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Environmental and Engineering Geoscience; August 2004; v. 10; no. 3; p. 229-241; DOI: 10.2113/10.3.229
© 2004 Association of Engineering Geologists
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Methods for Remote Engineering Geology Terrain Analysis in Boreal Forest Regions of Ontario, Canada

PETER J. BARNETT1, VERNON H. SINGHROY2, JIRO SHIROTA3 and STEPHEN J. LENEY4

1 Ontario Geological Survey, Ministry of Northern Development and Mines, 933 Ramsey Lake Road, Sudbury, ON P3E 4V6
2 Canada Centre for Remote Sensing, Natural Resources Canada, 588 Booth Street, Ottawa, ON K1A 0Y7
3 Ontario Geological Survey, Ministry of Northern Development and Mines, 933 Ramsey Lake Road, Sudbury, ON P3E 4V6
4 Geomatic Service Centre, Ontario Ministry of Natural Resources, 300 Water Street, Peterborough, ON K9J8M5

The Ontario Geological Survey and Canada Centre for Remote Sensing have developed methods for engineering geology terrain analysis using digital elevation models (DEMs) and remotely sensed imagery for remote areas within the boreal forest region of the Canadian Shield. Traditional methods of terrain analysis would be expensive because of the limited access and the vast area involved. Four main components of the terrain are considered: material, landform, relief, and regional drainage conditions. Landform (roughness) and relief are derived automatically from an analysis of a detailed hydrological-conditioned DEM. Regional drainage conditions are estimated from RADARSAT imagery with a mask based on the use of aspect and slope to limit the effects of topography on backscatter. Various types of analysis of LANDSAT imagery are then combined with all the above digital data layers to interpret material type. An automated method that first determines the relationships of the various layers of digital information in areas of known terrain conditions and then predicts terrain conditions in adjacent unmapped areas, is discussed.

Key Words: Terrain Analysis • Spatial Data • Surficial Geology • Terrain Roughness • Relief • Geographic Information Systems (GIS)






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