Application of spatial prediction techniques to defining three-dimensional landslide shear surface geometry |
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Authors: | Katherine S Kalenchuk Douglas J Hutchinson Mark S Diederichs |
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Institution: | (1) Department of Geological Sciences and Geological Engineering, Queen’s University Kingston, Miller Hall, Ontario, K7L 3N6, Canada |
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Abstract: | This study explores the application of interpolating and non-interpolating spatial prediction algorithms to interpreting shear
surface geometries. A number of spatial prediction techniques have been tested, and the most appropriate algorithms for the
Downie Slide dataset have been selected based on the root mean squared error (RMSE) determined from cross-validation. Visual
assessment of reasonable spatial patterns has allowed for final selection of algorithms that produce geologically realistic
results. Through this process, the performance of a number of interpolation algorithms has been tested in terms of accuracy
and the development of reasonable spatial patterns. The goal of this study has been: (a) to develop a methodology for interpolating
three-dimensional shear surface geometries and (b) to assess which interpolation methods are most appropriate for the interpretation
of the Downie Slide basal slip surface geometry, based quantitatively on RMSE and qualitatively on the geological “trueness”
of the geometric output. |
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Keywords: | |
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