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Dr Mike J Smith
Kingston University
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Mapping glacial lineaments from satellite imagery: an assessment of the problems and development of best procedure.
M.J. Smith, C.D. Clark and S.M. Wise
Slovak Geological Magazine, 7, 263-274
Remotely sensed images are important tools in the mapping of glacial landforms and reconstruction of past glacial environments. However the quality of imagery can be highly variable, introducing random and selective bias into any landforms mapped from them. In this paper we illustrate the three main sources of bias and go onto provide a descriptive and analytical assessment of these bias. With a primary focus on visual and near infra-red sensors, we also illustrate the utility in using radar imagery, particularly as a supplemental data source. We conclude that low solar elevation is an important requirement, whilst an awareness of the selective bias introduced by solar azimuth is necessary. Landsat ETM+ imagery meets the requirements for glacial landform mapping and is our recommended data source.
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