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EJ_0034.jpg
125 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).
KS_APE_Jul11_184.jpg
125 viewsStandford University scientist Lin Liu and research volunteer Tim Schaefer are attempting to remove a drill bit that accidently froze into the permafrost at a site just south of Deadhorse, Alaska on July 11, 2009. The researchers spent eight hours chipping the drill bit out of the permafrost using a crowbar, pry bar, and a hammer (Credit: Kevin Schaefer, NSIDC)
Toolik_2013_04.jpg
125 viewsPart of Brooks Range rises over the distance.
AIDJEX1972_058.jpg
124 viewsAIDJEX 1972 pilot study. Inside NASA convair 990, W.Campbell at left.
Image Credit: NSIDC courtesy Tom Marlar/CRREL
AIDJEX Web site
KS_1034.jpg
124 viewsLin Liu and Andy Persekian check active layer depth measurements on a laptop as Elchin Jafarov looks on. (Credit: Kevin Schaefer, NSIDC)
AIDJEX1972_071.jpg
123 viewsAIDJEX 1972 pilot study. Inside NASA cv990 Murray Stateman at right
Image Credit: NSIDC courtesy Tom Marlar/CRREL
AIDJEX Web site
KS_APE_Jul10_129.jpg
123 viewsStandford University scientist Lin Liu, NSIDC senior research scientist Tingjun Zhang, and research volunteer Tim Schaefer pull the auger bit containing a permafrost core out of a newly drilled hole near Deadhorse, Alaska on July 10, 2009. (Credit: Kevin Schaefer, NSIDC)
AIDJEX1972_070.jpg
122 viewsMurray Stateman AIDJEX 1972 pilot study
Image Credit: National Snow & Ice Data Center
AIDJEX Web site
KS_APE_Jul14_276.jpg
122 viewsOn the 2009 trip to drill permafrost samples, the researchers’ truck was so loaded with equipment that retrieving anything required a headlong dive into the back. Here, Standford University scientist Lin Liu dives into the truck to retrieve his toothbrush in the morning. (Credit: Kevin Schaefer, NSIDC)
KS_1159.jpg
121 viewsKevin Schaefer drains his mud boots after a day of sloshing through wet tundra. (Kevin Schaefer, NSIDC)
KS_APE_Jul10_123.jpg
121 viewsResearch volunteer Tim Schaefer, Standford University scientist Lin Liu, and NSIDC senior research scientist Tingjun Zhang drill a permafrost sample south of Deadhorse, Alaska on July 10, 2009. The head nets protect the researchers from the clouds of mosquitoes that continually swarmed around them. (Credit: Kevin Schaefer, NSIDC)
TS_03_7HailCluster.jpg
121 viewsA detailed image of hail after it has clustered together.
Photo Credit: NSIDC Courtesy Erica Key
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