GEOSCAN, résultats de la recherche


TitreRegional VS30 model for the St.ÊLawrence Lowlands, Eastern Canada
AuteurNastev, M; Parent, M; Benoit, N; Ross, M; Howlett, D
SourceGeorisk vol. 10, 3, 2016 p. 200-212,
ÉditeurTaylor and Francis Ltd.
Documentpublication en série
Mediapapier; en ligne; numérique
ProgrammeÉvaluation rapide des risques, Géoscience pour la sécurité publique
ProgrammeEvaluation quantitiative du risque, Géoscience pour la sécurité publique
Résumé(disponible en anglais seulement)
Shear-wave velocity of the top 30?m, VS30, is commonly used for prediction of the seismic site response. This paper presents development, validation and uncertainty assessment of a regional VS30 model based on a combination of simplified 3D geology and statistically representative velocity values. Results identify soft marine sediments in deep sedimentary basins as zones most susceptible to seismic shaking. Compared to the available urban-scale seismic zonation studies, the regional model showed a success rate of roughly 64% in predicting local site category. The standard deviation was in average 30% of the expected VS30 value. © 2016, Copyright of the Crown in Canada 2016 Natural Resources Canada.