| Titre | Landslide hazards and their mitigation along the Sea to Sky corridor, British Columbia |
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| Auteur | Blais-Stevens, A ;
Hungr, O |
| Source | 4th Annual Canadian Risk and Hazards Network Symposium: abstracts and biographical sketches; 2007 p. 11-12 |
| Liens | Online - En ligne (pages 11-12)
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| Image |  |
| Année | 2007 |
| Séries alt. | Secteur des sciences de la Terre, Contribution externe 20070063 |
| Réunion | 4th Annual Canadian Risk and Hazards Network Symposium; Vancouver, BC; CA; Novembre 6-8, 2007 |
| Document | livre |
| Lang. | anglais |
| Media | papier; en ligne; numérique |
| Formats | pdf (Adobe® Reader®) |
| Programme | Réduction des risques dus aux aléas naturels |
| Résumé | (disponible en anglais seulement)
The Sea to Sky Highway stretches 110 km from Horseshoe Bay to Pemberton, BC. Historically, the highway corridor has been vulnerable to landslides. More than 18%
of Canada’s total landslide related deaths (>600) have occurred along this corridor. Over the last 150 years, hundreds of landslide events have been reported. An inventory on landslides from newspaper articles, geotechnical reports, and scientific
articles has been compiled. The observed trend in landslide frequency has a peak period during the 1980's and 1990's at approximately 40 events per decade. The early part of the trend is heavily influenced by data censoring, due to an incomplete
record prior to the 1980's. In recent decades, the observed trend indicates the positive effects of landslide mitigation measures. This inventory depicts the geographical distribution, the types, and the impacts of landslides. The most abundant types
of landslides are debris flows and rock falls, which are highly concentrated in the southern part of the corridor. Certain individual landslide disasters led to implementation of mitigation measures. Active protection structures were built and road
safety measures were introduced. Moreover, systematic mitigation of rock falls and the adoption of the Rockfall Hazard Rating System were implemented by the B.C. Ministry of Transportation and Highways. Thus, evolving mitigative measures since the
1970's have increased the safety of the population. There have been no reported fatal accidents caused by landslides in the corridor since the early 1990's. More attention should be paid to the potential for highmagnitude low frequency landslide
hazards. |
| GEOSCAN ID | 223806 |
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