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73 viewsField camp crew check the research plane on standby during the 2013 Arctic Observing Network (Snownet) fieldwork in Alaska.
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72 viewsBrooks Range provides a backdrop for instruments used in snow cover measurement during the 2013 Arctic Observing Network (Snownet) fieldwork in Alaska.
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69 viewsKevin Schaefer uses a hammer to pound a soil sample tube into the ground near Barrow, Alaska on August 13, 2013. (Credit: Elchin Jafarov, NSIDC).
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69 viewsResearchers prepare their snowmobiles during the 2013 Arctic Observing Network (Snownet) field project in Alaska's North Slope.
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67 viewsSnowmobiles stand by at field camp during the 2013 Arctic Observing Network (Snownet) project in Alaska's North Slope.
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66 viewsAndy Persekian, Lin Liu, Elchin Jafarov, and Kevin Schaefer pose next to whale bones at the Welcome to Barrow, Alaska sign. (Credit: Elchin Jafarov, NSIDC)
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66 viewsA researcher's winter gloves provide a sense of scale to sastrugi, sharp irregular grooves or ridges formed on a snow surface by wind erosion, seen during the 2013 Arctic Observing Network (Snownet) project.
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64 viewsThis plug of turf dug up near Barrow, Alaska shows a typical soil profile in tundra. The vegetation consists of moss and grass. A layer of dark brown organic matter extends down to a depth of 10 centimeters and beneath the organic layer is fine silt (Credit: Elchin Jafarov, NSIDC).
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61 viewsLin Liu and Andy Persekian check active layer depth measurements on a laptop as Elchin Jafarov looks on. (Credit: Kevin Schaefer, NSIDC)
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61 viewsLin Liu and Andy Persekian take a dip during a break from data gathering. (Credit: Kevin Schaefer, NSIDC)
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60 viewsKevin Schaefer drains his mud boots after a day of sloshing through wet tundra. (Kevin Schaefer, NSIDC)
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59 viewsLin Liu, Andy Parsekian, and Elchin Jafarov pull a ground penetrating radar unit through the tundra near Barrow, Alaska on August 10, 2013. The radar unit is in the box and the computer records the active layer depth (Credit: Kevin Schaefer, NSIDC).
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