CGRG Bibliography of Canadian Geomorphology
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Author : Froese, C.R.; Keegan, T.; Cavers, D.S.; and van der Kooij, M.
Date : 2005.
Title : Detection and monitoring of complex landslides along the Ashcroft Rail corridor using spaceborne InSAR.
Publication : Landslide Risk Management: Proceedings of the International Conference on Landslide Risk Management, Vancouver. Edited by: Hungr, O.; Fell, R.; Couture, R.; and Eberhardt, E. Leiden: A.A. Balkema.
Issue :
Page(s) : 565-570.
Abstract
A portion of CN Rail's Ashcroft Subdivision located along the Thompson River in Central British Columbia, traverses an area of complex, slowly moving landslides on the rail line. The rates of movement of these large landslides are such that signs of active movement are often not perceptible to the eye and conventional monitoring with survey and slope inclinometers only provides point source data as to the rate and depth of movement at a specific location. This paper describes the application of Synthetic Aperture Ra-dar Interferometery (InSAR) to assess deformations for five different time frames between 1997 and 2004 in order to map the rates and extents of movement along a seven kilometre section of the railway. As the rates of movement are relatively slow and the ground is dry and has relatively little vegetation, the InSAR tech-nique was very successful in mapping the extents of movements over relatively large time periods that were being monitored by other means and in detecting the rates and extents of landslides where no quantitative movement data previously existed. This new data source will aid in the planning of further investigation and mitigative measures to aid CN in managing risks to their operations associated with landslide hazards
Bibliography of Canadian Geomorphology