Roundup: Subglacial Drainage, Extremophiles and Yellowstone Name Change

Subglacial Drainage Under a Valley Glacier in the Yukon

From The Cryosphere: “The subglacial drainage system is one of the main controls on basal sliding, but remains only partially understood. Here we use an 8-year dataset of borehole observations on a small, alpine polythermal valley glacier in the Yukon Territory to assess qualitatively how well the established understanding of drainage physics explains the observed temporal evolution and spatial configuration of the drainage system.”

Read more about the study here.

Kathleen Lake Yukon on GlacierHub
Kathleen Lake in Klaune National Park, Yukon (Source: Creative Commons).

 

Extremophiles at Deception Island Volcano in Antarctica

From Extremophiles: “Deception Island is notable for its pronounced temperature gradients over very short distances, reaching values up to 100 °C in the fumaroles, and subzero temperatures next to the glaciers. Our main goal in this study was to isolate thermophilic and psychrophilic bacteria from sediments associated with fumaroles and glaciers from two geothermal sites, and to evaluate their survivability to desiccation and UV-C radiation. Our results revealed that culturable thermophiles and psychrophiles were recovered among the extreme temperature gradient in Deception volcano, which indicates that these extremophiles remain alive even when the conditions do not comprise their growth range.”

Learn more about extremophiles here.

Image of an extremophile, Tardigrades, which are found in a range of extreme environments (Source: E. Schokraie et al./Creative Commons).

 

Native Americans Seek to Rename Yellowstone Peak

From The Guardian: “A valley in Yellowstone National Park in Wyoming, formed by a glacier, may get a new name. Hayden Valley is glacial, dating back to the last Ice Age. It was named after a surveyor, Dr. Ferdinand V. Hayden who advocated removing Native Americans from the region. The Great Plains Tribal Chairman’s Association, comprising tribal chairmen of 16 Sioux tribes from Nebraska and the Dakotas, is pursuing an application to change the name of Hayden Valley to Buffalo Nations Valley.”

Find out more about the news here.

Hayden Valley Yellowstone on GlacierHub
Hayden Valley (Source: Yellowstone National Park).

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