Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/8650
DC Field | Value | Language |
---|---|---|
dc.contributor.authorall | Khripounoff, A.; Ifremer | en |
dc.contributor.authorall | Crassous, P.; Ifremer | en |
dc.contributor.authorall | Lo Bue, N.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
dc.contributor.authorall | Dennielou, B.; Ifremer | en |
dc.contributor.authorall | Silva Jacinto, R.; Ifremer | en |
dc.date.accessioned | 2013-04-19T08:37:11Z | en |
dc.date.available | 2013-04-19T08:37:11Z | en |
dc.date.issued | 2012-09-19 | en |
dc.identifier.uri | http://hdl.handle.net/2122/8650 | en |
dc.description.abstract | Current velocities and vertical sediment fluxes in the Var submarine canyon were assessed at three stations respectively at 800 m, 1200 m and 1800 m depth, using moorings deployed for 4 months during winter 2008–2009. During this period, we observed three major sediment gravity flows, all characterized by sudden increases in current velocity that lasted 2–5 h and by downward particle fluxes. Each gravity flow, described using a high frequency current meter and two Acoustic Doppler Current Profiler (75 and 300 kHz ADCP) showed distinctive features. The first event, triggered during a flood of the Var River, was determined to be a hyperpycnal current with a large vertical extent (>100 m high) and relatively low velocity (40 cm s 1). The second event, observed after a Var River flood, was more energetic with a maximum horizontal current peak of 60 cm s 1 but with a low vertical extent (30 m high). This event was considered to be a turbidity landslide. The third was the result of a local canyon wall failure. It was characterized by a speed of >85 cm s 1. These peaks of current speed were associated with large clouds of material that transported sediment along the canyon and reached up to 200 g m 2 d 1 of sediment (>1 g m 2 d 1 of organic carbon). Our measurements in the Var canyon show the important role of gravity flows transporting particulate matter to the deep-sea floor. These large inputs of sediment and organic carbon may have a significant impact on deep-sea carbon storage in the Mediterranean Sea. | en |
dc.language.iso | English | en |
dc.publisher.name | Elsevier Science Limited | en |
dc.relation.ispartof | Progress in Oceanography | en |
dc.relation.ispartofseries | /106 (2013) | en |
dc.subject | submarine canyon | en |
dc.subject | gravity flows | en |
dc.title | Different types of sediment gravity flows detected in the Var submarine canyon (northwestern Mediterranean Sea) | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 138-153 | en |
dc.subject.INGV | 03. Hydrosphere::03.02. Hydrology::03.02.02. Hydrological processes: interaction, transport, dynamics | en |
dc.identifier.doi | 10.1016/j.pocean.2012.09.001 | en |
dc.description.obiettivoSpecifico | 1.8. Osservazioni di geofisica ambientale | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | restricted | en |
dc.relation.issn | 0079-6611 | en |
dc.relation.eissn | 1873-4472 | en |
dc.contributor.author | Khripounoff, A. | en |
dc.contributor.author | Crassous, P. | en |
dc.contributor.author | Lo Bue, N. | en |
dc.contributor.author | Dennielou, B. | en |
dc.contributor.author | Silva Jacinto, R. | en |
dc.contributor.department | Ifremer | en |
dc.contributor.department | Ifremer | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
dc.contributor.department | Ifremer | en |
dc.contributor.department | Ifremer | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | restricted | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Ifremer | - |
crisitem.author.dept | Ifremer | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | - |
crisitem.author.dept | Ifremer | - |
crisitem.author.dept | Ifremer | - |
crisitem.author.orcid | 0000-0002-5160-941X | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 03. Hydrosphere | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | Existing users please Login |
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AK-progress.pdf | article | 2.79 MB | Adobe PDF |
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