1578 record(s) found with the tag "physical sciences" (multi-year projects are grouped):
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Impact of climate change on catchment biogeochemistry in plains and shield regions
Principal Investigator: Olefeldt, David
Licenced Year(s): 2018
Summary: The objective of this research is to identify impacts of climate change and permafrost thaw on pond methane emissions, and on water chemistry in streams that drain peatland-rich catchments. Impacts on methane emissions will be assessed. Specific objectives are: 1) to characterize the trends and variability in magnitude of methane emission from ponds along climate gradients within both the Taiga...


The frontline of permafrost thaw: a transect of eddy covariance towers across the southern Taiga Plains to better understand changing regional carbon and water budgets
Principal Investigator: Sonnentag, Oliver
Licenced Year(s): 2018 2018 2017 2016 2015 2014 2013
Summary: Through this project the research team will address the following objectives: What is the net effect of permafrost thawing-induced biophysical and biogeochemical feedbacks to the climate system? How do these two types of feedback differ between the sporadic and discontinuous permafrost zones? Is the reported decrease (increase) in net carbon dioxide (methane) exchange based on plot- (<1m2) and eco...


Remote Sensing and Geophysics of Tundra Landscapes
Principal Investigator: Ullmann, Tobias
Licenced Year(s): 2018
Summary: 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...


Impacts of wildfire extent and severity on caribou habitat
Principal Investigator: Baltzer, Jennifer L
Licenced Year(s): 2018 2017 2016
Summary: The main objective of this fieldwork is to support the collection of data for predictive caribou habitat mapping within the forested areas of the Taiga Plains and Taiga Shield Ecoregions in NWT, roughly south of Great Bear Lake. The research team will complete the establishment of a network of long-term study plots across a range of fire characteristics and vegetation types, where the team will me...


Impact of ferry landings on water quality and traditional fish harvesting in the Mackenzie and Peel Rivers
Principal Investigator: Gray, Derek K
Licenced Year(s): 2018
Summary: Fishing is an important part of the Gwich’in way of life. Concerns in the Gwich’in communities of Fort McPherson and Tsiigehtchic have arisen with regards to the use of granular material in ferry landings. Anthropogenic sediment from ferry landings has the potential to alter river ecology downstream thus impacting valuable fish habitat. The objectives of this research project are to determine ...


Structural Framework for the Cantung Tungsten Deposit and its Relation to the Regional Deformation History
Principal Investigator: Salmabadi, Ehsan
Licenced Year(s): 2018
Summary: The objective is to conduct a structural analysis of the Cantung Tungsten Mine and its geological environment to: 1) reconstruct the deformation history responsible for fold geometry that hosts the Cantung tungsten deposit; and 2) understand how the deformation at Cantung is linked to deformation history of the surrounding area. Research will be conducted through field mapping using a compass, ...


Long-term aquatic ecosystem change at the southern limit of permafrost
Principal Investigator: Korosi, Jennifer B
Licenced Year(s): 2018
Summary: 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...


Investigating the quality of water runoff from different terrain types found along the Dempster-ITH corridor
Principal Investigator: Hille, Erika C
Licenced Year(s): 2018
Summary: The objectives of this project are: 1) to examine the water quality of streams located along the Dempster and Inuvik-Tuktoyaktuk Highway corridor, to assess the relative importance of latitude (or climate) and surficial geology (e.g., glaciated, unglaciated, upland, peatland, riparian) in controlling water quality; and, 2) to examine the water quality of streams at key points in the year, to in...


Teleseismic investigations of the crust and mantle structure beneath Banks Island, NWT
Principal Investigator: Audet, Pascal
Licenced Year(s): 2018 2017 2016 2015
Summary: This project is aimed at understanding the structure and evolution of the crust and mantle beneath Banks Island in the western Arctic by analyzing new seismic data collected from an array of broadband seismic stations. The objective is to provide information on crustal and mantle structures to determine whether Banks Island forms a rifted margin, or forms the northern extension of the Canadian Shi...


2018 Richardson Mountains
Principal Investigator: Hadlari, Thomas
Licenced Year(s): 2018
Summary: Some models for opening of the Arctic Ocean place Alaska against the Canadian Arctic Islands before Cretaceous time. Other models using orthogonal continental drift place the counterpart to the Canadian Arctic Islands in northern Russia. The two models predict very different structural dynamics at the potential hinge point of rotation and so the Richardson Mountains are a critical area for resolvi...


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