Seafloor craters and mounds in the central Barents Sea
Multiple giant craters and mounds have been identified in the area of the Upper Bjørnøyrenna in the central Barents Sea from the reflection seismic and echo sounder data. Analysis of seismic and echo sounder data revealed clear connection between these distinct seafloor features and seismic amplitud...
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UiT The Arctic University of Norway
2016
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ftunivtroemsoe:oai:munin.uit.no:10037/11089 2023-05-15T15:38:28+02:00 Seafloor craters and mounds in the central Barents Sea Isaksen, Nataliia 2016-05-31 https://hdl.handle.net/10037/11089 eng eng UiT The Arctic University of Norway UiT Norges arktiske universitet https://hdl.handle.net/10037/11089 openAccess Copyright 2016 The Author(s) VDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466 gas leakage gas hydrate the central Barents Sea the Bjørnøyrenna Late Weichselian Maximum collapsed gas hydrate pingoes collapsed depressions giant craters VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Sedimentologi: 456 EOM-3901 Master thesis Mastergradsoppgave 2016 ftunivtroemsoe 2021-06-25T17:55:17Z Multiple giant craters and mounds have been identified in the area of the Upper Bjørnøyrenna in the central Barents Sea from the reflection seismic and echo sounder data. Analysis of seismic and echo sounder data revealed clear connection between these distinct seafloor features and seismic amplitude anomalies. Distribution pattern of the numerous water column anomalies registered in the area and interpreted to be gas plumes, corresponds to the location of faults in the study area what suggest that gas is of thermogenic origin and is migrating from the deeper reservoir through porous layers and faults working as vertical conduits. Suggested that craters and mounds are collapsed depressions and collapsed gas hydrate pingoes and their formation is associated with the processes of formation and decomposition of shallow gas hydrates due to the last glaciation period in the area, the Late Weichselian Maximum. Master Thesis Barents Sea University of Tromsø: Munin Open Research Archive Barents Sea |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466 gas leakage gas hydrate the central Barents Sea the Bjørnøyrenna Late Weichselian Maximum collapsed gas hydrate pingoes collapsed depressions giant craters VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Sedimentologi: 456 EOM-3901 |
spellingShingle |
VDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466 gas leakage gas hydrate the central Barents Sea the Bjørnøyrenna Late Weichselian Maximum collapsed gas hydrate pingoes collapsed depressions giant craters VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Sedimentologi: 456 EOM-3901 Isaksen, Nataliia Seafloor craters and mounds in the central Barents Sea |
topic_facet |
VDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466 gas leakage gas hydrate the central Barents Sea the Bjørnøyrenna Late Weichselian Maximum collapsed gas hydrate pingoes collapsed depressions giant craters VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Sedimentologi: 456 EOM-3901 |
description |
Multiple giant craters and mounds have been identified in the area of the Upper Bjørnøyrenna in the central Barents Sea from the reflection seismic and echo sounder data. Analysis of seismic and echo sounder data revealed clear connection between these distinct seafloor features and seismic amplitude anomalies. Distribution pattern of the numerous water column anomalies registered in the area and interpreted to be gas plumes, corresponds to the location of faults in the study area what suggest that gas is of thermogenic origin and is migrating from the deeper reservoir through porous layers and faults working as vertical conduits. Suggested that craters and mounds are collapsed depressions and collapsed gas hydrate pingoes and their formation is associated with the processes of formation and decomposition of shallow gas hydrates due to the last glaciation period in the area, the Late Weichselian Maximum. |
format |
Master Thesis |
author |
Isaksen, Nataliia |
author_facet |
Isaksen, Nataliia |
author_sort |
Isaksen, Nataliia |
title |
Seafloor craters and mounds in the central Barents Sea |
title_short |
Seafloor craters and mounds in the central Barents Sea |
title_full |
Seafloor craters and mounds in the central Barents Sea |
title_fullStr |
Seafloor craters and mounds in the central Barents Sea |
title_full_unstemmed |
Seafloor craters and mounds in the central Barents Sea |
title_sort |
seafloor craters and mounds in the central barents sea |
publisher |
UiT The Arctic University of Norway |
publishDate |
2016 |
url |
https://hdl.handle.net/10037/11089 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea |
genre_facet |
Barents Sea |
op_relation |
https://hdl.handle.net/10037/11089 |
op_rights |
openAccess Copyright 2016 The Author(s) |
_version_ |
1766369425593729024 |