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131 viewsKevin Schaefer drains his mud boots after a day of sloshing through wet tundra. (Kevin Schaefer, NSIDC)
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129 viewsDriving the Dalton Highway on August 15, 2012 becomes difficult as visibility drops to zero on Atigun Pass in the Brooks Range, Alaska. (Credit: Kevin Schaefer, NSIDC)
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129 viewsThe Alaska pipeline follows the Dalton Highway in the Brooks Range in this photo taken on August 15, 2012. The pipeline connects the oil fields at Prudhoe Bay with the tanker facilities in Valdez, a distance of over 800 miles. (Credit: Kevin Schaefer, NSIDC)
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128 viewsResearchers check their gear during the 2013 Arctic Observing Network (Snownet) project in Alaska.
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128 viewsA detailed image of hail after it has clustered together.
Photo Credit: NSIDC Courtesy Erica Key
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126 viewsTingjun Zhang, Alessio Gusmeroli, Lin Liu, and Tim Schaefer check gear before starting a new survey of active layer depth using ground penetrating radar on August 16, 2012. Zhang holds the radar controller while the yellow antenna rests at his feet next to a spool of survey line. (Credit: Kevin Schaefer, NSIDC)
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124 viewsThe crew from the Aurora Australis.
Photo Credit: Courtesy Ted Scambos, NSIDC
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123 viewsTim Schaefer slakes his thirst with ice chopped from an exposed ice layer at a thermokarst feature on August 19, 2012 near Toolik Lake, Alaska. (Credit: Kevin Schaefer, NSIDC)
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123 viewsThe equipment required to drill permafrost cores consists of shovels and a tarp, a motor to power the drill, a cooler to keep the samples frozen, a toolbox, a steel pry bar, and an augur drill bit. (Credit: Kevin Schaefer, NSIDC)
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123 viewsTundra bugs are always curious about permafrost researchers. (Kevin Schaefer, NSIDC)
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123 viewsAndy Parsekian sets up the ground penetrating radar equipment for a survey of active layer depth near Barrow, Alaska on August 13, 2013. (Credit: Lin Liu).
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permafrost, nsidc, kevin schaefer, alaska, barrow122 viewsAndy Parsekian, Kevin Schaefer, and Lin Liu use a ground penetrating radar to measure the depth of an ice wedge on August 15, 2013. The survey line lies perpendicular to the ice wedge and similar ice wedges crisscross the tundra in the background (Credit: Elchin Jafarov, NSIDC).
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