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dc.contributor.authorPohl, Florian
dc.contributor.authorEggenhuisen, JT
dc.contributor.authorTilston, M
dc.contributor.authorCartigny, MJB
dc.date.accessioned2021-03-16T11:45:47Z
dc.date.issued2019-12
dc.identifier.issn2041-1723
dc.identifier.issn2041-1723
dc.identifier.other4425
dc.identifier.urihttp://hdl.handle.net/10026.1/16945
dc.description.abstract

Particle-laden gravity flows, called turbidity currents, flow through river-like channels across the ocean floor. These submarine channels funnel sediment, nutrients, pollutants and organic carbon into ocean basins and can extend for over 1000’s of kilometers. Upon reaching the end of these channels, flows lose their confinement, decelerate, and deposit their sediment load; this is what we read in textbooks. However, sea floor observations have shown the opposite: turbidity currents tend to erode the seafloor upon losing confinement. Here we use a state-of-the-art scaling method to produce the first experimental turbidity currents that erode upon leaving a channel. The experiments reveal a novel flow mechanism, here called flow relaxation, that explains this erosion. Flow relaxation is rapid flow deformation resulting from the loss of confinement, which enhances basal shearing of the turbidity current and leads to scouring. This flow mechanism plays a key role in the propagation of submarine channel systems.

dc.format.extent4425-
dc.format.mediumElectronic
dc.languageen
dc.language.isoen
dc.publisherSpringer Science and Business Media LLC
dc.titleNew flow relaxation mechanism explains scour fields at the end of submarine channels
dc.typejournal-article
dc.typeJournal Article
dc.typeResearch Support, Non-U.S. Gov't
plymouth.author-urlhttps://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000488233300005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=11bb513d99f797142bcfeffcc58ea008
plymouth.issue1
plymouth.volume10
plymouth.publication-statusPublished online
plymouth.journalNature Communications
dc.identifier.doi10.1038/s41467-019-12389-x
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering/School of Biological and Marine Sciences
plymouth.organisational-group/Plymouth/Users by role
plymouth.organisational-group/Plymouth/Users by role/Academics
dc.publisher.placeEngland
dcterms.dateAccepted2019-08-30
dc.rights.embargodate2021-3-20
dc.identifier.eissn2041-1723
dc.rights.embargoperiodNot known
rioxxterms.versionofrecord10.1038/s41467-019-12389-x
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2019-12
rioxxterms.typeJournal Article/Review


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