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Folders: ROOT > ScienceBase Catalog > National and Regional Climate Adaptation Science Centers > Alaska CASC > FY 2014 Projects > Assessing Permafrost Changes and Related Impacts on Alaskan Infrastructure and Communities > Approved Products ( Show all descendants )

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_ScienceBase Catalog
__National and Regional Climate Adaptation Science Centers
___Alaska CASC
____FY 2014 Projects
_____Assessing Permafrost Changes and Related Impacts on Alaskan Infrastructure and Communities
______Approved Products
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Abstract (from ScienceDirect): Ice wedge polygons on the North Slope of Alaska have been forming for many millennia, when the ground thermally contracts in the winter and water fills in the cracks during the snowmelt season. The infiltrated water then freezes and turns into ice. In this paper we investigate temperature dynamics around the ice wedges and surrounding permafrost. A 2-D nonlinear heat equation with phase change is utilized to compute temperature across the ice wedge and surrounding area. Thermal properties of the ground material are estimated by assimilating temperature measurements in the center of ice wedge polygons. The developed finite element model is successfully validated using two analytical...