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A proxy for snow cover and winter ground surface cooling: mapping Usnea sp. communities using high resolution remote sensing imagery (Maritime Antarctica)

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dc.contributor.authorVieira, Goncalo
dc.contributor.authorMora, Carla
dc.contributor.authorPina, Pedro
dc.contributor.authorSchaefer, Carlos E.R.
dc.date.accessioned2017-07-12T11:34:58Z
dc.date.available2017-07-12T11:34:58Z
dc.date.issued2014
dc.description.abstractUsnea sp. formations show a spatial distribution coinciding with wind-exposed locations on rock knobs or sedimentary bodies, while they are commonly absent from concave sites. Field collection of georeferenced ground truthing data in the Meseta Norte (Fildes Peninsula, Maritime Antarctica) and the application of supervised classification techniques over a summer high resolution QuickBird satellite scene showed excellent classification accuracy for the different landcover types. The results show that Usnea formation distribution maps are a viable proxy for areas with less snow during the cold season. Such an approach provides input for permafrost and active layer modelling since snow acts as a critical control on ground surface heat balance. Since snow mapping is extremely difficult in Maritime Antarctica our tested approach provides important added-value for empirical–statistical modelling of permafrost distribution.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationVieira, Goncalo, Mora, Carla, Pina, Pedro & Schaefer, Carlos E.R. (2014). A proxy for snow cover and winter ground surface cooling: mapping Usnea sp. communities using high resolution remote sensing imagery (Maritime Antarctica). Geomorphology, 225, 69-75. https://doi.org/10.1016/j.geomorph.2014.03.049. ISSN: 0169-555X
dc.identifier.doi10.1016/j.geomorph.2014.03.049pt_PT
dc.identifier.issn0169-555X
dc.identifier.issn1872-695X
dc.identifier.urihttp://hdl.handle.net/10451/28320
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.subjectPermafrostpt_PT
dc.subjectBioindicatorspt_PT
dc.subjectSnow coverpt_PT
dc.subjectGround surface coolingpt_PT
dc.subjectFildes Peninsulapt_PT
dc.subjectAntarcticapt_PT
dc.titleA proxy for snow cover and winter ground surface cooling: mapping Usnea sp. communities using high resolution remote sensing imagery (Maritime Antarctica)pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage75pt_PT
oaire.citation.startPage69pt_PT
oaire.citation.titleGeomorphologypt_PT
oaire.citation.volume225pt_PT
person.familyNameBrito Guapo Teles Vieira
person.familyNameMora
person.givenNameGonçalo
person.givenNameCarla
person.identifierG-5958-2010
person.identifier.ciencia-id2519-6583-CAEA
person.identifier.ciencia-id0612-E2F4-590C
person.identifier.orcid0000-0001-7611-3464
person.identifier.orcid0000-0002-0843-3658
person.identifier.ridD-2706-2012
person.identifier.scopus-author-id7005863976
person.identifier.scopus-author-id7102104610
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication7039fbb2-e1f8-4c3e-80f1-603b12d33c1c
relation.isAuthorOfPublication03524498-91a6-492e-97a2-6dbf2dd567bc
relation.isAuthorOfPublication.latestForDiscovery7039fbb2-e1f8-4c3e-80f1-603b12d33c1c

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