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dc.contributor.authorFors, Ane Schwenke
dc.contributor.authorBrekke, Camilla
dc.contributor.authorDoulgeris, Anthony Paul
dc.contributor.authorEltoft, Torbjørn
dc.contributor.authorRenner, Angelika
dc.contributor.authorGerland, Sebastian
dc.date.accessioned2016-03-30T08:44:44Z
dc.date.available2016-03-30T08:44:44Z
dc.date.issued2015-09-01
dc.description.abstractIn this study we investigate the potential of sea ice segmentation by C- and X-band multi-polarisation synthetic aperture radar (SAR) features during late summer. Five high-resolution satellite SAR scenes were recorded in the Fram Strait covering iceberg- fast first-year and old sea ice during a week with air temperatures varying around zero degrees Celsius. In situ data consisting of sea ice thickness, surface roughness and aerial photographs were collected during a helicopter flight at the site. Six polarimetric SAR features were extracted for each of the scenes. The ability of the individual SAR features to discriminate between sea ice types and their temporally consistency were examined. All SAR features were found to add value to sea ice type discrimination. Relative kurtosis, geometric brightness, cross-polarisation ratio and co-polarisation correlation angle were found to be temporally consistent in the investigated period, while co-polarisation ratio and co-polarisation correlation magnitude were found to be temporally inconsistent. An automatic feature-based segmentation algorithm was tested both for a full SAR feature set, and for a reduced SAR feature set limited to temporally consistent features. In general, the algorithm produces a good late summer sea ice segmentation. Excluding temporally inconsistent SAR features improved the segmentation at air temperatures above zero degrees Celsius.en_US
dc.descriptionPublished version. Source at <a href=http://doi.org/10.5194/tcd-9-4539-2015>http://doi.org/10.5194/tcd-9-4539-2015</a>.en_US
dc.identifier.citationThe Cryosphere Discussions 2015, 9:4539-4581en_US
dc.identifier.cristinIDFRIDAID 1321379
dc.identifier.doi10.5194/tcd-9-4539-2015
dc.identifier.issn1994-0440
dc.identifier.urihttps://hdl.handle.net/10037/9073
dc.identifier.urnURN:NBN:no-uit_munin_8638
dc.language.isoengen_US
dc.publisherThe European Geosciences Unionen_US
dc.rights.accessRightsopenAccess
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Fysikk: 430en_US
dc.titleLate summer sea ice segmentation with multi-polarisation SAR features in C- and X-banden_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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