GEOSCAN, résultats de la recherche

Menu GEOSCAN


TitreThe canadian crustal stress database: update to 2008
AuteurCassidy, J; Rogers, G; Ristau, J; Adams, J; Bent, A
Source3rd world stress map conference, frontiers of stress research: observation, integration and application; 2008 p. 92
Année2008
Séries alt.Secteur des sciences de la Terre, Contribution externe 20080221
Réunion3rd World Stress Map Conference; Potsdam; DE; Octobre 15-17, 2008
Documentlivre
Lang.anglais
Mediapapier; en ligne; numérique
Formatspdf
ProvinceColombie-Britannique; Alberta; Saskatchewan; Manitoba; Ontario; Québec; Nouveau-Brunswick; Nouvelle-Écosse; Île-du-Prince-Édouard; Terre-Neuve-et-Labrador; Territoires du Nord-Ouest; Yukon; Nunavut
SNRC1; 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 OENS-141.0000 -50.0000 90.0000 41.7500
Sujetsmouvements de la croûte; croûte continentale; études de la croûte; evolution de la croûte; secousses séismiques; mécanismes de tremblement de terre; études séismiques; tectonique
ProgrammeRéduction des risques dus aux aléas naturels
Résumé(disponible en anglais seulement)
The Canadian Crustal Stress Database, originally compiled in 1985 and subsequently updated in 1987 and 1994, has been updated as of January 1, 2008. Here we describe the updated database. The 1994 database consisted of 1828 entries that spanned the depth range from near-surface to more than 30 km. These entries include stress measurements based on earthquake focal mechanisms (0-50 km depth), oil well breakouts (1-5 km), hydraulic fracturing (0-5 km), overcoring for engineering works (0-200 m), overcoring in mines (>200 m), and other surface geological phenomena (buckles, folds, pop-ups, etc), and some geodetic (strain) measurements as aliases for stress. In 2008, a significant update - more than 740 new entries based on earthquake data - was made. Approximately 90% of these new stress measurements are from western Canada with the remainder from eastern and northern Canadian earthquakes. They represent stress estimates from 548 regional moment tensor focal mechanisms, 16 Harvard moment tensor solutions, 172 P-nodal solutions, and 10 estimates from crustal shear-wave splitting. This updated database contributes to our understanding of the earthquake-generating crustal stress field in Canada and the cause(s) of stresses applied to the North American plate.
GEOSCAN ID225478