113 record(s) found with the tag "physical sciences" (multi-year projects are grouped):
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Prospecting for Earth’s oldest rocks using geochemical signatures of Pleistocene glacial sediments
Principal Investigator: Bilak, Grayson S
Licenced Year(s): 2017
Summary: For this research the Principal Investigator (PI) propses an innovative combination of quaternary geology, isotope geochemistry, and Precambrian geochronology that will identity previously unmapped outcrops of ancient continental crust in the Acasta Gneiss Complex (AGC). An age range and bedrock composition will be generated for the research area and used to help further the understanding of the p...

Erosion of old organic carbon in the Mackenzie River Basin
Principal Investigator: Hilton, Robert G
Licenced Year(s): 2017 2013 2011 2010 2009
Summary: The objective of this research is to better quantify the carbon source, age and fate in one of the largest rivers draining the high latitudes. The research team will sample river sediments and waters to establish temporal variability in OC source and age. The team will target high and falling flow (in June) when most sediment and water are exported. The research team will directly measure velo...

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): 2018 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...

Palaeontology of the Summit Creek Formation, western Northwest Territories, Canada
Principal Investigator: Vavrek, Matthew J
Licenced Year(s): 2012
Summary: The research team will be prospecting for and collecting Cretaceous fossils from the Summit Creek Formation in order to better understand what terrestrial biodiversity was like at high latitudes at that time. This project is a continuation of the collaborative research program on ancient biodiversity in the Canadian Arctic. Recently, the research team completed work supported by Polar Continental ...

EL462 and EL463 Aggregate and Permafrost Mapping - Geophysical Survey and Confirmatory Drilling
Principal Investigator: Hansen, Ken
Licenced Year(s): 2013 2012
Summary: The objectives of this research project are to provide a better understanding of the permafrost under a proposed road right-of-way (ROW) and to delineate potential aggregate deposits. This will include mapping: permafrost distribution, massive ice bodies (including wedge ice), depth to massive ice, lower contacts of massive ice, zones of thermokarst, ice rich sediments (thaw sensitive), active la...

Investigation of a possible impact structure on Victoria Island, NWT
Principal Investigator: Osinski, Gordon
Licenced Year(s): 2015 2012
Summary: The objectives of this research are to: (1) Confirm of a meteorite impact origin for the Collinson Inlet structure. In order to confirm the meteorite impact origin of this structure, unequivocal shock metamorphic criteria need to be documented. Shatter cones are the only diagnostic shock effect visible to the naked eye (French and Koeberl 2010). The research team will seek out the potential s...

Long term river flow and climate conditions reconstructed from lake sediments
Principal Investigator: Lamoureux, Scott F
Licenced Year(s): 2012
Summary: The research team seeks to obtain sediment cores from two lakes in order to reconstruct past river flow in the region. This work, which builds on similar efforts at "Shellabear" lake, NWT, and work at Cape Bounty (Nunavut), will focus on long term river flow characteristics and the climate factors that control them. The fieldwork involves augering a hole in the lake ice and lowering a tube int...

Diavik Aquatic Effects Monitoring Program 2011
Principal Investigator: Moore, Kristin M
Licenced Year(s): 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2005 2004 2003 2002 2001
Summary: To revisit fixed sample stations over the course of a year in an effort to determine any seasonal variation that may exist and confirm impact predictions. The study will encompass the following water based parameters: water quality, zooplankton & phytoplankton biomass and taxonomy, benthic invertebrate analysis and sediment chemistry. This program also includes dust monitoring and fish health. ...

Flux of sediment-associated chemical elements in rivers draining to the Arctic Ocean
Principal Investigator: Bogen, Jim J
Licenced Year(s): 2010
Summary: The objective of this research is to estimate the modern and historical fluxes of sediment- associated chemical elements to the Arctic Ocean and their relationships to natural and man-induced changes in sediment yields and sediment sources and if possible, predict the impact of future climate changes on the fluxes. The study will include sampling of overbank sediments from floodplains and del...