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Surface form of the south-western sector of the last Kara Sea Ice Sheet. / Tveranger, Jan; Astakhov, Valery; Mangerud, Jan; Svendsen, John Inge.

In: Boreas, Vol. 28, No. 1, 03.1999, p. 81-91.

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

Harvard

Tveranger, J, Astakhov, V, Mangerud, J & Svendsen, JI 1999, 'Surface form of the south-western sector of the last Kara Sea Ice Sheet', Boreas, vol. 28, no. 1, pp. 81-91. https://doi.org/10.1111/j.1502-3885.1999.tb00207.x

APA

Tveranger, J., Astakhov, V., Mangerud, J., & Svendsen, J. I. (1999). Surface form of the south-western sector of the last Kara Sea Ice Sheet. Boreas, 28(1), 81-91. https://doi.org/10.1111/j.1502-3885.1999.tb00207.x

Vancouver

Tveranger J, Astakhov V, Mangerud J, Svendsen JI. Surface form of the south-western sector of the last Kara Sea Ice Sheet. Boreas. 1999 Mar;28(1):81-91. https://doi.org/10.1111/j.1502-3885.1999.tb00207.x

Author

Tveranger, Jan ; Astakhov, Valery ; Mangerud, Jan ; Svendsen, John Inge. / Surface form of the south-western sector of the last Kara Sea Ice Sheet. In: Boreas. 1999 ; Vol. 28, No. 1. pp. 81-91.

BibTeX

@article{3c295f64c0e64518bd1a182bd0e34072,
title = "Surface form of the south-western sector of the last Kara Sea Ice Sheet",
abstract = "Recent results concerning the extent of the last Weichselian (Valdaian) Kara Sea Ice Sheet in the area around the Polar Urals and the north-eastern Russian Plain allow reconstruction of the surface form of this part of the ice sheet by using a combination of moraine-ridge elevation data and ice-flow indicators. The resulting reconstruction suggests a thin ice sheet with a pronounced lowering of surface gradient atthe transition from bedrock substrate around the Urals to a substrate consisting of unconsolidated sediments in the Pechora Basin. Comparison with similar reconstructions from along the southern and north-western parts of the Laurentide Ice Sheet margin, for which a deformable-bed model of glacier dynamics has been proposed, shows strong similarities in surface gradients and ice thicknesses as well in overall sedimentological and morphological characteristics of the associated basal till-deposits. This suggests comparable styles of glacier dynamics for the two ice sheets. If this first approximation of the Kara Sea Ice Sheet surface form is correct, it can be postulated that at least the south-western part of the ice sheet was much more mobile and dynamic than previously expected.",
author = "Jan Tveranger and Valery Astakhov and Jan Mangerud and Svendsen, {John Inge}",
year = "1999",
month = mar,
doi = "10.1111/j.1502-3885.1999.tb00207.x",
language = "English",
volume = "28",
pages = "81--91",
journal = "Boreas",
issn = "0300-9483",
publisher = "Wiley-Blackwell",
number = "1",

}

RIS

TY - JOUR

T1 - Surface form of the south-western sector of the last Kara Sea Ice Sheet

AU - Tveranger, Jan

AU - Astakhov, Valery

AU - Mangerud, Jan

AU - Svendsen, John Inge

PY - 1999/3

Y1 - 1999/3

N2 - Recent results concerning the extent of the last Weichselian (Valdaian) Kara Sea Ice Sheet in the area around the Polar Urals and the north-eastern Russian Plain allow reconstruction of the surface form of this part of the ice sheet by using a combination of moraine-ridge elevation data and ice-flow indicators. The resulting reconstruction suggests a thin ice sheet with a pronounced lowering of surface gradient atthe transition from bedrock substrate around the Urals to a substrate consisting of unconsolidated sediments in the Pechora Basin. Comparison with similar reconstructions from along the southern and north-western parts of the Laurentide Ice Sheet margin, for which a deformable-bed model of glacier dynamics has been proposed, shows strong similarities in surface gradients and ice thicknesses as well in overall sedimentological and morphological characteristics of the associated basal till-deposits. This suggests comparable styles of glacier dynamics for the two ice sheets. If this first approximation of the Kara Sea Ice Sheet surface form is correct, it can be postulated that at least the south-western part of the ice sheet was much more mobile and dynamic than previously expected.

AB - Recent results concerning the extent of the last Weichselian (Valdaian) Kara Sea Ice Sheet in the area around the Polar Urals and the north-eastern Russian Plain allow reconstruction of the surface form of this part of the ice sheet by using a combination of moraine-ridge elevation data and ice-flow indicators. The resulting reconstruction suggests a thin ice sheet with a pronounced lowering of surface gradient atthe transition from bedrock substrate around the Urals to a substrate consisting of unconsolidated sediments in the Pechora Basin. Comparison with similar reconstructions from along the southern and north-western parts of the Laurentide Ice Sheet margin, for which a deformable-bed model of glacier dynamics has been proposed, shows strong similarities in surface gradients and ice thicknesses as well in overall sedimentological and morphological characteristics of the associated basal till-deposits. This suggests comparable styles of glacier dynamics for the two ice sheets. If this first approximation of the Kara Sea Ice Sheet surface form is correct, it can be postulated that at least the south-western part of the ice sheet was much more mobile and dynamic than previously expected.

UR - http://www.scopus.com/inward/record.url?scp=0033102424&partnerID=8YFLogxK

U2 - 10.1111/j.1502-3885.1999.tb00207.x

DO - 10.1111/j.1502-3885.1999.tb00207.x

M3 - Article

AN - SCOPUS:0033102424

VL - 28

SP - 81

EP - 91

JO - Boreas

JF - Boreas

SN - 0300-9483

IS - 1

ER -

ID: 50792432