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Taking Scientific Measurements19 viewsDetermining instrument location by theodolite. A theodolite is a high-precision surveying instrument. Because the ice floes rotated and changed in topography as they drifted, undergoing freezing and thawing, station members needed to regularly determine the position of the instruments relative to each other and to North. Image credit: EWG.
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Scientific Instruments25 viewsWhen the anchors were not insulated, the snow melted out from around the mast bases, causing them to topple. Image credit: EWG.
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269 views1971 AIDJEX pilot study. The University of Washington boundary-layer studies used divers to assemble current-meter masts under the water and to map under-ice topography
Image Credit: National Snow & Ice Data Center
AIDJEX Web site
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423 viewsMC Serreze stands atop Atigun Gorge.
Image courtesy Mark Serreze, NSIDC.
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263 viewsSnow Guru Matthew Sturm poses atop Atigun Gorge.
Image courtesy Mark Serreze, NSIDC.
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300 viewsAreas that contain much permafrost can look barren. But plants and animals prosper here in the summer days, when the top layer of frozen ground thaws. The caribou in this photograph, in the Noatak National Preserve, Alaska, are migrating in the early fall.
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Flattop397 viewsJohn Saunders standing beneath avalanche debris. In Trappers
Lake area in the Flat Tops Mountains, near Steamboat Springs,
Colorado.
Image Credit: Courtesy Lynn French, NSIDC.
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1071 viewsThis Landsat image of Crane Glacier on the Antarctic Peninsula is overlain with ICESat and Airborne Topopgraphic Mapper (ATM) tracks. ATM is a lidar sensor that is now part of the IceBridge mission. Over time, ICESat and ATM measurements, together with visible imagery, can detect thinning of the ice and accelerated flow of ice into the ocean. Large glaciers such as Crane have the potential to contribute significantly to sea level rise.
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1229 viewsResearchers stop to check out the snow during the traverse of East Antarctica.
Image Credit: Ted Scambos, NSIDC
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119 viewsScientists stand next to LIDAR rig
From left to right:
Christopher Hiemstra, Matthew Sturm, and Art Gelvin
Image courtesy Andrew Slater, NSIDC.
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232 viewsChristopher Hiemstra photographs some data.
Image courtesy Andrew Slater, NSIDC.
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97 viewsChristopher Hiemstra hikes on Atigun Gorge.
Image courtesy Andrew Slater, NSIDC.
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