The last Welsh Ice Cap: Part 2 - Dynamics of a topographically controlled icecap

Henry Patton; Alun Hubbard; Neil F. Glasser; Tom Bradwell; Nicholas R. Golledge

doi:10.1111/j.1502-3885.2012.00301.x

The last Welsh Ice Cap: Part 2 - Dynamics of a topographically controlled icecap

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The last Welsh Ice Cap: Part 2 - Dynamics of a topographically controlled icecap. / Patton, Henry; Hubbard, Alun; Glasser, Neil F. et al.

In: Boreas, Vol. 42, No. 3, 07.2013, p. 491-510.

Research output: Contribution to journal › Article › peer-review

Harvard

Patton, H, Hubbard, A, Glasser, NF, Bradwell, T & Golledge, NR 2013, 'The last Welsh Ice Cap: Part 2 - Dynamics of a topographically controlled icecap', Boreas, vol. 42, no. 3, pp. 491-510. https://doi.org/10.1111/j.1502-3885.2012.00301.x

APA

Patton, H., Hubbard, A., Glasser, N. F., Bradwell, T., & Golledge, N. R. (2013). The last Welsh Ice Cap: Part 2 - Dynamics of a topographically controlled icecap. Boreas, 42(3), 491-510. https://doi.org/10.1111/j.1502-3885.2012.00301.x

Vancouver

Patton H, Hubbard A, Glasser NF, Bradwell T, Golledge NR. The last Welsh Ice Cap: Part 2 - Dynamics of a topographically controlled icecap. Boreas. 2013 Jul;42(3):491-510. Epub 2012 Nov 19. doi: 10.1111/j.1502-3885.2012.00301.x

Author

Patton, Henry ; Hubbard, Alun ; Glasser, Neil F. et al. / The last Welsh Ice Cap: Part 2 - Dynamics of a topographically controlled icecap. In: Boreas. 2013 ; Vol. 42, No. 3. pp. 491-510.

Bibtex - Download

@article{5279e670f25a40abbd73cdafa47b0405,

title = "The last Welsh Ice Cap: Part 2 - Dynamics of a topographically controlled icecap",

abstract = "During the Last Glacial Maximum, the British-Irish Ice Sheet was dominated by a number of accumulation centres, including a terrestrially based, semi-independent icecap centred on Wales. The dynamics of this Welsh Ice Cap (WIC) over the last glacial period are still relatively poorly understood, with few studies taking into consideration the dynamic evolution of the icecap as a whole. Here we contrast results from two modelled reconstructions of the WIC in conjunction with the wider glacial geomorphological record to elucidate understanding of its form, extent and dynamics. Model output was analysed to yield zones of high basal motion and the spatial distribution of potential glacial erosion. We conclude that coherent flowsets of streamlined bedforms are linked to fast-flowing outlets dominated by basal sliding. Large-scale changes in dynamics are discussed, with a number of possible major advances proposed over the glacial cycle. Maximum ice thicknesses of approximate to 1200m in Mid Wales indicate that all mountain summits were probably ice-covered during the Last Glacial Maximum, even if it was with a thin protective mantle of cold-based ice, leading to landscape preservation of these upland zones. The distribution, dynamism and landscape modification related to the WIC are further discussed at the regional scale. Model predictions of glacier distribution through the Younger Dryas stadial accord well with geologically reconstructed limits at this time.",

keywords = "PERIPHERAL MOUNTAIN-RANGES, BRECON-BEACONS, YOUNGER DRYAS, SOUTH-WALES, NORTH WALES, IRISH SEA, WEST ANTARCTICA, GLACIAL MAXIMUM, STREAM-B, LANDSCAPE EVOLUTION",

author = "Henry Patton and Alun Hubbard and Glasser, {Neil F.} and Tom Bradwell and Golledge, {Nicholas R.}",

note = "Patton, H., Hubbard, A., Glasser, N. F., Bradwell, T., Golledge, N. R. (2013). The last Welsh Ice Cap: Part 2 - Dynamics of a topographically controlled icecap. Boreas, 42 (3), 491-510",

year = "2013",

month = jul,

doi = "10.1111/j.1502-3885.2012.00301.x",

language = "English",

volume = "42",

pages = "491--510",

journal = "Boreas",

issn = "0300-9483",

publisher = "Wiley",

number = "3",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - The last Welsh Ice Cap: Part 2 - Dynamics of a topographically controlled icecap

AU - Patton, Henry

AU - Hubbard, Alun

AU - Glasser, Neil F.

AU - Bradwell, Tom

AU - Golledge, Nicholas R.

N1 - Patton, H., Hubbard, A., Glasser, N. F., Bradwell, T., Golledge, N. R. (2013). The last Welsh Ice Cap: Part 2 - Dynamics of a topographically controlled icecap. Boreas, 42 (3), 491-510

PY - 2013/7

Y1 - 2013/7

N2 - During the Last Glacial Maximum, the British-Irish Ice Sheet was dominated by a number of accumulation centres, including a terrestrially based, semi-independent icecap centred on Wales. The dynamics of this Welsh Ice Cap (WIC) over the last glacial period are still relatively poorly understood, with few studies taking into consideration the dynamic evolution of the icecap as a whole. Here we contrast results from two modelled reconstructions of the WIC in conjunction with the wider glacial geomorphological record to elucidate understanding of its form, extent and dynamics. Model output was analysed to yield zones of high basal motion and the spatial distribution of potential glacial erosion. We conclude that coherent flowsets of streamlined bedforms are linked to fast-flowing outlets dominated by basal sliding. Large-scale changes in dynamics are discussed, with a number of possible major advances proposed over the glacial cycle. Maximum ice thicknesses of approximate to 1200m in Mid Wales indicate that all mountain summits were probably ice-covered during the Last Glacial Maximum, even if it was with a thin protective mantle of cold-based ice, leading to landscape preservation of these upland zones. The distribution, dynamism and landscape modification related to the WIC are further discussed at the regional scale. Model predictions of glacier distribution through the Younger Dryas stadial accord well with geologically reconstructed limits at this time.

AB - During the Last Glacial Maximum, the British-Irish Ice Sheet was dominated by a number of accumulation centres, including a terrestrially based, semi-independent icecap centred on Wales. The dynamics of this Welsh Ice Cap (WIC) over the last glacial period are still relatively poorly understood, with few studies taking into consideration the dynamic evolution of the icecap as a whole. Here we contrast results from two modelled reconstructions of the WIC in conjunction with the wider glacial geomorphological record to elucidate understanding of its form, extent and dynamics. Model output was analysed to yield zones of high basal motion and the spatial distribution of potential glacial erosion. We conclude that coherent flowsets of streamlined bedforms are linked to fast-flowing outlets dominated by basal sliding. Large-scale changes in dynamics are discussed, with a number of possible major advances proposed over the glacial cycle. Maximum ice thicknesses of approximate to 1200m in Mid Wales indicate that all mountain summits were probably ice-covered during the Last Glacial Maximum, even if it was with a thin protective mantle of cold-based ice, leading to landscape preservation of these upland zones. The distribution, dynamism and landscape modification related to the WIC are further discussed at the regional scale. Model predictions of glacier distribution through the Younger Dryas stadial accord well with geologically reconstructed limits at this time.

KW - PERIPHERAL MOUNTAIN-RANGES

KW - BRECON-BEACONS

KW - YOUNGER DRYAS

KW - SOUTH-WALES

KW - NORTH WALES

KW - IRISH SEA

KW - WEST ANTARCTICA

KW - GLACIAL MAXIMUM

KW - STREAM-B

KW - LANDSCAPE EVOLUTION

UR - http://hdl.handle.net/2160/13436

U2 - 10.1111/j.1502-3885.2012.00301.x