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TitleSoil amplification in Ottawa from urban strong ground motion records
DownloadDownloads
AuthorAdams, J
SourceProceedings of the 9th Canadian Conference on Earthquake Engineering; 2007 p. 379-389, https://doi.org/10.4095/223220
Year2007
Alt SeriesGeological Survey of Canada, Contribution Series 20060523
Alt SeriesEarth Sciences Sector, General Information Product 45
PublisherCanadian Association of Earthquake Engineering (Ottawa, ON, Canada)
Meeting9th Canadian Conference on Earthquake Engineering; Ottawa, ON; CA; June 26-29, 2007
Documentbook
Lang.English
MediaCD-ROM; on-line; digital
File formatpdf (Adobe® Reader®)
ProvinceOntario
NTS31G/05
AreaOttawa
Lat/Long WENS-76.0000 -75.5000 45.5000 45.2500
Subjectsgeophysics; seismic interpretations; seismicity; seismic risk; seismic velocities; seismology; strong motion seismology; earthquake risk; earthquakes
Illustrationslocation maps; photographs; graphs; plots; seismograms
ProgramCanadian Hazard Information Service
AbstractA strong motion network, established in Ottawa in the winter of 2002, was expanded with additional ETNA and IA (Internet Accelerometer) instruments in 2004-2005. It has now recorded weak motions from three earthquakes: M5.0 (Au Sable Forks, 20020429) at 180 km, M4.7 (Charlevoix, 20050306) at 525 km and M4.0 (Thurso, 20060225) at 32-56 km distance. The records have been analysed using site-to-reference spectral ratio and H/V spectral ratio methods and show significant amplification and sharp resonance peaks at the thick soil sites. Although strong ground motion records are of the greatest value, these weak motion records help to calibrate engineering models in the linear range of soil behaviour.
GEOSCAN ID223220