General Information
Abstract: With increasing development of resources and transportation systems in areas of permafrost in Canada, the need for efficient and effective landslide hazard assessment in northern regions is greater now than ever. Furthermore, most climatological models suggest an accelerating warming trend for the region, along with more extreme climatic events, which would lead to increased landslide frequency. This project was undertaken to identify and characterize landslide processes in an area of discontinuous permafrost and to develop methods of landslide susceptibility mapping.
The landslide inventory completed for the Little Salmon Lake (Central Yukon) study area shows 82 landslides. The majority of the landslides are inactive. The Little Salmon Lake Landslide is a large rock slide that has been in motion for decades, but with the most significant movement occurring in the last 8 years. The Magundy River Landslide, a bi-modal flow first observed in 1996, now covers nearly 550 000 m2. The YT Slide, a large complex slump in surficial sediments, has been undergoing slow deformation for decades but has greatly accelerated in recent years, especially in the summer of 2004.
Based on the landslide inventory and characterization of landslide processes in the area, landslide susceptibility mapping was completed. Two general methods were utilized: geomorphic interpretative methods and the combination of subjectively-rated thematic maps. The completed susceptibility maps provide insight into the areas where future landslides, at least those similar to those characterized in the area, will occur. The research shows that a significant part of the project area is susceptible to skin flow-type landslides, while smaller areas are susceptible to bi-modal flow and complex slump activity. Interpretative susceptibility areas for the other landslide types were also determined.
A copy of this thesis is available at the EMR library – QE599.Y8 L9 2006.
The landslide inventory completed for the Little Salmon Lake (Central Yukon) study area shows 82 landslides. The majority of the landslides are inactive. The Little Salmon Lake Landslide is a large rock slide that has been in motion for decades, but with the most significant movement occurring in the last 8 years. The Magundy River Landslide, a bi-modal flow first observed in 1996, now covers nearly 550 000 m2. The YT Slide, a large complex slump in surficial sediments, has been undergoing slow deformation for decades but has greatly accelerated in recent years, especially in the summer of 2004.
Based on the landslide inventory and characterization of landslide processes in the area, landslide susceptibility mapping was completed. Two general methods were utilized: geomorphic interpretative methods and the combination of subjectively-rated thematic maps. The completed susceptibility maps provide insight into the areas where future landslides, at least those similar to those characterized in the area, will occur. The research shows that a significant part of the project area is susceptible to skin flow-type landslides, while smaller areas are susceptible to bi-modal flow and complex slump activity. Interpretative susceptibility areas for the other landslide types were also determined.
A copy of this thesis is available at the EMR library – QE599.Y8 L9 2006.
Authors: Lyle, R.R.
Map Scale: 1 : 0
Citation: Lyle, R.R., 2006. Landslide susceptibility mapping in discontinuous permafrost: Little Salmon Lake, central Yukon. Unpublished MSc Thesis, Queen's University, Kingston, Ontario, 351 p.
Location Map
Related Occurrences
| Name | Number | Type | Status |
|---|
Related Compilations
| Compilation Name | Feature Type | Update Frequency |
|---|
Related Publications
| Number | Relationship | Authors | Title |
|---|
