11 Dossier(s) trouvé(s) à l’emplacement "Région désignée des Gwich'in" (les projets pluriannuels sont regroupés):
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THAWPOND-NWT – Remote sensing analysis of vegetation and thaw pond colour dynamics in the continuous permafrost zone: from local to regional (Northwest Territories, Arctic Canada)
chercheur principal: Vieira, Gonçalo
Année(s) de permis: 2023
Résumé: This licence has been issued for the scientific research application No. 5639. The goal of this research project is to better understand the characteristics of various different lakes, how their characteristics vary, as well as their potential relation to permafrost thaw events in the recent or distant past. The frequency of occurrence across space and time as well as the variability of: 1) opt...


Hydrothermal Regime of Riparian Terrain in Continuous Permafrost, Western Canadian Arctic
chercheur principal: Ensom, Timothy P
Année(s) de permis: 2022 2021 2020 2019 2018 2017
Résumé: This licence has been issued for the scientific research application No.5168. The specific objectives of the project are as follows: 1) Determine the spatial extent, distribution, and timing of winter icing events in streams along the Inuvik to Tuktoyaktuk Highway (ITH) through ground-based and aerial reconnaissance of stream crossings; 2) Identify relations between physical watershed charact...


Characterizing the sensitivity and response of freshwater systems to permafrost thaw in the Western Canadian arctic
chercheur principal: Hille, Erika C
Année(s) de permis: 2021 2021 2020 2019 2018
Résumé: This licence has been issued for the scientific research application No.4934. The purpose of this study is to develop a method of characterizing the sensitivity and response of streams and rivers to regional variability in permafrost thaw in the Beaufort Delta Region, Western Canadian Arctic. All of the field team members are from within the NWT. This field program will follow the attached E...


Permafrost in the western Arctic
chercheur principal: Kokelj, Steve V
Année(s) de permis: 2020 2019 2018 2017 2016
Résumé: This licence has been issued for the scientific research application No.4663. The primary objectives of this research are: 1) to develop and test new methods of monitoring permafrost landscape change; 2) to investigate the impacts of natural and human disturbance on permafrost terrain and the ground temperature conditions in natural environments and in communities; and 3) to assess the physical...


Permafrost, river, and groundwater inputs of trace elements and nutrients to the Mackenzie River estuary
chercheur principal: Charette, Matthew
Année(s) de permis: 2016
Résumé: The objectives are to measure a suite of trace elements and isotopes (TEIs) in the active layer and permanently frozen layer of permafrost cores sampled near the Mackenzie River, and to compare these concentrations to those observed in submarine groundwater discharge and Mackenzie River discharge in order to determine whether permafrost-associated TEIs are being transported to the coastal Arctic. ...


Permafrost regions in transition: controls on carbon cycling and greenhouse gas emissions
chercheur principal: Wookey, Philip A
Année(s) de permis: 2014 2013
Résumé: This research aims to understand what factors affect 1) the amount of carbon stored in tundra soils, and 2) the conversion of this soil carbon into greenhouse gases (carbon dioxide and methane). In particular, the research team wants to understand how hydrology (which is the distribution and movement of water in soils and streams) might affect the carbon cycle under future global warming. This inc...


Active Layer Monitoring Network in the Mackenzie Valley
chercheur principal: Nixon, Frederick M
Année(s) de permis: 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990
Résumé: The active layer, overlying the permafrost layer, is the surface earth material that thaws and re-freezes each year. Active layer thickness and character can influence hunting, fishing, forestry, gardening, transportation and construction. Changes in the active layer can contribute to landslides which may damage structures, hamper transportation, affect water quality, and influence surface and sub...


Snow accumulation/runoff in high latitude permafrost basins
chercheur principal: Marsh, Philip
Année(s) de permis: 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1990
Résumé: The primary objective of this project is to improve understanding of the changes in water and energy in northern regions, and to develop improved computer models of these processes. The Trail Valley Creek, Hans Creek, and Zed Creek sites will be accessed...


Investigation of ground ice development in sediments of the Mackenzie Delta area
chercheur principal: Burn, Chris R
Année(s) de permis: 1997 1996 1995 1994 1993 1992 1991
Résumé: The researcher will continue to collect samples of ground ice and measure temperatures in lakes and ponds. This information is used to help understand how the ground heaves as it freezes in winter, and to determine the extent of soil settlement during thaw in summer. The information about lakes is used to help understand the relations between water depths and temperatures beneath the lake....


Implications of climate change for slope stability in the Mackenzie Valley
chercheur principal: Dyke, Larry
Année(s) de permis: 1993
Résumé: In this ongoing study, the frequency and characteristics of landslides occurring in the Mackenzie Valley area are examined. I am trying to determine the roles that forest fires, climate changes and water flow in rivers play in the location and number of landslides. The field work will involve taking measurements on past landslides that include measuring permafrost features and taking core samples...


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