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Inferring ice-flow directions from single ice-sheet surface images using the Radon transform
journal contribution
posted on 2023-05-17, 16:29 authored by Jason RobertsJason Roberts, Roland WarnerRoland Warner, Adam TreverrowAdam TreverrowWe present a new method for extracting the direction of surface flow for ice sheets, based on the detection of flow-induced features that are visible in satellite imagery. The orientation of linear features is determined using a Radon transform and only requires a single image. The technique is demonstrated by applying it to the RADARSAT mosaic of Antarctica, over the Lambert Glacier–Amery Ice Shelf region of East Antarctica. Comparisons with both existing flow-direction fields and traced streamlines over the same area provide an evaluation of the method. We also illustrate its application to Landsat 7 imagery.
History
Publication title
Journal of GlaciologyVolume
59Issue
213Pagination
129-136ISSN
0022-1430Department/School
Institute for Marine and Antarctic StudiesPublisher
Int Glaciol SocPlace of publication
Lensfield Rd, Cambridge, England, Cb2 1ErRights statement
Copyright 2013 International Glaciological SocietyRepository Status
- Restricted