Surficial geology and landslide inventory in Douglas Channel fjord, northwest BC

A. Blais-Stevens

In the proceedings of: GeoVancouver 2016: 69th Canadian Geotechnical Conference

Session: GEOHAZARDS - IV Earthquakes and Tsunamis

ABSTRACT: Douglas Channel is a 100-km long fjord located in northwest British Columbia with the town of Kitimat and Kitimaat Geoscience Program, provides baseline geoscience information to help inform stakeholders and decision-makers. The main objective is to map the surficial geology and occurrence of landslides along the bordering slopes of the fjord. The mapping to identify the types of landslides and substrate on which they were triggered was carried out mainly by stereoscopic interpretation of medium-scale aerial photographs, augmented with some pre-existing field observations. LiDAR surveys also helped fine-tune interpretation in some of the areas. In addition, terrain stability assessment using the standardized method developed for the BC forest industry was carried out. This baseline geoscience information is the first step in developing landslide susceptibility modelling for the fjord.

RÉSUMÉ: Le chenal marin de Douglas est un fjord de 100 km de long situé au nord-ouest de la Colombie-Britannique reliant la ville de Kitimat et le village de Kitimaat . La Commission géologique du Canada, dans le cadre du programme Géoscience pour la sécurité publique de Ressources naturelles Canada, fournit des renseignements ence des glissements de terrain le long des versants limitrophes du fjord. La cartographie pour identifier les types de glissements de terrain et le substrat sur lequel ils ont été déclenchés a été réalisée principalement par interprétation stéréoscopique de photographies aériennes, complétée par quelques observations sur le terrain préexistantes. Des levés LiDAR ont aussi . En outre, évaluation de la Colombie-Britannique a été réalisée. Cette information géoscientifique de base est la première étape dans le développement de modèles de susceptibilité aux glissements de terrain pour le fjord.

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Cite this article:
A. Blais-Stevens (2016) Surficial geology and landslide inventory in Douglas Channel fjord, northwest BC in GEO2016. Ottawa, Ontario: Canadian Geotechnical Society.

@article{4081_0527112530,author = A. Blais-Stevens,title = Surficial geology and landslide inventory in Douglas Channel fjord, northwest BC,year = 2016}