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dc.contributor.authorRouyet, Line
dc.contributor.authorLilleøren, Karianne Staalesen
dc.contributor.authorBöhme, Martina
dc.contributor.authorVick, Louise Mary
dc.contributor.authorDelaloye, Reynald
dc.contributor.authorEtzelmüller, Bernd
dc.contributor.authorLauknes, Tom Rune
dc.contributor.authorLarsen, Yngvar
dc.contributor.authorBlikra, Lars Harald
dc.date.accessioned2021-12-03T09:28:44Z
dc.date.available2021-12-03T09:28:44Z
dc.date.created2021-11-25T13:09:51Z
dc.date.issued2021
dc.identifier.issn2296-6463
dc.identifier.urihttps://hdl.handle.net/11250/2832700
dc.description.abstracthttps://www.frontiersin.org/articles/10.3389/feart.2021.681088en_US
dc.description.abstractMountain slopes in periglacial environments are affected by frost- and gravity-driven processes that shape the landscape. Both rock glaciers and rockslides have been intensively inventoried worldwide. Although most inventories are traditionally based on morphologic criteria, kinematic approaches based on satellite remote sensing have more recently been used to identify moving landforms at the regional scale. In this study, we developed simplified Interferometric Synthetic Aperture Radar (InSAR) products to inventory ground velocity in a region in Northern Norway covering approximately 7,500 km2. We used a multiple temporal baseline InSAR stacking procedure based on 2015–2019 ascending and descending Sentinel-1 images to take advantage of a large set of interferograms and exploit different detection capabilities. First, moving areas are classified according to six velocity brackets, and morphologically associated to six landform types (rock glaciers, rockslides, glaciers/moraines, talus/scree deposits, solifluction/cryoturbation and composite landforms). The kinematic inventory shows that the velocity ranges and spatial distribution of the different types of slope processes vary greatly within the study area. Second, we exploit InSAR to update pre-existing inventories of rock glaciers and rockslides in the region. Landform delineations and divisions are refined, and newly detected landforms (54 rock glaciers and 20 rockslides) are incorporated into the databases. The updated inventories consist of 414 rock glacier units within 340 single- or multi-unit(s) systems and 117 rockslides. A kinematic attribute assigned to each inventoried landform documents the order of magnitude of the creep rate. Finally, we show that topo-climatic variables influence the spatial distribution of the rock glaciers. Their mean elevation increases toward the continental interior with a dominance of relict landforms close to the land-sea margin and an increased occurrence of active landforms further inland. Both rock glaciers and rockslides are mostly located on west-facing slopes and in areas characterised by strongly foliated rocks, which suggests the influence of geological preconditioning factors. The study demonstrates the value of semi-quantitative InSAR products to characterise kinematic information at large scale and exploit the results for periglacial research. It highlights the complementarity of both kinematic and morphologic approaches for inventorying slope processes.en_US
dc.language.isoengen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleRegional Morpho-Kinematic Inventory of Slope Movements in Northern Norwayen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1
dc.identifier.doi10.3389/feart.2021.681088
dc.identifier.cristin1959017
dc.source.journalFrontiers in Earth Scienceen_US
dc.source.volume9en_US
dc.relation.projectNorges forskningsråd: 212022en_US
dc.relation.projectESA - den europeiske romfartsorganisasjonen: 4000123681/18/I-NBen_US
dc.relation.projectESA - den europeiske romfartsorganisasjonen: 4000106830en_US
dc.relation.projectNorges forskningsråd: 263005en_US
dc.relation.projectESA - den europeiske romfartsorganisasjonen: 4000119115en_US


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