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Now showing items 1-10 of 11
When an eddy encounters shelf-slope topography
(Massachusetts Institute of Technology, 2016)
Eddies in the ocean move westwards. Those shed by western boundary currents must then interact with continental shelf-slope topography at the western boundary. The presence of other eddies and mean flows complicates this ...
Equatorial ocean dynamics impacting upwelling west of the Galápagos Archipelago
(Massachusetts Institute of Technology, 2019)
The Galápagos Cold Pool (GCP) is a region of anomalously cold sea surface temperature (SST) just west of the Galápagos Archipelago. Modeling studies have shown that the GCP is maintained by wind- and current-driven upwelling. ...
Residual overturning circulation and its connection to Southern Ocean dynamics
(Massachusetts Institute of Technology, 2020)
Over the last 20 years, our understanding of the meridional overturning circulation has improved, but primarily in a two-dimensional, zonally-averaged framework. In this thesis, I have pushed beyond this simplification and ...
Chaotic advection, mixing, and property exchange in three-dimensional ocean eddies and gyres
(Massachusetts Institute of Technology, 2018)
This work investigates how a Lagrangian perspective applies to models of two oceanographic flows: an overturning submesoscale eddy and the Western Alboran Gyre. In the first case, I focus on the importance of diffusion as ...
Buoyancy-driven circulation in the Red Sea
(Massachusetts Institute of Technology, 2014)
This thesis explores the buoyancy-driven circulation in the Red Sea, using a combination of observations, as well as numerical modeling and analytical method. The first part of the thesis investigates the formation mechanism ...
Internal hydraulic jumps with upstream shear
(Massachusetts Institute of Technology, 2017)
Internal hydraulic jumps in flows with upstream shear are investigated numerically and theoretically. The role of upstream shear has not previously been thoroughly investigated, although it is important in many oceanographic ...
Dynamics of North Atlantic western boundary currents
(Massachusetts Institute of Technology, 2017)
The Gulf Stream and Deep Western Boundary Current (DWBC) shape the distribution of heat and carbon in the North Atlantic, with consequences for global climate. This thesis employs a combination of theory, observations and ...
Strong wind events across Greenland's coast and their influence on the ice sheet, sea ice and ocean
(Massachusetts Institute of Technology, 2012)
In winter, Greenland's coastline adjacent to the subpolar North Atlantic and Nordic Seas is characterized by a large land-sea temperature contrast. Therefore, winds across the coast advect air across a horizontal temperature ...
Investigating the role of Trichodesmium spp. in the oceanic nitrogen cycle through observations and models
(Massachusetts Institute of Technology, 2014)
This work concerns the nitrogen fixation and abundance of Trichodesmium colonies in the western subtropical-tropical North Atlantic and their connections with physical processes. Data were collected in fall 2010 and spring ...
Mechanisms for enhanced turbulence in the Drake Passage Region of the Southern Ocean
(Massachusetts Institute of Technology, 2016)
The Southern Ocean is one of the most energetic regions of the world ocean due to intense winds and storm forcing, strong currents in the form of the Antarctic Circumpolar Current (ACC) interacting with steep topography, ...