Audio described versions of these videos are available on this channel.
Landscape Processes
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Ice Wedges
Ice wedges resemble a giant quilt when seen from the air and form only where permafrost is found.
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Pingos
Pingos are hills that rise abruptly out of flat Arctic landscapes formed by ice expansion.
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Permafrost Slumps in 3D
When permafrost thaws, the results can include huge crater-like landforms called thermokarst slumps. We map the slumps in 3D.
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Thermokarst in Alaska's Arctic
Permafrost underlies most of Alaska's Arctic. Thawing of permafrost produces pits, ponds, lakes, slumps and landslides
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Aufeis in Alaska's Arctic
Also known as "icing," aufeis forms by the overflow and freezing of water during the winter.
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Seasonal Changes in Arctic Parks
Images from remote cameras at climate stations help us document seasonal changes across Arctic parks.
Vegetation
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Birch, Aspen, and Poplar
Arctic and subarctic hardwood forests are made up of just three tree species: aspen, birch, and poplar. Learn more about them.
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Black Spruce
Black spruce is well adapted to life in the north. It can survive in many places other trees can't.
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Tundra Tussocks
Tussocks are small mounds commonly found in the Arctic tundra. Most are made by a sedge, cotton grass, that thrives in the cold, wet Arctic.
Water
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Lagoons of Arctic Alaska
Lagoons dominate the remote shorelines of northern Alaska, yet are relatively unstudied.
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Cleaning Up Marine Debris
Marine debris is an issue of growing concern for Alaska's coastal parks. We work with partners to clean-up debris that's washed in.
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What is Marine Debris?
Marine debris washes in on the coasts of Alaska parks. We are working to clean it up.
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Alaska Glaciers Status and Trends
Glaciers in Alaska's parks are dynamic features that are vulnerable to climate change. We track changes in park glaciers.
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Glaciers - Why Should We Care?
Glaciers are enormous and dynamic features of Alaska’s parks that are rapidly changing.
Wildlife
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Alaska's Yellow-billed Loons
Yellow-billed Loons raise their young in Arctic Alaska, each year. We monitor the breeding population in Arctic parks. See video playlist.
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Counting Sheep in Alaska
Dall's sheep, are indicators of large-scale change in the alpine environment. Click here to see the video playlist for sheep studies.
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The Great Journey North
Over 160 species of birds migrate to Bering Land Bridge National Preserve. Explore their journey and motivations.
Last updated: May 16, 2024