Periglacial landforms of Dartmoor: an automated mapping approach to characterizing cold climate geomorphology.
A systematic mapping approach characterizes Dartmoor periglacial landform signatures using the geomorphology of nine summit areas displaying well developed tor and blockfield landforms. This combines manual vectorisation with automatic classification and surface boulder identification, using spectra...
| Publicado en: | Scottish Geographical Journal Vol. 138; no. 1/2; pp. 45 - 73 |
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| Autores principales: | , |
| Formato: | Artículo |
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Taylor & Francis Ltd
Mar/Jun2022
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=160327695&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 160327695 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 14702541 8NB jtl: Scottish Geographical Journal issn: 14702541 maglogo: N pubinfo: dt: Mar/Jun2022 vid: 138 iid: 1/2 pid: 377 pub: Taylor & Francis Ltd artinfo: ui: 160327695 10.1080/14702541.2022.2093394 ppf: 45 ppct: 28 formats: fmt: – @attributes: type: T – @attributes: type: P size: 8.2MB tig: atl: Periglacial landforms of Dartmoor: an automated mapping approach to characterizing cold climate geomorphology. aug: au: Harriott, Sadie Evans, David J. A. affil: Department of Geography, Durham University, Durham, UK su: Landforms Geomorphology Periglacial processes Solifluction Automatic classification Uplands Boulders sug: subj: Landforms Geomorphology Periglacial processes Solifluction Automatic classification Uplands Boulders keyword: Automated mapping Dartmoor periglacial landsystem ab: A systematic mapping approach characterizes Dartmoor periglacial landform signatures using the geomorphology of nine summit areas displaying well developed tor and blockfield landforms. This combines manual vectorisation with automatic classification and surface boulder identification, using spectral signatures to reveal patterns and distribution. Tors were classified using a three-fold scheme: T0 - summits with no tors; T1 - summits with castellated and high relief tors; T2 - summits with subdued or low relief tors. Clitter (blockfield and blockstream) features identified by automated mapping include boulder lobes and stripes and boulder-fronted lobes and terraces, arranged according to distance downslope from parent tors. This zonation of periglacial landforms is proposed as a landsystem signature for areas exposed to periglacial and permafrost processes for significant time during the Quaternary. It represents a process-form regime in which cold climate processes, acting on partially deeply weathered and pneumatolysised granite, produce castellated tors, cryoplanation benches and autochthonous blockfield (clitter), and permafrost creep develops boulder lobes that elongate and evolve downslope as allochthonous blockslopes with boulder stripes and boulder-fronted lobes and terraces. This demonstrates that automated mapping can be applied to areas of upland periglacial landforms to rapidly and systematically compile quantifiable patterns of landform assemblages. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y custom: Copyright of Scottish Geographical Journal is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. item: Scottish Geographical Journal holder: Taylor & Francis Ltd dt: @attributes: year: 2022 holdings: @attributes: islocal: N |
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