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dc.contributor.authorGrimshaw, Ren
dc.contributor.authorGuo, Cen
dc.contributor.authorHelfrich, Ken
dc.contributor.authorVlasenko, Ven
dc.date.accessioned2015-11-28T16:16:48Z
dc.date.available2015-11-28T16:16:48Z
dc.date.issued2014-01-01en
dc.identifier.issn0022-3670en
dc.identifier.urihttp://hdl.handle.net/10026.1/3842
dc.description.abstract

Internal solitary waves commonly observed in the coastal ocean are often modeled by a nonlinear evolution equation of the Korteweg-de Vries type. Because these waves often propagate for long distances over several inertial periods, the effect of Earth's background rotation is potentially significant. The relevant extension of the Kortweg-de Vries is then the Ostrovsky equation, which for internal waves does not support a steady solitary wave solution. Recent studies using a combination of asymptotic theory, numerical simulations, and laboratory experiments have shown that the long time effect of rotation is the destruction of the initial internal solitary wave by the radiation of small-amplitude inertia-gravity waves, and the eventual emergence of a coherent, steadily propagating, nonlinear wave packet. However, in the ocean, internal solitary waves are often propagating over variable topography, and this alone can cause quite dramatic deformation and transformation of an internal solitary wave. Hence, the combined effects of background rotation and variable topography are examined. Then the Ostrovsky equation is replaced by a variable coefficient Ostrovsky equation whose coefficients depend explicitly on the spatial coordinate. Some numerical simulations of this equation, together with analogous simulations using the Massachusetts Institute of Technology General Circulation Model (MITgcm), for a certain cross section of the South China Sea are presented. These demonstrate that the combined effect of shoaling and rotation is to induce a secondary trailing wave packet, induced by enhanced radiation from the leading wave. © 2014 American Meteorological Society.

en
dc.format.extent1116 - 1132en
dc.language.isoenen
dc.titleCombined effect of rotation and topography on shoaling oceanic internal solitary wavesen
dc.typeJournal Article
plymouth.issue4en
plymouth.volume44en
plymouth.publication-statusPublisheden
plymouth.journalJournal of Physical Oceanographyen
dc.identifier.doi10.1175/JPO-D-13-0194.1en
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/00 Groups by role
plymouth.organisational-group/Plymouth/00 Groups by role/Academics
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/REF 2021 Researchers by UoA
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/UoA07 Earth Systems and Environmental Sciences
plymouth.organisational-group/Plymouth/Research Groups
plymouth.organisational-group/Plymouth/Research Groups/Marine Institute
dc.identifier.eissn1520-0485en
dc.rights.embargoperiodNot knownen
rioxxterms.versionofrecord10.1175/JPO-D-13-0194.1en
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.typeJournal Article/Reviewen


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