Submarine landforms characteristic of glacier surges in two Spitsbergen fjords
Well-preserved submarine landforms, all less than 100 years old, are imaged on high-resolution swath bathymetry obtained from Van Keulenfjorden and Rindersbukta (inner Van Mijenfjorden), Spitsbergen, Svalbard. Several tidewater glaciers in these fjords have Surged in the last few hundred years. Stre...
Published in: | Quaternary Science Reviews |
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Main Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2008
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Online Access: | https://research-portal.st-andrews.ac.uk/en/researchoutput/submarine-landforms-characteristic-of-glacier-surges-in-two-spitsbergen-fjords(276e00d7-e45c-447a-9b7f-87dd50c8f79d).html https://doi.org/10.1016/j.quascirev.2008.05.007 |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/276e00d7-e45c-447a-9b7f-87dd50c8f79d 2024-06-23T07:53:04+00:00 Submarine landforms characteristic of glacier surges in two Spitsbergen fjords Ottesen, D. Dowdeswell, J. A. Benn, D. I. Kristensen, L. Christiansen, H. H. Christensen, O. Hansen, L. Lebesbye, E. Forwick, M. Vorren, T. O. 2008-08 https://research-portal.st-andrews.ac.uk/en/researchoutput/submarine-landforms-characteristic-of-glacier-surges-in-two-spitsbergen-fjords(276e00d7-e45c-447a-9b7f-87dd50c8f79d).html https://doi.org/10.1016/j.quascirev.2008.05.007 eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/submarine-landforms-characteristic-of-glacier-surges-in-two-spitsbergen-fjords(276e00d7-e45c-447a-9b7f-87dd50c8f79d).html info:eu-repo/semantics/restrictedAccess Ottesen , D , Dowdeswell , J A , Benn , D I , Kristensen , L , Christiansen , H H , Christensen , O , Hansen , L , Lebesbye , E , Forwick , M & Vorren , T O 2008 , ' Submarine landforms characteristic of glacier surges in two Spitsbergen fjords ' , Quaternary Science Reviews , vol. 27 , no. 15-16 , pp. 1583-1599 . https://doi.org/10.1016/j.quascirev.2008.05.007 SEA-FLOOR MORPHOLOGY MASS-BALANCE STRUCTURAL EVOLUTION TIDEWATER GLACIER SURGING GLACIER PUSH MORAINES SVALBARD DYNAMICS VELOCITY FINSTERWALDERBREEN article 2008 ftunstandrewcris https://doi.org/10.1016/j.quascirev.2008.05.007 2024-06-13T00:29:21Z Well-preserved submarine landforms, all less than 100 years old, are imaged on high-resolution swath bathymetry obtained from Van Keulenfjorden and Rindersbukta (inner Van Mijenfjorden), Spitsbergen, Svalbard. Several tidewater glaciers in these fjords have Surged in the last few hundred years. Streamlined landforms, found within the limits of known surges, are interpreted as mega-scale glacial lineations (MSGL) formed subglacially beneath actively surging ice. Large transverse ridges are terminal moraines formed by thrusting at the maximum position of glacier surges. Sediment lobes at the distal margins of terminal moraines are interpreted as glacigenic debris flows, formed either by failure of the frontal slopes of thrust moraines or from deforming sediment extruded from beneath the glacier. Sinuous ridges are eskers, formed after surge termination by the sedimentary infilling of subglacial conduits. Concordant ridges, parallel to former ice margins, are interpreted as minor push moraines, probably formed annually during winter glacier readvance. Discordant ridges, oblique to former ice margins, are interpreted as crevasse-squeeze ridges, forming when soft subglacial sediments are injected into basal crevasses. These submarine landforms have been deposited in the following sequence based on cross-cutting relationships between them, linked to stages of the Surge cycle: (I) MSGL; (2a) terminal moraines and (2b) lobe-shaped debris flows; (3) isolated areas of crevasse-fill ridges; (4) eskers and (5) annual retreat ridges. A descriptive landsystem model for tidewater surge-type glaciers has been developed, whose wider applicability is emphasised by comparison with two areas in Isfjorden, Spitsbergen. The model also has a number of features in common with landsystem models for terrestrial surge-type glaciers, but is likely to be more complete since submarine landforms are particularly well preserved. The landforms discussed here may be produced and preserved in different proportions in the varied environmental ... Article in Journal/Newspaper glacier Isfjord* Isfjord* Isfjorden Isfjorden Svalbard Tidewater Van Keulenfjorden Van Mijenfjorden Spitsbergen University of St Andrews: Research Portal Finsterwalderbreen ENVELOPE(15.273,15.273,77.489,77.489) Rindersbukta ENVELOPE(16.868,16.868,77.817,77.817) Svalbard Van Keulenfjorden ENVELOPE(15.489,15.489,77.559,77.559) Van Mijenfjorden ENVELOPE(14.667,14.667,77.717,77.717) Quaternary Science Reviews 27 15-16 1583 1599 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
SEA-FLOOR MORPHOLOGY MASS-BALANCE STRUCTURAL EVOLUTION TIDEWATER GLACIER SURGING GLACIER PUSH MORAINES SVALBARD DYNAMICS VELOCITY FINSTERWALDERBREEN |
spellingShingle |
SEA-FLOOR MORPHOLOGY MASS-BALANCE STRUCTURAL EVOLUTION TIDEWATER GLACIER SURGING GLACIER PUSH MORAINES SVALBARD DYNAMICS VELOCITY FINSTERWALDERBREEN Ottesen, D. Dowdeswell, J. A. Benn, D. I. Kristensen, L. Christiansen, H. H. Christensen, O. Hansen, L. Lebesbye, E. Forwick, M. Vorren, T. O. Submarine landforms characteristic of glacier surges in two Spitsbergen fjords |
topic_facet |
SEA-FLOOR MORPHOLOGY MASS-BALANCE STRUCTURAL EVOLUTION TIDEWATER GLACIER SURGING GLACIER PUSH MORAINES SVALBARD DYNAMICS VELOCITY FINSTERWALDERBREEN |
description |
Well-preserved submarine landforms, all less than 100 years old, are imaged on high-resolution swath bathymetry obtained from Van Keulenfjorden and Rindersbukta (inner Van Mijenfjorden), Spitsbergen, Svalbard. Several tidewater glaciers in these fjords have Surged in the last few hundred years. Streamlined landforms, found within the limits of known surges, are interpreted as mega-scale glacial lineations (MSGL) formed subglacially beneath actively surging ice. Large transverse ridges are terminal moraines formed by thrusting at the maximum position of glacier surges. Sediment lobes at the distal margins of terminal moraines are interpreted as glacigenic debris flows, formed either by failure of the frontal slopes of thrust moraines or from deforming sediment extruded from beneath the glacier. Sinuous ridges are eskers, formed after surge termination by the sedimentary infilling of subglacial conduits. Concordant ridges, parallel to former ice margins, are interpreted as minor push moraines, probably formed annually during winter glacier readvance. Discordant ridges, oblique to former ice margins, are interpreted as crevasse-squeeze ridges, forming when soft subglacial sediments are injected into basal crevasses. These submarine landforms have been deposited in the following sequence based on cross-cutting relationships between them, linked to stages of the Surge cycle: (I) MSGL; (2a) terminal moraines and (2b) lobe-shaped debris flows; (3) isolated areas of crevasse-fill ridges; (4) eskers and (5) annual retreat ridges. A descriptive landsystem model for tidewater surge-type glaciers has been developed, whose wider applicability is emphasised by comparison with two areas in Isfjorden, Spitsbergen. The model also has a number of features in common with landsystem models for terrestrial surge-type glaciers, but is likely to be more complete since submarine landforms are particularly well preserved. The landforms discussed here may be produced and preserved in different proportions in the varied environmental ... |
format |
Article in Journal/Newspaper |
author |
Ottesen, D. Dowdeswell, J. A. Benn, D. I. Kristensen, L. Christiansen, H. H. Christensen, O. Hansen, L. Lebesbye, E. Forwick, M. Vorren, T. O. |
author_facet |
Ottesen, D. Dowdeswell, J. A. Benn, D. I. Kristensen, L. Christiansen, H. H. Christensen, O. Hansen, L. Lebesbye, E. Forwick, M. Vorren, T. O. |
author_sort |
Ottesen, D. |
title |
Submarine landforms characteristic of glacier surges in two Spitsbergen fjords |
title_short |
Submarine landforms characteristic of glacier surges in two Spitsbergen fjords |
title_full |
Submarine landforms characteristic of glacier surges in two Spitsbergen fjords |
title_fullStr |
Submarine landforms characteristic of glacier surges in two Spitsbergen fjords |
title_full_unstemmed |
Submarine landforms characteristic of glacier surges in two Spitsbergen fjords |
title_sort |
submarine landforms characteristic of glacier surges in two spitsbergen fjords |
publishDate |
2008 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/submarine-landforms-characteristic-of-glacier-surges-in-two-spitsbergen-fjords(276e00d7-e45c-447a-9b7f-87dd50c8f79d).html https://doi.org/10.1016/j.quascirev.2008.05.007 |
long_lat |
ENVELOPE(15.273,15.273,77.489,77.489) ENVELOPE(16.868,16.868,77.817,77.817) ENVELOPE(15.489,15.489,77.559,77.559) ENVELOPE(14.667,14.667,77.717,77.717) |
geographic |
Finsterwalderbreen Rindersbukta Svalbard Van Keulenfjorden Van Mijenfjorden |
geographic_facet |
Finsterwalderbreen Rindersbukta Svalbard Van Keulenfjorden Van Mijenfjorden |
genre |
glacier Isfjord* Isfjord* Isfjorden Isfjorden Svalbard Tidewater Van Keulenfjorden Van Mijenfjorden Spitsbergen |
genre_facet |
glacier Isfjord* Isfjord* Isfjorden Isfjorden Svalbard Tidewater Van Keulenfjorden Van Mijenfjorden Spitsbergen |
op_source |
Ottesen , D , Dowdeswell , J A , Benn , D I , Kristensen , L , Christiansen , H H , Christensen , O , Hansen , L , Lebesbye , E , Forwick , M & Vorren , T O 2008 , ' Submarine landforms characteristic of glacier surges in two Spitsbergen fjords ' , Quaternary Science Reviews , vol. 27 , no. 15-16 , pp. 1583-1599 . https://doi.org/10.1016/j.quascirev.2008.05.007 |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/submarine-landforms-characteristic-of-glacier-surges-in-two-spitsbergen-fjords(276e00d7-e45c-447a-9b7f-87dd50c8f79d).html |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2008.05.007 |
container_title |
Quaternary Science Reviews |
container_volume |
27 |
container_issue |
15-16 |
container_start_page |
1583 |
op_container_end_page |
1599 |
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1802644556811862016 |