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Published byOswald Ramsey Modified over 8 years ago
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Long-Term Active Layer and Ground Surface Temperature Trends: Results of Observations at Alaskan CALM Sites Nikolai Shiklomanov, University of Delaware
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CIRCUMPOLAR ACTIVE-LAYER MONITORING (CALM) NETWORK
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Ground Surface Temperature Thaw depth Frost Heave / Thaw Subsidence CALM Observations
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CALM Sampling Strategy
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Active Layer Trends for Characteristic North Slope Landscapes
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North SlopeInterior
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Seasonal Progression of Thaw Depth
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Trends of Air and Ground Temperatures within Bioclimatic Zones
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The Length of Thawing Period at the Ground Surface within Bioclimatic Zones
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Detection of Frost Heave and Thaw Settlement within Representative Landscapes. Use of high-precision Differential Global Positioning System (DGPS) technology. Three primary locations representative of main physiographic provinces. Spatially-oriented observations at various characteristic landscapes. 36 observational points in each landscape unit. Observations were initiated in 2001 and were conducted twice a year (June and August).
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TRANSITION LAYER (TL) TL Transition Layer – boundary layer (0.1–2.0 m) between the active layer and permanently frozen part of permafrost. Shur Y.L., 1988
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Thaw Settlement within Representative Landscapes.
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R 2 =0.63 R 2 =0.91 ALT vs (ALT is as measured by metal probe) ALT vs (ALT is corrected for ground subsidence)
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Thank you
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