6 dossier(s) trouvé(s) portant l’étiquette "paleoenvironment" (les projets pluriannuels sont regroupés):
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Permafrost investigations, western arctic Canada
chercheur principal: Burn, Chris R
Année(s) de permis: 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998
Résumé: Samples of ground ice and permafrost soil, will be collected, and also air, ground and lake water temperatures measured. This information will be used to understand how permafrost conditions in the area have changed in the last few thousand years. We also measure ground movement to determine how the ground deforms during the year in particular we measure the tilting of trees at regular intervals t...


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....


Climate change and postglacial paleoenvironmental history of peatlands in the Mackenzie Delta area
chercheur principal: Vardy, Sheila
Année(s) de permis: 1993 1992
Résumé: This research is part of an international project that is aimed at documenting the history of changes in the treeline during the Holocene era. While much is known about the environment and climate of this era, little is known about the development of peatlands during this time. I will collect data on peat layering, pollen and fossils in order to determine how the peatlands developed during this ...


Pleistocene sand wedges and thermal contraction cracks on Richards Island
chercheur principal: French, Hugh
Année(s) de permis: 1993
Résumé: My research is about cracks in permafrost that have been filled in with wind-blown sand. In cliffs, these filled-in crackes appear as `veins' of sand. I will record the distribution and characteristics of these veins of sand. This information may help to determine the history behind how the cracks formed and the environmental conditions of the Mackenzie Delta up to 40,000 years ago....


Quaternary Geology and Periglacial Geomorphology of Banks Island
chercheur principal: Worsley, Peter
Année(s) de permis: 1988
Résumé: Dr. Worsley is coming from England with his research associates to continue his studies of how the rocks, landscape, and permafrost of Banks Island have changed in the last million years. He is interested in using this information to try to determine what conditions where like in England long ago....


Paleonenvironments of Southern Baffin Island
chercheur principal: Jacobs, John D.
Année(s) de permis: 1994 1993 1992 1991 1990 1988 1987
Résumé: To continue the work begun in 1978; to survey vegetation and terrain on the south shore of Amadjuak Lake and the operation of a meteorological station there; to install automatic weather stations and bulk precipitation collectors at two locations, one on the southeast side of Amadjuak Lake and the other on the west side of Nettilling Lake; to monitor environmental change in the interior of Baffin ...


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