of large earthquakes in the past 4 years (the strongest ground motions are accelerations of ~ 5% g) these datasets are useful for comparison with proposed attenuation relations, for evaluating local earthquake site response, and are valuable to engineers evaluating strong ground shaking during future earthquakes.
Summary(Plain Language Summary, not published)
This presentation outlines the changes in strong ground motion monitoring across Canada during the past 4 years (since the last Canadian Association of Earthquake Engineering Conference), and the variety of applications for these data.In addition, significant Canadian datasets collected during this time period are described. It is noteworthy that strong motion seismic data are amongst the most important data for engineers following a large earthquake.

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