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August 26, 2023

Allen Glacier, Alaska Terminus Tongue Breakoff 8-21-2023

Allen Glacier terminus in Landsat image from 8-21-2023 indicating the three new icebergs with an area of 1.5 km² that calved. Lake area is now 14 km². Allen Glacier drains east from the Chugach Mountains terminating in an expanding proglacial lake adjacent to the Copper River. In 1987 the terminus filled most of the proglacial with only the northeast corner open, lake area 2 km². A landslide is also evident …