Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/8650
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dc.contributor.authorallKhripounoff, A.; Ifremeren
dc.contributor.authorallCrassous, P.; Ifremeren
dc.contributor.authorallLo Bue, N.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.contributor.authorallDennielou, B.; Ifremeren
dc.contributor.authorallSilva Jacinto, R.; Ifremeren
dc.date.accessioned2013-04-19T08:37:11Zen
dc.date.available2013-04-19T08:37:11Zen
dc.date.issued2012-09-19en
dc.identifier.urihttp://hdl.handle.net/2122/8650en
dc.description.abstractCurrent 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.isoEnglishen
dc.publisher.nameElsevier Science Limiteden
dc.relation.ispartofProgress in Oceanographyen
dc.relation.ispartofseries/106 (2013)en
dc.subjectsubmarine canyonen
dc.subjectgravity flowsen
dc.titleDifferent types of sediment gravity flows detected in the Var submarine canyon (northwestern Mediterranean Sea)en
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber138-153en
dc.subject.INGV03. Hydrosphere::03.02. Hydrology::03.02.02. Hydrological processes: interaction, transport, dynamicsen
dc.identifier.doi10.1016/j.pocean.2012.09.001en
dc.description.obiettivoSpecifico1.8. Osservazioni di geofisica ambientaleen
dc.description.journalTypeJCR Journalen
dc.description.fulltextrestricteden
dc.relation.issn0079-6611en
dc.relation.eissn1873-4472en
dc.contributor.authorKhripounoff, A.en
dc.contributor.authorCrassous, P.en
dc.contributor.authorLo Bue, N.en
dc.contributor.authorDennielou, B.en
dc.contributor.authorSilva Jacinto, R.en
dc.contributor.departmentIfremeren
dc.contributor.departmentIfremeren
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.contributor.departmentIfremeren
dc.contributor.departmentIfremeren
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptIfremer-
crisitem.author.deptIfremer-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia-
crisitem.author.deptIfremer-
crisitem.author.deptIfremer-
crisitem.author.orcid0000-0002-5160-941X-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent03. Hydrosphere-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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