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- Info
Geographic information systems and remote sensing techniques in environmental assessment
| Author: |
Kenny, Frank M. |
| Date: |
1996 |
| Periodical: |
Geoscience Canada |
| Abstract: |
Digital map products and spatial inventories are becoming increasingly available from geological surveys, agricultural, natural resource, environmental, energy, transportation and forestry departments. As well there are now multitudes of specialized digital airborne and satellite image products available. This wide availability of geographically referenced data and the advances in spatial data analysis software are providing geoscientists with new tools and new ways of viewing traditionally used data. Through several examples, this paper will demonstrate how remote sensing and GIS technologies can contribute to environmental assessment of an urban fringe area. Nowhere is the need for spatial inventories and mapping greater than in such areas, where pre-existing information becomes rapidly outdated. A 260-km2 site, north of Metropolitan Toronto was chosen as a study area A spatial data base was constructed which included imagery from three different satellite sensors, a Digital Terrain Model (DTM), a digital drainage network, and a digital copy of the Ontario Geological Survey's Quaternary geological map. |
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