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permafrost, nsidc, kevin schaefer, alaska, barrow249 viewsKevin Schaefer pulls a ground penetrating radar unit through the tundra near Barrow, Alaska on August 14, 2013 to measure the active layer depth. The radar unit (in the box) emits a pulse which reflects off the permafrost to measure the active layer depth, which is recorded in the computer held by Andy Parsekian (Credit: Elchin Jafarov, NSIDC).
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249 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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249 viewsLin Liu checks the day's data at basecamp. (Credit: Kevin Schaefer, NSIDC)
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249 viewsLin Liu pulls a ground penetrating radar unit through the tundra in rainy weather. The survey near Barrow, Alaska measures active layer depth. The radar unit (in the box) emits a pulse which reflects off the permafrost to measure the active layer depth, which is recorded in the computer held by Andy Parsekian. (Credit: Kevin Schaefer, NSIDC)
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249 views
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249 viewsAnother close-up of the snow pit. You can see the floor of the pit better in this shot where there is darker ice. The yellow strip is a measuring tape.
Photo by John Maurer, CIRES/NSIDC, University of Colorado.
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249 viewsNic shoveling snow away from around the Swiss Camp tents.
Photo by John Maurer, CIRES/NSIDC, University of Colorado.
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249 viewsDinner and a glass of wine after a hard days' work! Cheers!
Photo by John Maurer, CIRES/NSIDC, University of Colorado.
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248 viewsToolik Field Station is marked by this brighly colored sign.
Image courtesy Andrew Slater, NSIDC.
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248 viewsMatthew Sturm poses on a frozen lake during the 2009 SnowNet project.
Image courtesy Andrew Slater, NSIDC.
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248 viewsThis photo looks down a fracture in the ice.
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Shari Gearheard247 viewsNSIDC Scientist Biography
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