244 dossier(s) trouvé(s) portant l’étiquette "permafrost" (les projets pluriannuels sont regroupés):
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North Slave Permafrost Study: Characterizing and Predicting Discontinuous Permafrost for Climate Change Adaptation
chercheur principal: Wolfe, Stephen A
Année(s) de permis: 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010
Résumé: This activity describes and predicts the occurrence of discontinuous permafrost in the northern Great Slave Lake region to assist in planning, development and maintenance of community and industry infrastructure. Changes in climate are affecting permafrost distribution, temperatures and geotechnical conditions. Different landscapes across the region are exhibiting varying responses to warming. Thi...


Understanding changes in aquatic ecosystem health and water quality in the Fort Good Hope – Ramparts Area
chercheur principal: Gurney, Kirsty E.
Année(s) de permis: 2019 2018 2017
Résumé: The project aims to build community partnerships, identify field sites, and develop and implement sampling protocols for long term, community-based, monitoring of wetland ecosystems near Fort Good Hope (FGH). Whereas some wetlands in the study area have either already been, or are likely to be, impacted by a wide range of industrial activities, including development of oil and gas and associat...


Long-term aquatic ecosystem change at the southern limit of permafrost
chercheur principal: Korosi, Jennifer B
Année(s) de permis: 2019 2018
Résumé: The goal is to reconstruct long-term environmental change (hundreds to thousands of years) by examining chemical and biological fossil remains preserved in lake sediment cores, in order to better understand how thawing permafrost impacts lake ecosystems. 1) Water chemistry and plankton survey The research team will collect lake water samples from the study lakes to analyze for water chemistry...


PermASAR - Airborne SAR campaign on permafrost soils and boreal forests in the Canadian North-West
chercheur principal: Hajnsek, Irena
Année(s) de permis: 2019 2018
Résumé: For this project the research team will conduct the collection of microwave radar backscatter data of permafrost and boreal forest at wavelengths of 3cm (X-band), 6cm (C-band), 10cm (S-band) and 23cm (L-band). This process will capture two stable permafrost active layer states: thawed and frozen. The research team will derive information about permafrost (e.g. soil status, soil moisture) and about...


Remote Sensing and Geophysics of Tundra Landscapes
chercheur principal: Ullmann, Tobias
Année(s) de permis: 2019 2018
Résumé: The proposed project will investigate the possibility of linking field-measured characteristics of tundra landscapes (e.g., active layer thickness, soil moisture, plant distribution and ecosystem composition, etc.) with remotely-sensed data. The overall objective of the project is to identify the connections that exist between observable surface properties and their associated subsurface/permafros...


Short and long term effects of forest fires on the stability of carbon pools in the arctic permafrost and subarctic forests (ARCTICFIRE)
chercheur principal: Koster, Kajar
Année(s) de permis: 2018 2015
Résumé: The aim of this project is to study the short term and long term effects of different fire intensities on the decomposition of soil organic matter (SOM) in northern boreal forests under changing fire regimes. The objectives are to: 1) explore the short and long term effects of forest fires with different intensity on above- and belowground biomasses; 2) explore changes in albedo, snow depths an...


Permafrost mapping and food security vulnerability assessment in Jean Marie River First Nation Lands
chercheur principal: Laurent, Cyrielle C
Année(s) de permis: 2018
Résumé: The proposed project will build on the proven methodology used during previous permafrost studies in Jean Marie River First Nation (JMRFN). It aims to extend the vulnerability map by including the McGill and Deep Lake area. These lakes are traditionally and culturally very important to JMRFN (for example, the area surrounding these lakes is also used repeatedly by caribou year after year) and the ...


Application of passive seismic methodologies to the determination of overburden thickness in a permafrost-rich environment
chercheur principal: McPeak, Sara E
Année(s) de permis: 2018
Résumé: The objectives of this project are to test if passive seismics can be used to map the thickness of overburden in a permafrost-rich environment; and, to compare overburden thickness derived from passive seismic data and known overburden thickness from drilling. This project will test to see if the earth’s natural vibration can be used to determine how much sand, gravel, soil and permafrost are a...


Landscape Response from Altering Ice-Rich Terrain
chercheur principal: Lamoureux, Scott F
Année(s) de permis: 2018
Résumé: The goal of this study is to understand landscape response following ice-rich terrain alteration. The research team will install temperature loggers in 2" PVC pipe from the surface down to 3 m depth to monitor the ground temperature evolution over the summer season in the pits. The team will also use the geophysical technique electrical resistivity tomography (ERT) to measure the amount and st...


Impacts of 10 years of climate warming on forests and peatlands in the Dehcho
chercheur principal: Errington, Ruth
Année(s) de permis: 2018
Résumé: After 10 years of warming climate conditions, the Canadian Fire Service is leading a field project to re-measure a series of permanent monitoring plots to identify any changes to the forest stand structure, tree growth rates, plant community composition, tree, shrub, herb, and lichen biomass. These changes will be associated with climate trends and environmental factors such as soil type, presence...


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