Subglacial bedforms of the last British Ice Sheet
TLDR
In this article, the authors presented the first consistent and countrywide map of subglacial bedforms for Britain produced from systematic mapping, where individual landforms were mapped from relief-shaded renditions of high-resolution elevation data and Landsat TM imagery.Abstract:
Please click here to download the map associated with this article. Subglacial bedforms are a characteristic feature of formerly glaciated landscapes. Formed parallel (e.g. drumlins) or transverse (ribbed moraine) to ice flow their preserved distribution is a valuable record of ice sheet configuration. To date these landforms have been underused in Britain such that we have only a simple static view of the flow patterns of the last British Ice Sheet, with glimpses of complexity recorded in just a few locations. Arguably, this is because of the lack of a suitable, ice-sheet scale, map of subglacial bedform distribution. We present the first consistent and countrywide map of subglacial bedforms for Britain produced from systematic mapping. Individual landforms were mapped from relief-shaded renditions of high-resolution elevation data and Landsat TM imagery. The outline or crest-line of each bedform was manually captured by onscreen digitisation directly into a Geographic Information System (GIS) d...read more
Citations
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Journal ArticleDOI
The last Eurasian ice sheets - a chronological database and time-slice reconstruction, DATED-1
TL;DR: In this paper, the authors present a new time-slice reconstruction of the Eurasian ice sheets (British-Irish, Svalbard-Barents-Kara Seas and Scandinavian) documenting the spatial evolution of these interconnected ice sheets every 1000 years from 25 to 10 years and at four selected time periods back to 40 years.
Journal ArticleDOI
Glacial geomorphological mapping: A review of approaches and frameworks for best practice
Benjamin M. P. Chandler,Harold Lovell,Clare M. Boston,Sven Lukas,Iestyn D. Barr,Ívar Örn Benediktsson,Douglas I. Benn,Chris D. Clark,Christopher M. Darvill,David J.A. Evans,Marek Ewertowski,David Loibl,Martin Margold,Jan-Christoph Otto,David H. Roberts,Chris R. Stokes,Robert D. Storrar,Arjen P. Stroeven +17 more
TL;DR: A review and assessment of the various glacial geomorphological methods and datasets currently available, with a focus on their applicability in particular glacial settings is provided in this article.
Journal ArticleDOI
BRITICE Glacial Map, version 2: a map and GIS database of glacial landforms of the last British-Irish Ice Sheet
Chris D. Clark,Jeremy C. Ely,Sarah L. Greenwood,Anna L.C. Hughes,Robert T. Meehan,Iestyn D. Barr,Mark D. Bateman,Tom Bradwell,Jenny Doole,David J.A. Evans,Colm Jordan,Xavier Monteys,Xavier M. Pellicer,Michael Sheehy +13 more
TL;DR: Clark et al. as discussed by the authors presented a wholesale revision of the evidence, onshore and offshore, to produce BRITICE version 2, which now also includes Ireland, up to the census date of December 2015.
Journal ArticleDOI
Flow-pattern evolution of the last British Ice Sheet
TL;DR: In this paper, a 10-stage reconstruction of the evolution in ice-flow patterns of the last British Ice Sheet from build-up to demise derived from geomorphological evidence is presented.
Journal ArticleDOI
Do subglacial bedforms comprise a size and shape continuum
Jeremy C. Ely,Chris D. Clark,Matteo Spagnolo,Chris R. Stokes,Sarah L. Greenwood,Anna L.C. Hughes,Paul Dunlop,Dale P. Hess +7 more
TL;DR: In this paper, the authors analyzed the largest data set of subglacial bedform size and shape measurements and found that flutes form a distinct population of narrow bedforms and a continuum of sub-glacial ribs also exists, with no clear size or shape distinctions indicating separate populations.
References
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Journal ArticleDOI
Late Wisconsinan and Holocene History of the Laurentide Ice Sheet
Arthur S. Dyke,V K Prest +1 more
TL;DR: The history of advance, retreat, and readvances of the Laurentide Ice Sheet along with associated changes in proglacial drainage and relative sea level oscillations for Late Wisconsinan and Holocene times is described in this paper.
Journal ArticleDOI
Fennoscandian palaeoglaciology reconstructed using a glacial geological inversion model
TL;DR: In this article, the evolution of ice-sheet configuration and flow pattern in Fennoscandia through the last glacial cycle was reconstructed using a glacial geological inversion model, i.e. a theoretical model that formalises the procedure of using the landform record to reconstruct ice sheets.
Journal ArticleDOI
Methods for the visualization of digital elevation models for landform mapping
Michael Smith,Chris D. Clark +1 more
TL;DR: A variety of techniques that can visualize a DEM are described and curvature visualization is recommended for initial mapping as this provides a non-illuminated (and therefore unbiased) image and no single visualization method provides complete and unbiased mapping.
Journal ArticleDOI
A highly mobile Laurentide ice sheet revealed by satellite images of glacial lineations
TL;DR: Satellite images of the North American continent reveal previously unrecognized patterns of crossing drift lineations reflecting unexpected shifts of centres of mass of the Laurentide ice sheet throughout the last glacial cycle.
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