Sveta Berezoskaya and Romain Provost measure stream flow of a small creek near Barrow.
Credit: Anna Liljedahll
Drunken trees in a black spruce forest near Fairbanks, Alaska. As permafrost thaws, the ground subsides, and surface moisture conditions can become too wet for the trees to survive.
Credit: Miriam Jones
Thermokarst lakes in the Yukon-Kuskokwim Delta.
Credit: Miriam Jones
The rhizones pictured above are used to extract microbe samples from the sediment core. The microbes being studied are responible for producing and oxidizing methane.
Credit: Mat Wooler
The wind near Barrow, Alaska has carved and packed this snow surface.
Credit: Sveta Berezovskaya
Douglasia ochotensis grows 30 miles south of Prudehoe Bay, Alaska. It is one of the first flowers to bloom in the Arctic sometime in June.
Credit: Sveta Berezovskaya
Joel Bailey and Peter Prokein install equipment that will send weather data back to the University of Alaska Fairbanks some 200 miles to the south.
Credit: Sveta Berezovskaya
Rainbow over a peatland in the Susitna Valley, just to the south of the Alaska Range.
Credit: Miriam Jones
The Alyeska oil pipeline seen from an altitude of 500 feet about 20 miles south of Prudhoe Bay. The pipeline acts as a snow fence which retains more snow than the surrounding tundra.
Credit: Sveta Berezovskaya
The polygonal fractures in this tundra near the Deadhorse airport are caused by repeated thawing and freezing.
Credit: Sveta Berezovskaya
Robert Gieck and Joel Homan take stream flow measurements with a hand held FlowTracker in late May 2007
Credit: Sveta Berezovskaya
Weather conditions in early April cultivate this rime ice on a precipitation gauge in Barrow. Rime forms when supercooled droplets collect and rapidly crystalize on a surface.
Credit: Sveta Berezovskaya
Thermally-grown ice becoming 'candled' as it decays on an Arctic lake south of Deadhorse on June 9, 2009.
Credit: Sveta Berezovskaya
Itkillik River surface water monitoring station, view from the bluff, near the northern foothills of the Brooks range
Credit: Emily Youcha
Massive ice wedge on near Cape Espenberg.
Credit: Miriam Jones
Permafrost degradation on the southern Seward Peninsula. The lake formed as a previously frozen ice wedge thawed.
Credit: Miriam Jones
Rainbow on the southern Seward Peninsula.
Credit: Miriam Jones