Inferring ice-flow directions from single ice-sheet surface images using the Radon transform
We present a new method for extracting the direction of surface flow for ice sheets, based onthe detection of flow-induced features that are visible in satellite imagery. The orientation of linearfeatures is determined using a Radon transform and only requires a single image. The technique isdemonst...
Published in: | Journal of Glaciology |
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Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Int Glaciol Soc
2013
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Subjects: | |
Online Access: | https://doi.org/10.3189/2013JoG12J042 http://ecite.utas.edu.au/83215 |
Summary: | We present a new method for extracting the direction of surface flow for ice sheets, based onthe detection of flow-induced features that are visible in satellite imagery. The orientation of linearfeatures is determined using a Radon transform and only requires a single image. The technique isdemonstrated by applying it to the RADARSAT mosaic of Antarctica, over the Lambert GlacierAmery IceShelf region of East Antarctica. Comparisons with both existing flow-direction fields and tracedstreamlines over the same area provide an evaluation of the method. We also illustrate its application toLandsat 7 imagery. |
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