Author: D.C. SmithPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A numerical study of mesoscale ocean eddy interaction with a marginal ice zone
Author: D.C. SmithA Numerical Study of a Mesoscale Eddy Interaction with an Ocean Front in the Marginal Ice Zone
Author: Rutledge P. LumpkinPublisher:
ISBN:
Category : Ocean-atmosphere interaction
Languages : en
Pages : 0
Book Description
The East Greenland Current and its associated marginal ice zone is a region of intense dynamic activity. A two layer, primitive equation, numerical model is used to simulate an eddy-jet interaction in the East Greenland marginal ice zone region. The effects of wind direction, topography, and sense of eddy rotation on the eddy-jet interaction are examined to determine the seaward ice transport, icebanding, and dipole formation. It is determined that an anticyclone (15 cm/s) interacting with a jet (30 cm/s) will develop a dipole that advects ice away from the ice edge. The dipole formation and ice advection away from the ice edge is not seen for a cyclone-jet interaction. It is also seen that a jet with no winds flowing parallel to the ice edge will create an iceband due to the cross ice edge Ekman transport. The interaction of both the cyclone and anticyclone with the jet creates downstream perturbations in the jet leading to a sinuous ice edge. Winds greater that 10 m/s dominate the ice dynamics over that induced by the ocean flow fields. Keywords: Ocean currents; Air water interactions; Eddies fluid mechanics; Jet flow; Ocean circulation; Ekman transport properties. Theses.
A Numerical Study of Mesoscale Eddies in a Two Layer Wind-driven Ocean
Author: Liang-Bee LinOcean Engineering Science
Author: Bernard Le MéhautéPublisher: Harvard University Press
ISBN: 9780674017399
Category : Political Science
Languages : en
Pages : 1340
Book Description
Earth Resources
Author: Publisher:
ISBN:
Category : Astronautics in earth sciences
Languages : en
Pages : 760
Book Description
A Numerical Study of Mid-ocean Mesoscale Eddies
Author: William Brechner OwensPublisher:
ISBN:
Category :
Languages : en
Pages : 208
Book Description
Scientific and Technical Aerospace Reports
Author: Dynamics of the Coupled Ice-ocean System in the Marginal Ice Zone
Author: Sirpa HäkkinenPublisher:
ISBN:
Category : Ocean-atmosphere interaction
Languages : en
Pages : 124
Book Description
This study is aimed at the modelling of mesoscale processes such as up/downwelling and ice edge eddies in the marginal ice zones. A 2-dimensional coupled ice-ocean model is used for the study. The ice model is coupled to the reduced gravity ocean model (f-plane) through interfacial stresses. The constitutive equations of the sea ice are formulated on the basis of the Reiner-Rivlin theory. The internal ice stresses are important only at high ice concentrations (90-100%), otherwise the ice motion is essentially free drift, where the air-ice stress is balanced by the ice-water stress. The model was tested by studying the upwelling dynamics. Winds parallel to the ice edge with the ice on the right produce upwelling because the air-ice momentum flux is much greater than air-ocean momentum flux, and thus the Ekman transport is bigger under the ice than in the open water. The upwelling simulation was extended to include temporally varying forcing, which was chosen to vary sinusoidally with 4 day period. This forcing resembles successive cyclone passings. In the model with thin oceanic upper layer, ice bands were formed. The up/downwelling signals do not disappear in wind reversals because of nonlinear advection. This leads to convergences and divergences in oceanic and ice velocities which manifest themselves as ice banding. At least one wind reversal is needed to produce one ice band.
Arctic Oceanography
Author: Publisher: American Geophysical Union
ISBN:
Category : Oceanography
Languages : en
Pages : 289
Book Description
Author: