Caslys Consulting Victoria BC
Caslys Consulting Remote Sensing

Projects > Vancouver Island Change Detection Mapping

Over the winter season of 2006 to 2007 an unusual number of major storms hit the west coast of Canada. The large amounts of precipitation, in combination with high winds, were major factors in an increase in landslide and blowdown events. In order to understand the extent and increase of the damage compared to previous seasons, multi-temporal mapping was conducted to facilitate a comparison between two prior winter seasons - imagery from 2004 and 2006 was compared to estimate trends from the two years prior to the 2006-2007 winter season. The mapping identified new landslides and blowdown areas for each time period. In addition, forest harvest cut blocks and new road construction occurring in each of the time periods was mapped and quantified. The imagery used for the project consisted of multi-spectral SPOT collected for three points in time: 2004, 2006; and 2007.

landslide damage
change stack image
identification of landslides
mapping blowdown events
mapping timber harvest
landslide density vancouver island
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