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TitleRecent improvements to strong motion monitoring in Canada
 
AuthorCassidy, J FORCID logo; Bent, A L
Source2021 Annual Meeting, Seismological Society of America, technical sessions; Seismological Research Letters vol. 92, no. 2B, 2021 p. 1433, https://doi.org/10.1785/0220210025 Open Access logo Open Access
Image
Year2021
Alt SeriesNatural Resources Canada, Contribution Series 20200700
PublisherSeismological Society of America
MeetingSeismological Society of America 2021 Annual Meeting; April 19-23, 2021
Documentserial
Lang.English
Mediapaper; on-line; digital
File formatpdf
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
Subjectsgeophysics; Science and Technology; Nature and Environment; Health and Safety; seismology; strong motion seismology; seismological network; in-field instrumentation; seismic data; Canadian National Seismograph Network; National Waveform Archive
ProgramPublic Safety Geoscience Assessing Earthquake Geohazards
Released2021 04 01
AbstractAs of January, 2021, one of the most significant changes in strong motion monitoring in Canada since the first deployment of accelerometers in 1963, has been completed. This upgrade provides ~100 new strong motion instruments co-located with weak-motion instruments (6-component) at Canadian National Seismograph Network (CNSN) bedrock sites with an additional ~40 sites (mostly bedrock) having stand-alone strong motion instruments. The vast majority of these CNSN instruments are located in the high seismic hazard regions of Canada, especially Vancouver Island and southwest British Columbia, Haida Gwaii, and the St. Lawrence Valley region. Also, for the first time, strong motion instruments are located in northern Canada.
The Titan instruments are currently streaming data at 100 s/s and have a maximum 4 g recording level. The continuous records from the Titan sensors are available by request to the NRCan's National Waveform Archive. To ensure high availability and resiliency, all seismic data are sent simultaneously to two data centers: one in Sidney, British Columbia and one in Ottawa, Ontario. The acquisition systems forward the data to an archive server, where the data are saved and available to the routine processing systems.
Strong motion waveform data and station metadata are freely available via a variety of methods.
In addition to these strong motion instruments there are an additional 350+ strong motion instruments across Canada (mostly in British Columbia) owned and operated by other organisations (e.g., B C Ministry of Transportation and Highways, BC Hydro, and more). These instruments are primarily located on soil sites.
With this recent CNSN upgrade, and the continued expansion of strong motion monitoring by other organisations across Canada, engineers will have access to more (and very valuable) strong motion data for Canadian earthquakes. This will lead to improved earthquake hazard models, improved seismic design for infrastructure, and safer communities.
Summary(Plain Language Summary, not published)
This document summarises recent updates to the Canadian National Strong Motion Network. It also summarises other Canadian strong motion monitoring systems. These new data are of critical importance to engineers and emergency responders before, during and after an earthquake. These data will provide critical information required to update future seismic hazard models in Canada.
GEOSCAN ID328007

 
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