An experimental approach to submarine canyon evolution

We present results from a sandbox experiment designed to investigate how sediment gravity flows form and shape submarine canyons. In the experiment, unconfined saline gravity flows were released onto an inclined sand bed bounded on the downstream end by a movable floor that was used to increase reli...

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Detalhes bibliográficos
Autores: Lai, Steven Y.J., Gerber, Thomas P., Amblàs i Novellas, David
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2016
País:España
Recursos:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/163500
Acesso em linha:https://hdl.handle.net/2445/163500
Access Level:acceso abierto
Palavra-chave:Geologia submarina
Sediments marins
Submarine geology
Marine sediments
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spelling An experimental approach to submarine canyon evolutionLai, Steven Y.J.Gerber, Thomas P.Amblàs i Novellas, DavidGeologia submarinaSediments marinsSubmarine geologyMarine sedimentsWe present results from a sandbox experiment designed to investigate how sediment gravity flows form and shape submarine canyons. In the experiment, unconfined saline gravity flows were released onto an inclined sand bed bounded on the downstream end by a movable floor that was used to increase relief during the experiment. In areas unaffected by the flows, we observed featureless, angle-of-repose submarine slopes formed by retrogressive breaching processes. In contrast, areas influenced by gravity flows cascading across the shelf break were deeply incised by submarine canyons with well-developed channel networks. Normalized canyon long profiles extracted from successive high-resolution digital elevation models collapse to a single profile when referenced to the migrating shelf-slope break, indicating self-similar growth in the relief defined by the canyon and intercanyon profiles. Although our experimental approach is simple, the resulting canyon morphology and behavior appear similar in several important respects to that observed in the field.American Geophysical Union (AGU)2016info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/163500Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.1002/2015GL067376Geophysical Research Letters, 2016, vol. 43, num. 6, p. 2741-2747https://doi.org/10.1002/2015GL067376(c) American Geophysical Union (AGU), 2016info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1635002026-05-27T06:46:51Z
dc.title.none.fl_str_mv An experimental approach to submarine canyon evolution
title An experimental approach to submarine canyon evolution
spellingShingle An experimental approach to submarine canyon evolution
Lai, Steven Y.J.
Geologia submarina
Sediments marins
Submarine geology
Marine sediments
title_short An experimental approach to submarine canyon evolution
title_full An experimental approach to submarine canyon evolution
title_fullStr An experimental approach to submarine canyon evolution
title_full_unstemmed An experimental approach to submarine canyon evolution
title_sort An experimental approach to submarine canyon evolution
dc.creator.none.fl_str_mv Lai, Steven Y.J.
Gerber, Thomas P.
Amblàs i Novellas, David
author Lai, Steven Y.J.
author_facet Lai, Steven Y.J.
Gerber, Thomas P.
Amblàs i Novellas, David
author_role author
author2 Gerber, Thomas P.
Amblàs i Novellas, David
author2_role author
author
dc.subject.none.fl_str_mv Geologia submarina
Sediments marins
Submarine geology
Marine sediments
topic Geologia submarina
Sediments marins
Submarine geology
Marine sediments
description We present results from a sandbox experiment designed to investigate how sediment gravity flows form and shape submarine canyons. In the experiment, unconfined saline gravity flows were released onto an inclined sand bed bounded on the downstream end by a movable floor that was used to increase relief during the experiment. In areas unaffected by the flows, we observed featureless, angle-of-repose submarine slopes formed by retrogressive breaching processes. In contrast, areas influenced by gravity flows cascading across the shelf break were deeply incised by submarine canyons with well-developed channel networks. Normalized canyon long profiles extracted from successive high-resolution digital elevation models collapse to a single profile when referenced to the migrating shelf-slope break, indicating self-similar growth in the relief defined by the canyon and intercanyon profiles. Although our experimental approach is simple, the resulting canyon morphology and behavior appear similar in several important respects to that observed in the field.
publishDate 2016
dc.date.none.fl_str_mv 2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/163500
url https://hdl.handle.net/2445/163500
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1002/2015GL067376
Geophysical Research Letters, 2016, vol. 43, num. 6, p. 2741-2747
https://doi.org/10.1002/2015GL067376
dc.rights.none.fl_str_mv (c) American Geophysical Union (AGU), 2016
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Geophysical Union (AGU), 2016
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Geophysical Union (AGU)
publisher.none.fl_str_mv American Geophysical Union (AGU)
dc.source.none.fl_str_mv Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301629

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