Régions: Inuvialuit Settlement Region
étiquettes: climate change, glaciology, water balance, snow water equivalence, glacier health
| chercheur principal: | Burgess, David O (15) |
| Nᵒ de permis: | 15790 |
| Organisation: | Geological Survey of Canada |
| Année(s) de permis: |
2023
2022
2021
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
2009
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| Délivré: | déc. 08, 2015 |
Objectif(s): To estimate the amount of water equivalent mass the Melville South Ice Cap loses (or gains) on an annual basis.
Description du projet: The objectives of this study are: 1) estimate the amount of water equivalent mass the Melville South Ice Cap loses (or gains) on an annual basis, and 2) derive a long-term climate record from glacier measurements and weather station data in order to determine trends in climate change for this region of the Northwest Territories. Mass balance is measured at each of the 21 poles across the ice cap as function of snow depth and density (winter balance), and pole height difference over 2 successive visits (net balance) over the course of 1 full year. Observations at each pole are augmented with hourly temperature and snow pack/ ice height measurements collected from the automatic weather stations. Mass balance data is extrapolated across the entire ice cap in order to quantify the net annual mass balance and volume change of the ice cap as a whole. Shortly after each field season on the Melville South ice cap, the research team submit a summary of results including wildlife siting’s, climate, and glacier change measurements to the communities of Sachs Harbour and Ulukhaktok. This information gives the local communities background information pertaining to hunting and climate change that would otherwise not be available. Results are communicated through annual summary reports submitted to the Hunters and Trappers Committees of Sachs Harbour and Ulukhaktok. The reports are submitted upon returning to Ottawa after the field season is complete. The research team plans to visit these communities to deliver a presentation and discuss the changes that the ice cap has experienced over the previous decades. Results of the glacier measurements can also be accessed over the web at: http://pathways.geosemantica.net/WSHome.aspx?ws=NGP_SECG&locale=en-CA&c=1. The fieldwork for this study will be conducted from April 1, 2016 to May 31, 2016.
