MathsNet: Research Student Directory

Name Terry, Helen
Group Industrial and Applied Mathematics
Room C18, Math Sci
Telephone +44 (0) 115 95 14961 [direct dial]
Email
Thesis Title Effects of rotation on eddies and buoyancy driven currents with applications to Antartica
Thesis Abstract The Earth's climate is controlled by the global ocean circulation, which is driven by the flow of dense polar shelf waters that cascade down continental slopes. Such flows are heavily impacted by tidal activity, and recent observations have shown that the production of Antarctic Bottom Water in the Ross Sea is completely governed by its strong tides. Previous research has found that tides have three main impacts: tidal currents redirect the down-slope flow of dense water, tidal excursion of shelf water causes a pulsing of the source of dense water released onto the slope, and tides cause time-variable mixing into the plume due to their oscillating shear. The planned research involves analytical and computational modelling of the physics of pulsing plumes. Laboratory scale models will replicate the key physics in order to validate the basic assumptions of the mathematical work. This fundamental understanding will then be applied to the oceanographically-relevant case of a dense current flowing down a seabed slope. This will then ultimately be extended to the case of a density-stratified ocean on a rotating Earth providing crucial insight into the modification of Antarctic Bottom Water as it transits the continental slope, helping improve parameterisations of the ocean bottom boundary layer, a critical sub-component of modern ocean climate models.
School contact information School of Mathematical Sciences
University of Nottingham
University Park
Nottingham, NG7 2RD
UK
Tel: +44 (0) 115 951 4949
Fax: +44 (0) 115 951 4951