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You are browsing the archive for Juneau Icefield glacier detachment Archives - From a Glacier's Perspective.

April 26, 2022

East Twin Glacier Retreats from Twin Lake with Developing Icefield Disconnection

East Twin Glacier in Sentinel 2 images from 2017, 2019 and 2021. Point A marks the threshold, B the terminus contact with lake in 2017, Point 1 is the first ogive above the terminus. East Twin Glacier is a narrow valley outlet glacier from the Juneau Icefield.  The glacier descends from the icefield through an icefall at 975 m- 600 m that generate ogives at the icefall base. The extensive …

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November 14, 2021

Field Glacier, Alaska Retreat, Separation and Rapid Lake Development 1984-2021

Field Glacier on Aug. 31, 2021 in a Sentinel image. Note former glacier junctions A and B where the glacier has separated this century. The 7.5 km2 lake did not exist when I first visited this glacier. The Field Glacier flows from the northwest side of the Juneau Icefield, and is named for Alaskan glaciologist and American Geographical Society leader William O. Field. Bill along with his work around Glacier …

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