1515 record(s) found with the tag "physical sciences" (multi-year projects are grouped):
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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): 2017 2016 2015
Summary: Through this project the research team will address the following objectives: 1) determine the net effect of permafrost thawing-induced biophysical and biogeochemical feedbacks to the climate system; 2) determine how these two types of feedback differ between the sporadic and discontinuous permafrost zones; 3) determine if s the reported decrease (increase) in net carbon dioxide (methane) exchange...


Early Paleozoic Earth-surface environments in NWT
Principal Investigator: Turner, Elizabeth C
Licenced Year(s): 2017 2016
Summary: The research proposed here is part of a long-term project aimed at understanding the distribution of marine environments in northwestern and northern Canada between 540 and 450 million years ago. The research team will measure, describe, and sample rock layers that are of roughly the same age but in different locations to see how ancient Earth-surface environments varied geographically about 54...


Examining the impacts of climate and environmental change on aquatic and terrestrial ecosystems of the Mackenzie region, NWT
Principal Investigator: Pisaric, Michael FJ
Licenced Year(s): 2017 2016 2015 2014 2013 2012 2011 2010 2009
Summary: This research will continue the long term objective of documenting and understanding the impacts of recent climate change on northern terrestrial and aquatic ecosystems. The short term objectives of this research are: 1) to investigate the impacts of permafrost degradation and subsequent thaw slumping on freshwater ecosystems; 2) to examine the limnological implications of drained lakes on aquatic...


Using the past to inform the future: A paleoecological perspective of the impacts of drought and fire on lakes, permafrost and forests
Principal Investigator: Pisaric, Michael FJ
Licenced Year(s): 2017 2016
Summary: The objectives of this research are to examine the frequency and severity of past wildfire and drought (drought-like) conditions in the southern Northwest Territories. Specifically, the research team will examine the following questions: 1) how frequent and severe have fires been in the past; 2) are fires becoming more frequent/severe due to the impacts of climate change; 3) what impact does wildf...


Geological Mapping of the March Fault
Principal Investigator: Hickey, Kenneth A
Licenced Year(s): 2017 2016 2015
Summary: The objective of this research project is to map the March Fault and the structures in the rocks that it cuts through to look for evidence of when it formed, how it formed, and how much relative movement has occurred along it. This research is primarily a field-based involving detailed geological mapping by foot along a series of traverses across the March Fault. The research team will use rock...


North Slave Permafrost Study: Characterizing and Predicting Discontinuous Permafrost for Climate Change Adaptation
Principal Investigator: Wolfe, Stephen A
Licenced Year(s): 2017 2016 2015 2014 2013 2012 2011 2010
Summary: 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...


Yukon-Northwest Seismic Network: Characterizing Earthquakes and Earth Structures
Principal Investigator: Audet, Pascal
Licenced Year(s): 2017 2016 2015 2014 2013
Summary: The objectives of this research project are 1) to improve the detection and characterization of earthquakes occurring within the northern Canadian Cordillera (comprising the Mackenzie and Richardson Mountains) and surrounding areas, which is one the most seismically active areas of Canada; and 2) to study the deep Earth structures to understand the formation and evolution of the Cordillera. To thi...


Teleseismic investigations of the crust and mantle structure beneath Banks Island, NWT
Principal Investigator: Audet, Pascal
Licenced Year(s): 2017 2016 2015
Summary: The goal of this project is to understand 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 ...


Toward Predicting Future Tundra Carbon Balance
Principal Investigator: Lafleur, Peter M
Licenced Year(s): 2017
Summary: The broad goal of this research is to increase the understanding of tundra carbon balance of terrestrial and aquatic ecosystems and predict into the future the impacts of climate warming on these systems. Since the research team are interested in all aspects of the tundra carbon balance a variety of methods are employed. These can be broken down into 4 basic categories: 1. Tundra-atmosphere ...


Impacts of forest fire on discontinuous permafrost in the south-western Northwest Territories
Principal Investigator: Lewkowicz, Antoni G
Licenced Year(s): 2017 2016
Summary: The goal of this project is to look at how permafrost is changing following forest fire over a range of environmental conditions, with the purpose of improving how change is modeled in the future. The fires of 2014 in the southwestern Northwest Territories (NWT) provide an opportunity to examine how discontinuous permafrost responds to disturbances. This work is being carried out in collaboration ...


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