| Titre | Reconnaissance sub-bottom profiling studies of Peyto Lake, Banff National Park |
| Télécharger | Téléchargements |
| Licence | Veuillez noter que la Licence du gouvernement
ouvert - Canada remplace toutes les licences antérieures. |
| Auteur | Medioli, B E; Demuth, M N |
| Source | Commission géologique du Canada, Dossier public 5727, 2009, 1 feuille, https://doi.org/10.4095/247448 (Accès ouvert) |
| Image |  |
| Année | 2009 |
| Éditeur | Ressources naturelles Canada |
| Document | dossier public |
| Lang. | anglais |
| DOI | https://doi.org/10.4095/247448 |
| Media | papier; en ligne; numérique |
| Référence reliée | Cette publication est reliée Medioli, B E;
Demuth, M N; (2009). Sub-bottom profiling results from Peyto Lake, Banff National Park, Alberta, Commission géologique du Canada, Dossier public 5728 |
| Formats | pdf; JPEG2000 |
| Province | Alberta |
| SNRC | 82N/10 |
| Région | Banff National Park; Peyto Lake |
| Lat/Long OENS | -117.0000 -116.5000 51.7500 51.5000 |
| Sujets | dépôts glaciaires; glaciers; sédiments de fond; dépôts de lacs glaciaires; lacs glaciaires; épaisseur des sediments lacustres; sediments lacustres; dépôts glaciolacustres; Holocène; budget hydrologique;
hydrographie; fluctuations climatiques; climat; faciès; faciès sédimentaires; Glacier de Peyto ; géologie des dépôts meubles/géomorphologie; hydrogéologie; Nature et environnement; Quaternaire; Cénozoïque |
| Illustrations | cartes de localisation; photographies; coupes transversales; profils |
| Programme | Géosciences de changements climatiques, Les sciences de la Terre à l'appui de la caractérisation, à l'échelle nationale, des impacts des changements climatiques sur la masse continentale
canadienne |
| Diffusé | 2009 06 08 |
| Résumé | (disponible en anglais seulement)
Recent studies have pointed to significant negative flow trends in the glacierized catchments of Canada's Southern Cordillera. These trends and a reduction in
the flow regulation effect of glacier cover are due to marked reductions in the aerial extent of glaciers over the last half of the 20th Century (Hopkinson and Young 1998; Moore and Demuth 2001; Demuth and Pietroniro 2002; and Stahl and Moore 2006).
These conclusions are the result of analyses conducted using the available instrumental records describing summer month river flows.
In the context of water resources, and to better define the warmdry climate episode adaptation limits provided by
the presence of glaciers, it is desirable to place these observations within the perspective of glacier fluctuations that have taken place over the last several millennia. In several instances recent and paleoglacier fluctuations from direct or proxy
evidence have been well documented. For example, Demuth (1997), Demuth and Keller (2006), Hopkinson and Demuth (2006), Luckman (2006), and Watson and Luckman (2004) provide such evidence for Peyto Glacier. Peyto Glacier is situated in the eastern
slopes of the Canadian Rocky Mountains and provides flow to the North Saskatchewan River Basin. This glacierized mountainous headwater region plays a critical role in providing orographically derived precipitation, seasonal snowmelt and glacier melt
to natural and human systems downstream. |
| GEOSCAN ID | 247448 |
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