00000nam 2200000za 4500 9.819860 CaOODSP 20251031142446 cr ||||||||||| 160622s2015 onc|||||o f|0| 0 eng d CaOODSP eng n-cn--- M183-2/7750E-PDF Oldenborger, G. A. (Greg A.) Electrical and electromagnetic data for permafrost characterization at Iqaluit International Airport, Nunavut [electronic resource] / [by] G.A. Oldenborger, A.-M. LeBlanc and W.E. Sladen. Ottawa : Natural Resources Canada, 2015. 41 p. : figures, tables, graphs. Open file (Geological Survey of Canada) ; 7750 Includes bibliographic references. Iqaluit International Airport presently suffers from instabilities and subsidence along its runway, taxiways and apron. These instabilities may be related to permafrost, permafrost degradation and associated drainage conditions. In particular, asphalt surfaces are significantly impacted by permafrost degradation, thaw settlement and frost cracking. As part of the Climate Change Geoscience Program, several types of geophysical data have been collected over and around airport infrastructure to characterize permafrost conditions and to investigate active permafrost processes. The geophysical surveys reveal anomalies related to multi-season displacement and groundwater influence. gccst Permafrost gccst Groundwater gccst Surficial geology gccst Geomorphology LeBlanc, A.-M. Sladen, W. E. Canada. Natural Resources Canada. Geological Survey of Canada. Open file (Geological Survey of Canada) 7750 (CaOODSP)9.506878 PDF 53.48 MB https://publications.gc.ca/collections/collection_2016/rncan-nrcan/M183-2-7750-eng.pdf