Permafrost in Marine Deposits at Ilulissat Airport in Greenland, Revisited

Publication: Research - peer-reviewArticle in proceedings – Annual report year: 2008

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Ilulissat Airport was constructed in 1982 to 1984 after detailed geotechnical investigations as the construction site included up to 12 m thick basins of marine clay deposits. Despite soil temperatures of approx -3oC the soil appeared unfrozen from 4 to 5 m below ground surface due to a high residual salt content in the porewater. However, in the less saline top zone massive ice layers was found constituting up to 30 volume%. These formations representing a type example of saline permafrost caused the planned position of the runway to be shifted towards northwest and a removal of the layers and substitution with compacted blasted rock fill. However, a test fill of 2.5 m of rock fill and coarse gravel was constructed in the abandoned area in order to establish experiences for future constructions. Background and previous findings will be covered and present activities are topics in a companying paper.
Original languageEnglish
Title of host publicationProceedings of the Ninth International Conference on Permafrost
Number of pages1054
Volume1
Place of publicationFairbanks
PublisherInstitute of Northern Engineering, University of Alaska Fairbanks
Publication date2008
Pages445-450
ISBN (print)978-0-9800179-2-2
StatePublished

Conference

Conference9th International Conference on Permafrost
Number9
CountryUnited States
CityFairbanks, AK
Period29/06/0803/07/08
Internet addresshttp://www.nicop.org/

Keywords

  • airport, construction, embankment, freezing point depression, saline permafrost, test fill
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