Show simple item record

dc.contributor.authorFrank, Dariaen
dc.contributor.authorLandel, JRen
dc.contributor.authorDalziel, Stuarten
dc.contributor.authorLinden, Paulen
dc.date.accessioned2018-04-06T09:29:55Z
dc.date.available2018-04-06T09:29:55Z
dc.date.issued2017-09-28en
dc.identifier.issn0094-8276
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/274640
dc.description.abstractMotivated by potential effects of the Earth's rotation on the Deepwater Horizon oil plume, we conducted laboratory experiments on salt-water point plumes in a homogeneous rotating environment across a wide range of Rossby numbers $0.02<Ro<1.3$. We report a striking physical instability in the plume dynamics near the source: after approximately one rotation period, the plume tilts laterally and starts to precess anticyclonically. The mean precession frequency $\bar\omega$ scales linearly with the rotation rate $\Omega$ as $\bar\omega\approx0.4\Omega$. We find no evidence of a critical Rossby number above which precession ceases. We infer that a conventionally defined Rossby number is not an appropriate parameter when the plume is maintained over a long time: provided $\Omega \neq 0$, rotation is always important to the dynamics. This indicates that precession may occur in persistent oceanic or atmospheric plumes even at low latitudes.
dc.publisherWiley-Blackwell
dc.titleAnticyclonic precession of a plume in a rotating environmenten
dc.typeArticle
prism.endingPage9407
prism.issueIdentifier18en
prism.publicationDate2017en
prism.publicationNameGeophysical Research Lettersen
prism.startingPage9400
prism.volume44en
dc.identifier.doi10.17863/CAM.16992
dcterms.dateAccepted2017-08-14en
rioxxterms.versionofrecord10.1002/2017GL074191en
rioxxterms.versionVoR*
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2017-09-28en
dc.contributor.orcidFrank, Daria [0000-0001-7833-6784]
dc.contributor.orcidDalziel, Stuart [0000-0002-8487-2038]
dc.contributor.orcidLinden, Paul [0000-0002-8511-2241]
dc.identifier.eissn1944-8007
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idConsortium for Ocean Leadership (via University of Miami) (S1540-664390)


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record