| Title | Retrogression characteristics of landslides in fine-grained permafrost soils, Mackenzie Valley, Canada |
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| Author | Wang, B; Paudel, B; Li, H |
| Source | Landslides vol. 6, no. 2, 2009 p. 121-127, https://doi.org/10.1007/s10346-009-0150-y |
| Image |  |
| Year | 2009 |
| Alt Series | Earth Sciences Sector, Contribution Series 20080095 |
| Publisher | Springer Nature |
| Document | serial |
| Lang. | English; English |
| Media | paper; on-line; digital |
| File format | pdf |
| Province | Northwest Territories |
| NTS | 106N; 106O; 107B; 107C |
| Area | Mackenzie Valley; Inuvik; Richards Island; Mackenzie River |
| Lat/Long WENS | -136.0000 -130.0000 69.7500 67.2500 |
| Subjects | engineering geology; surficial geology/geomorphology; landslides; landslide deposits; slope deposits; slope failures; slope stability; slope stability analyses; permafrost; freezing ground; temperature;
ground temperatures |
| Illustrations | location maps; tables; graphs; plots; photographs |
| Program | Secure Canadian Energy Supply |
| Released | 2009 04 23 |
| Abstract | Thirteen landslides (retrogressive thaw flows) were investigated to study the behavior of thaw retrogression in permafrost in the Mackenzie Valley, Northwest Territories (NWT), Canada. Those landslides
are all in fine-grained ice-rich permafrost soils. Such landslides usually start from small-scale slope failures followed by retrogressive thaw flows when ice-rich permafrost soils are exposed to the atmosphere. The landslides were marked with survey
stakes to measure their retreat rates for the thawing season of 2007. Two correlations are presented: one is between scarp wall height and retreat rate; another is between overall slope angle and retreat rate. It was found that thaw flow
retrogression rate increases with increase in scarp wall height and slope angle up to a certain limit. It was also confirmed that thaw flow retrogression is not influenced by slope orientation. |
| GEOSCAN ID | 225159 |
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