GEOSCAN, résultats de la recherche


TitreDetection of decadal and interdecadal oscillations and temporal trend analysis of climate and hydrological time series, Canadian Prairies
AuteurChen, Z; Grasby, S E
SourceCommission géologique du Canada, Dossier public 5782, 2009, 13 pages,
Documentdossier public
Mediaen ligne; numérique
ProvinceAlberta; Saskatchewan; Manitoba
SNRC62; 63; 72; 73; 74A; 74B; 74C; 74D; 74E; 74F; 82H; 82I; 82J; 82O; 82P; 83; 84
Lat/Long OENS-120.0000 -95.0000 59.0000 49.0000
Sujetsrivières; bassins versants; taux de décharge; précipitation; temperature; budget hydrologique; milieu hydrologique; hydrogéologie
Illustrationslocation maps; plots; graphs; histograms; tables
Bibliothèque de Ressources naturelles Canada - Ottawa (Sciences de la Terre)
ProgrammeImpacts des changements climatiques et adaptation dans le secteur des ressources naturelles et d'autres secteurs clés de l'économie, Géosciences de changements climatiques
Diffusé2009 11 06
Résumé(disponible en anglais seulement)
To better understand the natural modes of discharge from the Athabasca River and perform an appropriate trend prediction for the sustainability study of the oilsand development in Alberta, long term instrumental records of annual river discharge, temperature, and precipitation time series from Canadian Prairie provinces were collected and analyzed for decadal and inter-decadal oscillation. Three types of methods, auto-correlation, composite method and spectral analysis, were applied to extract the long-term natural variation. Synthetic time series, consisting of known periodic components of different cycle length and magnitude, mixed with linear trend and red noise, were simulated and examined to help gain a better understanding of the behaviours of the quasi-periodic variation in the acquired real time series.