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BRITICE Glacial Map, version 2: a map and GIS database of glacial landforms of the last British-Irish Ice Sheet
Stockholm University, Faculty of Science, Department of Geological Sciences.
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Number of Authors: 14
2018 (English)In: Boreas, ISSN 0300-9483, E-ISSN 1502-3885, Vol. 47, no 1, p. 11-27Article in journal (Refereed) Published
Abstract [en]

During the last glaciation, most of the British Isles and the surrounding continental shelf were covered by the British-Irish Ice Sheet (BIIS). An earlier compilation from the existing literature (BRITICE version 1) assembled the relevant glacial geomorphological evidence into a freely available GIS geodatabase and map (Clark etal. 2004: Boreas 33, 359). New high-resolution digital elevation models, of the land and seabed, have become available casting the glacial landform record of the British Isles in a new light and highlighting the shortcomings of the V.1 BRITICE compilation. Here we present a wholesale revision of the evidence, onshore and offshore, to produce BRITICE version 2, which now also includes Ireland. All published geomorphological evidence pertinent to the behaviour of the ice sheet is included, up to the census date of December 2015. The revised GIS database contains over 170000 geospatially referenced and attributed elements - an eightfold increase in information from the previous version. The compiled data include: drumlins, ribbed moraine, crag-and-tails, mega-scale glacial lineations, glacially streamlined bedrock (grooves, roches moutonnees, whalebacks), glacial erratics, eskers, meltwater channels (subglacial, lateral, proglacial and tunnel valleys), moraines, trimlines, cirques, trough-mouth fans and evidence defining ice-dammed lakes. The increased volume of features necessitates different map/database products with varying levels of data generalization, namely: (i) an unfiltered GIS database containing all mapping; (ii) a filtered GIS database, resolving data conflicts and with edits to improve geo-locational accuracy (available as GIS data and PDF maps); and (iii) a cartographically generalized map to provide an overview of the distribution and types of features at the ice-sheet scale that can be printed at A0 paper size at a 1:1250000 scale. All GIS data, the maps (as PDFs) and abibliography of all published sources are availablefor download from: https://www.sheffield.ac.uk/geography/staff/clark_chris/britice

Place, publisher, year, edition, pages
2018. Vol. 47, no 1, p. 11-27
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-152602DOI: 10.1111/bor.12273ISI: 000419039500002OAI: oai:DiVA.org:su-152602DiVA, id: diva2:1180427
Available from: 2018-02-05 Created: 2018-02-05 Last updated: 2018-02-05Bibliographically approved

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Greenwood, Sarah L.Jordan, Colm J.
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