Permafrost thaw Archives - Faculty of Environmental and Urban Change

Permafrost thaw slumping in lakes in the Mackenzie Delta region

paultran — Wed, 10 Nov 2021 20:35:29 +0000

by Charlie West The Mackenzie Delta region is the largest Arctic delta in North America and the second-largest in the circumpolar North. Located in the northern Northwest Territories, the Mackenzie Delta region is part of the traditional territories of the Gwich’in and Inuvialuit peoples. The region is almost entirely underlain with ice-rich permafrost, meaning the […]

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Impact of changing hydrology on lake water quality

paultran — Thu, 21 Oct 2021 21:17:45 +0000

Kristen Coleman, a PhD candidate in Professor Jennifer Korosi’s lab and a Weston Family Northern Scientist, studies impacts to lake water quality as a result of permafrost thaw near the southern extent of permafrost in the Northwest Territories (NT), Canada. Here permafrost is sporadic, occurring beneath 10-50% of the landscape. She focuses on the impacts […]

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Tracking changes in permafrost thaw slumps between 2005 and 2017 on lakes in the Mackenzie Delta Uplands

paultran — Thu, 19 Aug 2021 17:46:00 +0000

The Arctic is warming at more than double the global rate, increasing stress on landscapes and ecosystems. Permafrost, defined as ground that is continuously below 0°C for at least two consecutive years, is degrading rapidly in response to warming air temperatures and altered precipitation regimes, representing a formidable threat to the Arctic landscape. Claire O’Hagan, […]

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Clear as Mud: Tracking Arctic Permafrost Thaw Using Lake Sediments

paultran — Thu, 22 Jul 2021 18:35:44 +0000

The mud at the bottom of a lake isn’t just mud, it contains within it clues that, once decoded, tell us how the environment has changed over time. Clues can be anything that sinks to the bottom of the lake and is deposited into the mud. Often, this includes things that were living (and died) […]

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