(Table 1) Main morphological features of submarine landslides southwest of Storfjorden Fan (Lobe III), supplement to: Pedrosa, Mayte T; Camerlenghi, Angelo; De Mol, Ben; Urgeles, Roger; Rebesco, Michele; Lucchi, Renata G (2011): Seabed morphology and shallow sedimentary structure of the Storfjorden and Kveithola trough-mouth fans (North West Barents Sea). Marine Geology, 286(1-4), 65-81
This study aims to present an overview of the seafloor morphology and shallow sedimentary structure of the Storfjorden and Kveithola Trough Mouth Fans (TMFs) on the northwestern Barents Sea continental margin. Data have been compiled from two International Polar Year (IPY) cruises (SVAIS, of the BIO...
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Language: | English |
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PANGAEA - Data Publisher for Earth & Environmental Science
2011
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Online Access: | https://dx.doi.org/10.1594/pangaea.818201 https://doi.pangaea.de/10.1594/PANGAEA.818201 |
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ftdatacite:10.1594/pangaea.818201 |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
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ftdatacite |
language |
English |
topic |
Time coverage Name Depth, top/min Depth, bottom/max Profile/sampling length Depth comment Area Volume Multibeam Multibeam bathymetry Calculated IPY-4 International Polar Year 2007-2008 IPY |
spellingShingle |
Time coverage Name Depth, top/min Depth, bottom/max Profile/sampling length Depth comment Area Volume Multibeam Multibeam bathymetry Calculated IPY-4 International Polar Year 2007-2008 IPY Pedrosa, Mayte T Camerlenghi, Angelo De Mol, Ben Urgeles, Roger Rebesco, Michele Lucchi, Renata G (Table 1) Main morphological features of submarine landslides southwest of Storfjorden Fan (Lobe III), supplement to: Pedrosa, Mayte T; Camerlenghi, Angelo; De Mol, Ben; Urgeles, Roger; Rebesco, Michele; Lucchi, Renata G (2011): Seabed morphology and shallow sedimentary structure of the Storfjorden and Kveithola trough-mouth fans (North West Barents Sea). Marine Geology, 286(1-4), 65-81 |
topic_facet |
Time coverage Name Depth, top/min Depth, bottom/max Profile/sampling length Depth comment Area Volume Multibeam Multibeam bathymetry Calculated IPY-4 International Polar Year 2007-2008 IPY |
description |
This study aims to present an overview of the seafloor morphology and shallow sedimentary structure of the Storfjorden and Kveithola Trough Mouth Fans (TMFs) on the northwestern Barents Sea continental margin. Data have been compiled from two International Polar Year (IPY) cruises (SVAIS, of the BIO Hesperides and EGLACOM of the R/V OGS-Explora) that yielded 15,340 km**2 of multi-beam bathymetry and 9500 km of subbottom seismic profiles. In this area, the continental shelf edge defines three wide and subdued sedimentary lobes forming Storfjorden TMF, one single lobe on Kveithola TMF, and three inter-TMF areas on the continental slope. The two northernmost lobes of Storfjorden TMF (Lobes I and II) are composed by thick (up to 50 m) sequences of glacially derived debris flow deposits interbedded with thin a few metres de-glacial and interglacial deposits. A network of upper slope gullies incises these debris flow deposits as a consequence of subglacial meltwater release at or near the shelf break. Gullies evolve into channels whose morphologic evidence disappears midslope, leaving place to a subdued chevron-like morphological pattern inherited by the preceeding glacial maximum debris flow deposits. A drastic change occurs on the continental slope of Storfjorden TMF Lobe III and Kveithola TMF, where are several translational submarine landslides mostly originated in the upper slope, the majority of which detach at the contact between Middle Weishelian glacigenic debris flows and the overlying acoustically laminated plumites. Dendritic canyon systems only develop in inter-TMF areas. The data suggest that TMF continental slope progradation depends on short-lived episodes of extreme sedimentation during glacial maxima and during the early deglaciation phase, and that an important controlling factor is the mechanism of ice stream retreat from the continental shelf edge. We suggest that the two northern Storfjorden sub-ice streams were composed of thicker and perhaps faster ice progressively draining a distal and larger ice source mainly located on Svalbard. Conversely, the southernmost Storfjorden sub-ice stream and the Kveithola ice stream were fed by a local, smaller marine-based ice dome grounded on Spitsbergenbanken. The ice dome persisted after the LGM, maintaining a local ice drainage system close to the shelf edge whose sedimentary evidence can be found on the continental slope of the southern lobe of Storfjorden TMF and Kveithola TMF. The high degree of lateral variability in the style of sedimentation on TMF slopes suggests that ice stream dynamics may vary considerably within the same glacial trough, and that such variability affects the long-term development of the architecture of TMFs. : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 |
format |
Dataset |
author |
Pedrosa, Mayte T Camerlenghi, Angelo De Mol, Ben Urgeles, Roger Rebesco, Michele Lucchi, Renata G |
author_facet |
Pedrosa, Mayte T Camerlenghi, Angelo De Mol, Ben Urgeles, Roger Rebesco, Michele Lucchi, Renata G |
author_sort |
Pedrosa, Mayte T |
title |
(Table 1) Main morphological features of submarine landslides southwest of Storfjorden Fan (Lobe III), supplement to: Pedrosa, Mayte T; Camerlenghi, Angelo; De Mol, Ben; Urgeles, Roger; Rebesco, Michele; Lucchi, Renata G (2011): Seabed morphology and shallow sedimentary structure of the Storfjorden and Kveithola trough-mouth fans (North West Barents Sea). Marine Geology, 286(1-4), 65-81 |
title_short |
(Table 1) Main morphological features of submarine landslides southwest of Storfjorden Fan (Lobe III), supplement to: Pedrosa, Mayte T; Camerlenghi, Angelo; De Mol, Ben; Urgeles, Roger; Rebesco, Michele; Lucchi, Renata G (2011): Seabed morphology and shallow sedimentary structure of the Storfjorden and Kveithola trough-mouth fans (North West Barents Sea). Marine Geology, 286(1-4), 65-81 |
title_full |
(Table 1) Main morphological features of submarine landslides southwest of Storfjorden Fan (Lobe III), supplement to: Pedrosa, Mayte T; Camerlenghi, Angelo; De Mol, Ben; Urgeles, Roger; Rebesco, Michele; Lucchi, Renata G (2011): Seabed morphology and shallow sedimentary structure of the Storfjorden and Kveithola trough-mouth fans (North West Barents Sea). Marine Geology, 286(1-4), 65-81 |
title_fullStr |
(Table 1) Main morphological features of submarine landslides southwest of Storfjorden Fan (Lobe III), supplement to: Pedrosa, Mayte T; Camerlenghi, Angelo; De Mol, Ben; Urgeles, Roger; Rebesco, Michele; Lucchi, Renata G (2011): Seabed morphology and shallow sedimentary structure of the Storfjorden and Kveithola trough-mouth fans (North West Barents Sea). Marine Geology, 286(1-4), 65-81 |
title_full_unstemmed |
(Table 1) Main morphological features of submarine landslides southwest of Storfjorden Fan (Lobe III), supplement to: Pedrosa, Mayte T; Camerlenghi, Angelo; De Mol, Ben; Urgeles, Roger; Rebesco, Michele; Lucchi, Renata G (2011): Seabed morphology and shallow sedimentary structure of the Storfjorden and Kveithola trough-mouth fans (North West Barents Sea). Marine Geology, 286(1-4), 65-81 |
title_sort |
(table 1) main morphological features of submarine landslides southwest of storfjorden fan (lobe iii), supplement to: pedrosa, mayte t; camerlenghi, angelo; de mol, ben; urgeles, roger; rebesco, michele; lucchi, renata g (2011): seabed morphology and shallow sedimentary structure of the storfjorden and kveithola trough-mouth fans (north west barents sea). marine geology, 286(1-4), 65-81 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2011 |
url |
https://dx.doi.org/10.1594/pangaea.818201 https://doi.pangaea.de/10.1594/PANGAEA.818201 |
geographic |
Svalbard Barents Sea |
geographic_facet |
Svalbard Barents Sea |
genre |
Barents Sea International Polar Year IPY Spitsbergenbanken Storfjorden Svalbard |
genre_facet |
Barents Sea International Polar Year IPY Spitsbergenbanken Storfjorden Svalbard |
op_relation |
https://dx.doi.org/10.1016/j.margeo.2011.05.009 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.818201 https://doi.org/10.1016/j.margeo.2011.05.009 |
_version_ |
1766370483487375360 |
spelling |
ftdatacite:10.1594/pangaea.818201 2023-05-15T15:39:02+02:00 (Table 1) Main morphological features of submarine landslides southwest of Storfjorden Fan (Lobe III), supplement to: Pedrosa, Mayte T; Camerlenghi, Angelo; De Mol, Ben; Urgeles, Roger; Rebesco, Michele; Lucchi, Renata G (2011): Seabed morphology and shallow sedimentary structure of the Storfjorden and Kveithola trough-mouth fans (North West Barents Sea). Marine Geology, 286(1-4), 65-81 Pedrosa, Mayte T Camerlenghi, Angelo De Mol, Ben Urgeles, Roger Rebesco, Michele Lucchi, Renata G 2011 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.818201 https://doi.pangaea.de/10.1594/PANGAEA.818201 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/j.margeo.2011.05.009 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Time coverage Name Depth, top/min Depth, bottom/max Profile/sampling length Depth comment Area Volume Multibeam Multibeam bathymetry Calculated IPY-4 International Polar Year 2007-2008 IPY Supplementary Dataset dataset Dataset 2011 ftdatacite https://doi.org/10.1594/pangaea.818201 https://doi.org/10.1016/j.margeo.2011.05.009 2021-11-05T12:55:41Z This study aims to present an overview of the seafloor morphology and shallow sedimentary structure of the Storfjorden and Kveithola Trough Mouth Fans (TMFs) on the northwestern Barents Sea continental margin. Data have been compiled from two International Polar Year (IPY) cruises (SVAIS, of the BIO Hesperides and EGLACOM of the R/V OGS-Explora) that yielded 15,340 km**2 of multi-beam bathymetry and 9500 km of subbottom seismic profiles. In this area, the continental shelf edge defines three wide and subdued sedimentary lobes forming Storfjorden TMF, one single lobe on Kveithola TMF, and three inter-TMF areas on the continental slope. The two northernmost lobes of Storfjorden TMF (Lobes I and II) are composed by thick (up to 50 m) sequences of glacially derived debris flow deposits interbedded with thin a few metres de-glacial and interglacial deposits. A network of upper slope gullies incises these debris flow deposits as a consequence of subglacial meltwater release at or near the shelf break. Gullies evolve into channels whose morphologic evidence disappears midslope, leaving place to a subdued chevron-like morphological pattern inherited by the preceeding glacial maximum debris flow deposits. A drastic change occurs on the continental slope of Storfjorden TMF Lobe III and Kveithola TMF, where are several translational submarine landslides mostly originated in the upper slope, the majority of which detach at the contact between Middle Weishelian glacigenic debris flows and the overlying acoustically laminated plumites. Dendritic canyon systems only develop in inter-TMF areas. The data suggest that TMF continental slope progradation depends on short-lived episodes of extreme sedimentation during glacial maxima and during the early deglaciation phase, and that an important controlling factor is the mechanism of ice stream retreat from the continental shelf edge. We suggest that the two northern Storfjorden sub-ice streams were composed of thicker and perhaps faster ice progressively draining a distal and larger ice source mainly located on Svalbard. Conversely, the southernmost Storfjorden sub-ice stream and the Kveithola ice stream were fed by a local, smaller marine-based ice dome grounded on Spitsbergenbanken. The ice dome persisted after the LGM, maintaining a local ice drainage system close to the shelf edge whose sedimentary evidence can be found on the continental slope of the southern lobe of Storfjorden TMF and Kveithola TMF. The high degree of lateral variability in the style of sedimentation on TMF slopes suggests that ice stream dynamics may vary considerably within the same glacial trough, and that such variability affects the long-term development of the architecture of TMFs. : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 Dataset Barents Sea International Polar Year IPY Spitsbergenbanken Storfjorden Svalbard DataCite Metadata Store (German National Library of Science and Technology) Svalbard Barents Sea |