duane froese
@tephrafan
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professor | northern research | permafrost | Quat Geo | working with northern communities | PACS Lab | Rett Syndrome | he/him
Edmonton, Alberta
Joined June 2010
The new website for the Permafrost ArChives Science Lab is up. PACS is a multi-user facility and the first ice core style lab dedicated to permafrost science and engineering, inlud. dedicated facilities for CT and core scanning, ancient eDNA clean labs.. https://t.co/94WRH2gHQW
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A nice profile of Beth Shapiro (@bonesandbugs). We’ve worked together for 20+ years. Always creative and one of the biggest critics of de-extinction is redefining what it might mean for conservation genetics @colossal. Worth a read.
washingtonpost.com
The company she works for is betting millions it can realize a once-far-fetched idea of “de-extinction.”
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Our new paper in ERL from the Fox Permafrost tunnel near Fairbanks AK.
New stable isotope paper 4 Fairbanks, AK #permafrost. Meteoric water line + cores yield insight into climate over past ~40 k years. Warmed ~9C in past 18 k years, almost a third of that since the 1970s. @IOPenvironment W/ @tephrafan @mildlybasic Ali Monteath @PhysicsNews Link:
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Follow up. New drill worked well to 2.5m in peat and lacustrine sediments. Will play around with more aggressive core barrels since there is less weight on the coring head but no lack of power and beautiful cores. #permafrost #Sahtu
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Here, an area of Lake Mackenzie sediments that burned last July. The loss of peat and vegetation cover will drive thaw over the next few years. The lacistrune sediments that underlie these surface organic layers can be > 70% ice.
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The ice-rich sediments of glacial lake Mackenzie make for great scenery but represent some of the most thaw sensitive terrain of the central valley. Last year’s fires hit a lot of this terrain near Tulit’a. This will drive rapid thaw. #Sahtu #permafrost
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Prepping for our last field work of the fall to the Sahtu region next week. We’ve built a new 4” drill for our partners at K’asho Got’ine (not pictured) as they build their permafrost monitoring capacity, and will test this portable 3” to take cores to 2 m. All custom (read $$).
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My latest article in Yale Environment 360 As Canadian River Shrivels, Northern Communities Call for a Highway https://t.co/Ceeh9pz1i6 via @YaleE360
e360.yale.edu
With the Mackenzie River too low for barge traffic, villages in the Northwest Territories are flying in food, fuel, and other essentials. A proposed highway could offer a lifeline as climate change...
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W rapping up the NSERC Create Permafrost graduate training in Inuvik. Co-taught with colleagues Steve Kokelj, Suzanne Tank and Oliver Sonnentag. Fantastic experience— tremendous group. A few photos.
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First day of Permafrost field school in Inuvik. Visiting the Navy Road burn where permafrost response has been monitored for 50+ years with Steve Kokelj. Followed by an afternoon tour of permafrost issues in Inuvik with former mayor Peter Clarkson #NSERC, #CREATE #PermafrostNet.
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More airplane photography. We passed the Ramparts of the Mackenzie near Fort Good Hope. Rapids well exposed before the narrowing. Also nice view of the Tuyeta protected area— the lake rich landscape formed by the impounding of L Mackenzie at the Ramparts on right side. #Sahtu
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I am an expert at poor quality landscape photography from commercial flights. A few shots from Yellowknife (very smoky), Dehcho (Mackenzie) south of Tulit’a looking toward the Redstone (sharp bend joining Dehcho), and view of Tulit’a down the Great Bear River in the #Sahtu
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Discussion is open for our new paper on CT methods to characterize ground ice in permafrost. #PACSLab
Discussion open for comments on @EgUsphere: Ground ice estimation in permafrost samples using industrial Computed Tomography
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A Latest Pleistocene turbic cryosol, probably about 16,000 years old. Tephra (probably the 80ka Sheep Creek K) and a very large horse. With Yukon palaeontology folks.
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Spending this week in the Klondike with my colleagues from Yukon Palaeontology prepping our #ICOP2024 permafrost field excursion later this week. Today. Lots of ground ice, Middle Pleistocene horses and reconnecting with old friends.
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View downriver on the Deh Cho at Norman Wells yesterday afternoon.
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Wrapping up two days of community meetings in Fort Good Hope today. Discussing permafrost, community hazards and supporting development of the community plan. Lots of issues increasing for the community as climate change impacts grow. Beautiful spring day. Great hospitality.
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Arctic defence means building Mackenzie Valley Highway, Sahtu says - https://t.co/VSoQFxKwdH via @cabinradio
cabinradio.ca
Just as Canada pledged to spend big on Arctic security, Sahtu leaders rolled out a campaign to build the Mackenzie Valley Highway on national defence grounds.
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