| Title | Comparison of apparent conductivity to ground displacement and surficial geology for continuous permafrost |
| |
| Author | Oldenborger, G ;
Short, N; LeBlanc, A -M |
| Source | Near Surface Geoscience Conference & Exhibition 2018, abstract volume; 2018 p. 1-5, https://doi.org/10.3997/2214-4609.201802515 |
| Image |  |
| Year | 2018 |
| Alt Series | Natural Resources Canada, Contribution Series 20180011 |
| Publisher | EAGE Publications BV |
| Meeting | Near Surface Geoscience Conference & Exhibition 2018; Porto; PT; September 9-13, 2018 |
| Document | book |
| Lang. | English |
| Media | paper; digital |
| File format | pdf |
| Province | Nunavut |
| NTS | 55K/16SW |
| Area | Hudson Bay; Rankin Inlet |
| Lat/Long WENS | -92.4139 -92.3417 62.8722 62.8639 |
| Subjects | surficial geology/geomorphology; engineering geology; geophysics; environmental geology; Nature and Environment; permafrost; ground ice; geophysical surveys; electrical surveys; conductivity surveys;
displacement; radar methods; sediment stability; climate; raised beaches; marine sediments; glacial deposits; tills; moraines; permafrost thaw; Climate change; marine nearshore sediments; marine beach sediments; till blanket; moraine ridges; till
veneer |
| Illustrations | geoscientific sketch maps; plots |
| Program | Climate Change
Geoscience Permafrost |
| Program | Canada-Nunavut Geoscience Office, Funding Program
|
| Released | 2018 09 01 |
| Abstract | (Summary)
Information on thaw susceptibility is important for predicting the behaviour of permafrost as an engineering substrate. We compare apparent conductivity surveys to ground
displacement obtained from differential synthetic aperture radar and surficial geology, with the objective of improving the regional characterization of terrain stability and permafrost conditions along the western coast of Hudson Bay, Nunavut. For
certain field conditions, seasonal ground displacement, conductivity, and seasonal conductivity ratio are related to surficial geology, and there is a correspondence between high displacement, low conductivity, and high conductivity ratio, inferred
to be indicative of high ice content and thaw-related displacement. For other conditions, results suggest heterogeneity of permafrost conditions, thaw susceptibility and conductivity that are not easily understood in terms of surficial geology
alone. |
| Summary | (Plain Language Summary, not published)
Information on thaw susceptibility is important for predicting the behaviour of permafrost as an engineering substrate. We compare apparent conductivity
surveys to ground displacement obtained from differential synthetic aperture radar and surficial geology, with the objective of improving the regional characterization of permafrost conditions and terrain stability along the western coast of Hudson
Bay, Nunavut. For certain field conditions, seasonal ground displacement, conductivity, and conductivity ratio are related to surficial geology, and there is a correspondence between high displacement, low conductivity, and high conductivity ratio,
inferred to be indicative of high ice content and thaw-related displacement. For other conditions, the comparison of conductivity, displacement, and surficial geology is not easily understood, and suggests heterogeneity of permafrost conditions and
thaw susceptibility. |
| GEOSCAN ID | 308136 |
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