Engineering geological studies of Greenlandic permafrost areas

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Thomas Ingeman-Nielsen - Speaker

Greenland is very sparsely inhabited, with a population of only about 56.000. Nevertheless, over the past decades, the Greenlandic society has undergone rapid development. Airports have been constructed in all major towns, and presently several larger road construction projects are under planning, as mineral exploration, hydropower exploitation and growing tourism poses a demand for better infrastructure. The main concerns when constructing such structures in permafrost terrain are the presence of fine grained sediments, their ice contents and pore water chemistry, due to the impact on ground stability upon thawing. In this presentation we will discuss current knowledge about the distribution and properties of permafrost around mainly urban areas in South-Central West Greenland from Nuuk to Ilulissat. Results of engineering geological and technical investigations will be presented with a focus on applied geophysical methods, especially geoelectrical and georadar measurements, which have proven useful in mapping frozen ground and active layer thickness.
2 Apr 2008

Conference

TitleEngineering geological studies of Greenlandic permafrost areas
Date02/04/200802/04/2008
DescriptionGreenland is very sparsely inhabited, with a population of only about 56.000. Nevertheless, over the past decades, the Greenlandic society has undergone rapid development. Airports have been constructed in all major towns, and presently several larger road construction projects are under planning, as mineral exploration, hydropower exploitation and growing tourism poses a demand for better infrastructure. The main concerns when constructing such structures in permafrost terrain are the presence of fine grained sediments, their ice contents and pore water chemistry, due to the impact on ground stability upon thawing. In this presentation we will discuss current knowledge about the distribution and properties of permafrost around mainly urban areas in South-Central West Greenland from Nuuk to Ilulissat. Results of engineering geological and technical investigations will be presented with a focus on applied geophysical methods, especially geoelectrical and georadar measurements, which have proven useful in mapping frozen ground and active layer thickness.
CityInternational Arctic Research Center, University of Alaska Fairbanks
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ID: 131070798