Régions: Inuvialuit Settlement Region, Gwich'in Settlement Area
étiquettes: physical sciences, permafrost, remote sensing, permafrost mapping
| chercheur principal: | Nguyen, Thai-Nguyen (2) |
| Nᵒ de permis: | 13992 |
| Organisation: | Carleton University |
| Année(s) de permis: |
2006
2005
|
| Délivré: | juin 05, 2006 |
| Équipe de projet: | Julian Kanigan (Assistant, Carleton University), Douglas Esagok (Assistant, Inuvik HTC), Les Kutny (Assistant, Inuvik), Willy Simon (Assistant, Inuvik HTC) |
Description du projet: The climate and numerous field reports indicate that permafrost should be continuous in the Mackenzie Delta. However, the most recent permafrost map in the Atlas of Canada classifies the delta as having discontinuous permafrost. Yet, no extensive fieldwork covering the entire delta has ever been realized. Unfrozen conditions beneath the ground, near shifting channels, have been recognized by various authors, and the absence of permafrost seems to occur because of the slow thermal recovery of these new land surfaces combined with the insulating effects of deep snow blown by wind off the channels and trapped in vegetation. The objectives of this research are to determine the proportion of the delta underlain by near-surface permafrost and to establish the applicability of remote-sensing in permafrost mapping in the Mackenzie Delta. In the summer, fieldwork will concentrate on probing for the presence of permafrost at sites representing different terrain types identified previously through satellite imagery. Instrumentation will consist of a metal rod or water-jet drilling with temperature probes. Field sites will be reached by boat, aircraft, or foot. The findings of the research will be shared with the community organizations through presentations, reports and publications. The study will be conducted from June 15 to August 31 at the following locations: Taglu (69° 22´ 134° 57´), Reindeer Station (68 °41´ 134° 11´), and Rengleng River (67° 52’ N 134° 45’ W).
