US EditionNASA satellites spot brand-new island in Alaska formed by melting glacier
Prow Knob, a 2-square-mile landmass, became an island after Alsek Glacier retreated over 3 miles since 1984, doubling Alsek Lake's size, NASA confirmed.
- A retreating glacier revealed a new island in Alaska this summer, surrounded by Alsek Lake.
- Pelto anticipated that the Alsek Glacier would detach from the land mass known as Prow Knob, leading to the formation of this island.
- Prow Knob measures about 2 square miles and has a peak of over 1,000 feet.
- Alsek Lake has grown over time as glaciers continue to retreat.
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The Alsek glacier in the southeast of Alaska melts at a high speed – and creates islands where land masses used to be. Nevertheless, the fact that the water level does not rise off the shore of the state is due to a little-known phenomenon.
The retreat of a glacier led a piece of land to be completely surrounded by a lake
Satellite images show a new island appearing in Alaska
There are different ways that islands can form. Some take several million years, such as the magmatic hotspots where magma plumes from deep within the planet reach the surface and form something like the Hawaiian island chain, and others like the mud volcanoes off the coast of Azerbaijan. However, an island in the middle of Alsek Lake in Alaska took a slightly different route (Picture: NASA Earth Observatory / Michala Garrison) Prow Knob i…
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