Title:
Enhanced vertical mixing within mesoscale eddies due to high frequency winds in the south China sea

dc.contributor.advisor Bracco, Annalisa
dc.contributor.author Cardona Orozco, Yuley Mildrey en_US
dc.contributor.committeeMember Deng, Yi
dc.contributor.committeeMember Emanuele Di Lorenzo
dc.contributor.department Earth and Atmospheric Sciences en_US
dc.date.accessioned 2012-09-20T18:24:13Z
dc.date.available 2012-09-20T18:24:13Z
dc.date.issued 2011-07-08 en_US
dc.description.abstract The South China Sea is a marginal basin with a complex circulation influenced by the East Asian Monsoon, river discharge and intricate bathymetry. As a result, both the mesoscale eddy field and the near-inertial energy distribution display large spatial variability and they strongly influence the oceanic transport and mixing. With an ensemble of numerical integrations using a regional ocean model, this work investigates how the temporal resolution of the atmospheric forcing fields modifies the horizontal and vertical velocity patterns and impacts the transport properties in the basin. The response of the mesoscale circulation in the South China Sea is investigated under three different forcing conditions: monthly, daily and six-hourly momentum and heat fluxes. While the horizontal circulation does not display significant differences, the representation of the vertical velocity field displays high sensitivity to the frequency of the wind forcing. If the wind field contains energy at the inertial frequency or higher (daily and six-hourly cases), then Vortex Rossby waves and near inertial waves are excited as ageostrophic expression of the vigorous eddy field. Those waves dominate the vertical velocity field in the mixed layer (vortex Rossby waves) and below the first hundred meters (near inertial waves) and they are responsible for the differences in the vertical transport properties under the various forcing fields as quantified by frequency spectra, vertical velocity profiles and vertical dispersion of Lagrangian tracers. en_US
dc.description.degree MS en_US
dc.identifier.uri http://hdl.handle.net/1853/44917
dc.publisher Georgia Institute of Technology en_US
dc.subject High frequency winds en_US
dc.subject Vortex Rossby waves en_US
dc.subject Near inertial waves en_US
dc.subject Vertical mixing en_US
dc.subject.lcsh Vortex-motion
dc.subject.lcsh Wave-motion, Theory of
dc.title Enhanced vertical mixing within mesoscale eddies due to high frequency winds in the south China sea en_US
dc.type Text
dc.type.genre Thesis
dspace.entity.type Publication
local.contributor.advisor Bracco, Annalisa
local.contributor.corporatename School of Earth and Atmospheric Sciences
local.contributor.corporatename College of Sciences
relation.isAdvisorOfPublication 1005ebc9-13b4-4a39-ba98-b1b7b162588f
relation.isOrgUnitOfPublication b3e45057-a6e8-4c24-aaaa-fb00c911603e
relation.isOrgUnitOfPublication 85042be6-2d68-4e07-b384-e1f908fae48a
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
cardona_yuley_m_201108_mast.pdf
Size:
3.8 MB
Format:
Adobe Portable Document Format
Description: