Near-bottom horizontal transfer of particulate matter in the Palamós Submarine Canyon (NW Mediterranean)

Near-bottom horizontal transfer of particulate matter in the Palamós Submarine Canyon (NW Mediterranean)

26 pages, 14 figures

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Bibliographic Details
Main Authors: Martín, Jacobo, Palanques, Albert, Puig, Pere
Format: artículo biblioteca
Language:English
Published: Yale University 2007-03
Subjects:Particulate flux, Continental margins, Ocean circulation, Submarine canyon, Northwestern Mediterranean, Palamós Canyon, 41-42ºN, 3-4ºE,
Online Access:http://hdl.handle.net/10261/26517
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spelling dig-icm-es-10261-265172019-03-06T13:55:37Z Near-bottom horizontal transfer of particulate matter in the Palamós Submarine Canyon (NW Mediterranean) Martín, Jacobo Palanques, Albert Puig, Pere Particulate flux Continental margins Ocean circulation Submarine canyon Northwestern Mediterranean Palamós Canyon 41-42ºN, 3-4ºE 26 pages, 14 figures From March to November 2001, six current meters equipped with turbidimeters were moored 12 meters above the bottom inside the Palamós submarine canyon and on the adjacent slope. Horizontal particle fluxes were calculated from current and suspended sediment concentration data. This work aims to evaluate the advective sediment fluxes taking place in the Palamós canyon region, and to discern the nature and time-scales of the processes involved in the across-margin transfer of particles over the study period. Near-bottom currents inside the canyon were constrained by the local topography and displayed a high spatio-temporal variability. The net near-bottom transport of suspended matter in the canyon was largely driven by sharp increases of sediment load and current speed, most of them attributed to sediment gravity flows. These energetic events dominated over the current-driven sediment transport, which was relatively weak due to periodical up-canyon/downcanyon inversions along the canyon axis, and to complex current patterns and the presence of low sediment loads for most of the time at the other sites. During this 8-month experiment, the mid-canyon (>1200 m depth) acted as a by-pass zone, while at the canyon head, net sediment transport was directed persistently up-canyon. These patterns were further heightened during a major storm in November 2001. However, in this particular submarine canyon, substantial sedimentary activity and offshore export of particulate matter also occur in the absence of significant external forcings (storms, river floods). Human activities (deep trawling) induced sediment gravity flows during the dry and calm season (spring-summer) and enhanced the offshore transfer of particles during this time period This work was carried out in the framework of the CANYONS project funded by the Spanish National R+D Plan. The first author was funded during this study by an FPI fellowship from the Spanish Ministry of Science and Technology (MCYT) Peer reviewed 2010-07-23T09:13:33Z 2010-07-23T09:13:33Z 2007-03 artículo http://purl.org/coar/resource_type/c_6501 Journal of Marine Research 65(2): 193-218 (2007) 0022-2402 http://hdl.handle.net/10261/26517 10.1357/002224007780882569 1543-9542 en https://doi.org/10.1357/002224007780882569 open 5867 bytes application/pdf Yale University Sears Foundation for Marine Research
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
language English
topic Particulate flux
Continental margins
Ocean circulation
Submarine canyon
Northwestern Mediterranean
Palamós Canyon
41-42ºN, 3-4ºE
Particulate flux
Continental margins
Ocean circulation
Submarine canyon
Northwestern Mediterranean
Palamós Canyon
41-42ºN, 3-4ºE
spellingShingle Particulate flux
Continental margins
Ocean circulation
Submarine canyon
Northwestern Mediterranean
Palamós Canyon
41-42ºN, 3-4ºE
Particulate flux
Continental margins
Ocean circulation
Submarine canyon
Northwestern Mediterranean
Palamós Canyon
41-42ºN, 3-4ºE
Martín, Jacobo
Palanques, Albert
Puig, Pere
Near-bottom horizontal transfer of particulate matter in the Palamós Submarine Canyon (NW Mediterranean)
description 26 pages, 14 figures
format artículo
topic_facet Particulate flux
Continental margins
Ocean circulation
Submarine canyon
Northwestern Mediterranean
Palamós Canyon
41-42ºN, 3-4ºE
author Martín, Jacobo
Palanques, Albert
Puig, Pere
author_facet Martín, Jacobo
Palanques, Albert
Puig, Pere
author_sort Martín, Jacobo
title Near-bottom horizontal transfer of particulate matter in the Palamós Submarine Canyon (NW Mediterranean)
title_short Near-bottom horizontal transfer of particulate matter in the Palamós Submarine Canyon (NW Mediterranean)
title_full Near-bottom horizontal transfer of particulate matter in the Palamós Submarine Canyon (NW Mediterranean)
title_fullStr Near-bottom horizontal transfer of particulate matter in the Palamós Submarine Canyon (NW Mediterranean)
title_full_unstemmed Near-bottom horizontal transfer of particulate matter in the Palamós Submarine Canyon (NW Mediterranean)
title_sort near-bottom horizontal transfer of particulate matter in the palamós submarine canyon (nw mediterranean)
publisher Yale University
publishDate 2007-03
url http://hdl.handle.net/10261/26517
work_keys_str_mv AT martinjacobo nearbottomhorizontaltransferofparticulatematterinthepalamossubmarinecanyonnwmediterranean
AT palanquesalbert nearbottomhorizontaltransferofparticulatematterinthepalamossubmarinecanyonnwmediterranean
AT puigpere nearbottomhorizontaltransferofparticulatematterinthepalamossubmarinecanyonnwmediterranean
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