Backcountry Pilot • Regurgitated Alaska TR: Aleutian Volcanoes

Regurgitated Alaska TR: Aleutian Volcanoes

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Regurgitated Alaska TR: Aleutian Volcanoes

This set of photos comes from Stromboli Online, a very cool volcano/geology site. These photos are so amazing though, and the fact that they're taken from a Cherokee Six, makes them BCP worthy.
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Photos by Marco Fulle, taken on a two hour charter flight on 23 Sept 2007, starting at 11 am, during a brief pause between strong storms. The sun was shining from the SSE; this may help to understand the orientation of the photos.

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Rainbow at Cold Bay airport; our piper aircraft is ready for takeoff for a flight to Unimak Island.

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The perfect cone of Shishaldin rises high above a deck of stratocumuls clouds. Pogromni volcano far right.

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Whereas Shishaldin is a superb example of a young, symmetric stratovolcano, the much older Isanotski is irregular and deeply eroded.

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Except for the topmost part Shishaldin's uppermost flanks are covered by glaciers. Their fast flow leads to intensive crevassing.

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Runoff from the Shishaldin's glaciers feeds into rivers meandering through coastal plains towards the Pacific Ocean (upper right).

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Whereas Shishaldin's summit cone is very steep, its lower flanks are much flatter. Isanotski and Roundtop Mountain in the background.

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Note the fresh ice covering the andesitic lava flows erupted during the last activity of 1999.

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The nearer half of Isanotski's summit crater rim has collapsed. The crater is now occupied by a glacier of considerable size.

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Isanotski from the north: Note how the rock pinnacles forming the summit ridge are encrusteed by big frost deposits.

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Isanotski (left) and Shishaldin (right) rise over the cloud deck covering the Bering Sea shoreline.

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After leaving Unimak Island a storm begins. As heavy rain sets in it's a good time to be back and land at Cold Bay airport.
Zzz offline
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Beautiful pictures! Did it smell at all?
alaskadrifter offline
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That brought back memories....thanks. I worked for three years in Cold Bay. Unimak and its volcanoes were a major part of my "beat". Watched the eruption of a smaller volcano on the west end of the island in 1977 from a Cub. Very impressive, with ash clouds well above 300, as reported by airliners. Westdahl is the name of that one.

Unimak is an amazing island, with some truly interesting geologic features. Some of them are changing all the time.

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