Chronology of thaw flow and geochemistry of associated massive ground ice. Fort McPherson, Northwest Territories.

Regions: Gwich'in Settlement Area

Tags: physical sciences, slumping, geochemistry, ground ice, permafrost thaw

Principal Investigator: CLARK, Ian D. (5)
Licence Number: 14713
Organization: University of Ottawa
Licenced Year(s): 2011 2010
Issued: May 11, 2010
Project Team: Dr. I. D. Clark (Supervisor, University of Ottawa), Dr. B. Lauriol (Co-supervisor), Dr. D. Lacelle (PDF), M. Côté (M.a), M. Herod (M.Sc), J. Leblanc (M.a), L. Malone (M.Sc), K. Ali Poirier (Undergraduate), L. Tellier (M.Sc), A. Yard (Assistant)

Objective(s): The main goal of this project is to determine the distribution,nature and origin of thaw flows and the associated massive ground ice bodies in Fort McPherson region, Northwest Territories

Project Description: The main goal of this project is to determine the distribution, nature and origin of thaw flows and the associated massive ground ice bodies in Fort McPherson region, Northwest Territories.

This study will use sedimentological analyses and radiocarbon datation to determine the nature and age of sediment in which massive ice is included. Radardsat 2 image from the summer 2009 will be used to evaluate its potential to identify near-surface ice deposits and ancient slumps scars at the site.

Geochemical, isotopic and occluded gas analyses will be performed on the ice samples to determine its origin. Buried tree trunks in the sediments overlying the massive ice unit will be collected to establish a chronology of past slumping activity using dendrochronological approach.

The researcher will communicate with the local school to know if it is possible to present the study in a class. Otherwise it could be possible to make arrangements to present results at the community center.

In 2010 and 2011, the researchers hope to be able to make one or two presentations for the community in the Community Center. Otherwise the results will be sent to the community and they will be published in scientific journals. It will take 2-3 years between the research and the publication of the research results. A section of the web site (http://ice-cave.tumblr.com/) is dedicated to the project.

The fieldwork for this study will be conducted from June 1, 2010 to June 28, 2010.