Moraine development at a small High‐Arctic valley glacier: Rieperbreen, Svalbard
Abstract Ice‐cored lateral and frontal moraine complexes, formed at the margin of the small, land‐based Rieperbreen glacier, central Svalbard, have been investigated through field observations and interpretations of aerial photographs (1936, 1961 and 1990). The main focus has been on the stratigraph...
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crwiley:10.1002/jqs.613 2024-09-15T18:07:55+00:00 Moraine development at a small High‐Arctic valley glacier: Rieperbreen, Svalbard Lyså, Astrid Lønne, Ida Research Council of Norway Roald Amundsens Minnefond Norwegian Polar Institute Center for Kvinneforskning og kvinner i forskning (University of Tromsø) Geological Survey of Norway 2001 http://dx.doi.org/10.1002/jqs.613 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.613 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.613 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 16, issue 6, page 519-529 ISSN 0267-8179 1099-1417 journal-article 2001 crwiley https://doi.org/10.1002/jqs.613 2024-07-25T04:22:01Z Abstract Ice‐cored lateral and frontal moraine complexes, formed at the margin of the small, land‐based Rieperbreen glacier, central Svalbard, have been investigated through field observations and interpretations of aerial photographs (1936, 1961 and 1990). The main focus has been on the stratigraphical and dynamic development of these moraines as well as the disintegration processes. The glacier has been wasting down since the ‘Little Ice Age’ (LIA) maximum, and between 1936 and 1990 the glacier surface was lowered by 50–60 m and the front retreated by approximately 900 m. As the glacier wasted, three moraine ridges developed at the front, mainly as melting out of sediments from debris‐rich foliation and debris‐bands formed when the glacier was polythermal, probably during the LIA maximum. The disintegration of the moraines is dominated by wastage of buried ice, sediment gravity‐flows, meltwater activity and some frost weathering. A transverse glacier profile with a northward sloping surface has developed owing to the higher insolation along the south‐facing ice margin. This asymmetric geometry also strongly affects the supraglacial drainage pattern. Lateral moraines have formed along both sides of the glacier, although the insolation aspect of the glacier has resulted in the development of a moraine 60 m high along its northern margin. Copyright © 2001 John Wiley & Sons, Ltd. Article in Journal/Newspaper glacier Svalbard Wiley Online Library Journal of Quaternary Science 16 6 519 529 |
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Wiley Online Library |
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English |
description |
Abstract Ice‐cored lateral and frontal moraine complexes, formed at the margin of the small, land‐based Rieperbreen glacier, central Svalbard, have been investigated through field observations and interpretations of aerial photographs (1936, 1961 and 1990). The main focus has been on the stratigraphical and dynamic development of these moraines as well as the disintegration processes. The glacier has been wasting down since the ‘Little Ice Age’ (LIA) maximum, and between 1936 and 1990 the glacier surface was lowered by 50–60 m and the front retreated by approximately 900 m. As the glacier wasted, three moraine ridges developed at the front, mainly as melting out of sediments from debris‐rich foliation and debris‐bands formed when the glacier was polythermal, probably during the LIA maximum. The disintegration of the moraines is dominated by wastage of buried ice, sediment gravity‐flows, meltwater activity and some frost weathering. A transverse glacier profile with a northward sloping surface has developed owing to the higher insolation along the south‐facing ice margin. This asymmetric geometry also strongly affects the supraglacial drainage pattern. Lateral moraines have formed along both sides of the glacier, although the insolation aspect of the glacier has resulted in the development of a moraine 60 m high along its northern margin. Copyright © 2001 John Wiley & Sons, Ltd. |
author2 |
Research Council of Norway Roald Amundsens Minnefond Norwegian Polar Institute Center for Kvinneforskning og kvinner i forskning (University of Tromsø) Geological Survey of Norway |
format |
Article in Journal/Newspaper |
author |
Lyså, Astrid Lønne, Ida |
spellingShingle |
Lyså, Astrid Lønne, Ida Moraine development at a small High‐Arctic valley glacier: Rieperbreen, Svalbard |
author_facet |
Lyså, Astrid Lønne, Ida |
author_sort |
Lyså, Astrid |
title |
Moraine development at a small High‐Arctic valley glacier: Rieperbreen, Svalbard |
title_short |
Moraine development at a small High‐Arctic valley glacier: Rieperbreen, Svalbard |
title_full |
Moraine development at a small High‐Arctic valley glacier: Rieperbreen, Svalbard |
title_fullStr |
Moraine development at a small High‐Arctic valley glacier: Rieperbreen, Svalbard |
title_full_unstemmed |
Moraine development at a small High‐Arctic valley glacier: Rieperbreen, Svalbard |
title_sort |
moraine development at a small high‐arctic valley glacier: rieperbreen, svalbard |
publisher |
Wiley |
publishDate |
2001 |
url |
http://dx.doi.org/10.1002/jqs.613 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.613 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.613 |
genre |
glacier Svalbard |
genre_facet |
glacier Svalbard |
op_source |
Journal of Quaternary Science volume 16, issue 6, page 519-529 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.613 |
container_title |
Journal of Quaternary Science |
container_volume |
16 |
container_issue |
6 |
container_start_page |
519 |
op_container_end_page |
529 |
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1810445279925633024 |