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Buoyancy-Driven Flows
Buoyancy-Driven Flows
2015/7/15
Buoyancy forces, and their interplay with pressure, inertia, and rotation, represent a key ingredient in a wide range of oceanic and atmospheric flow processes. They strongly influence global ocean ci...
Phase transitions of wax esters adjust buoyancy in diapausingCalanoides acutus
Phase transitions wax esters adjust buoyancy diapausing Calanoides acutus
2014/4/8
We study the composition and biophysical properties of wax esters extracted from the Antarctic copepod,Calanoides acutus, to explore if these factors adjust buoyancy in diapausing copepods. Levels of ...
Spontaneousa chiral parity breaking by hydromagnetic buoyancy
Spontaneousa chiral parity hydromagnetic buoyancy
2010/11/11
Evidence for a parity-breaking nature of the magnetic buoyancy instability in a stably stratified gas is reported.In the absence of rotation, no helicity is produced, but the non-helical state is foun...
Alpha effect due to buoyancy instability of a magnetic layer
magnetohydrodynamics Sun: magnetic fields Instabilities Turbulence Sun dynamo
2010/11/11
Context. A strong toroidal field can exist in form of a magnetic layer in the overshoot region below the solar convection zone. This motivates a more detailed study of the magnetic buoyancy instabilit...
On the Generation of Geostrophic Eddies by Surface Buoyancy Flux Anomalies
Geostrophic Eddies Surface Buoyancy Flux Anomalies
2009/2/13
Stochastic fluctuations in the buoyancy flux at the air-sea interface create density anomalies in the oceanic surface layer, which drive quasi-geostrophic motions in the ocean interior. The efficiency...
On the Effects of Buoyancy Flux on Continental Shelf Circulation
Buoyancy Flux Continental Shelf Circulation
2009/2/13
The effects of surface buoyancy flux. atmospheric wind stress and bottom topography on the horizontal and vertical structure of the density and alongshore velocity fields over a continental shelf are ...
A Two-Level Wind and Buoyancy Driven Thermocline Model
Two-Level Wind Buoyancy Driven Thermocline Model
2009/1/16
A simple two-level model is designed to simulate the “thermocline equations,” applicable for large-scale steady oceanic flow. The model serves two functions. First, it replaces problems with the inter...
Adjustment of the Ocean under Buoyancy Forces. Part I：The Role of Kelvin Waves
Buoyancy Forces Kelvin Waves
2009/1/13
The early stages of the adjustment of an ocean toward equilibrium is examined using an ocean general circulation model. The initial state is one with uniform meridional potential temperature gradients...
Gyres Driven by Combined Wind and Buoyancy Flux
buoyancy forcing interfacial flux gyre-scale ocean circulation
2009/1/13
The combined effects of buoyancy forcing and wind in a gyre-scale steady ocean circulation are modeled using discrete layers with an interfacial flux, not necessarily vertical. The equations for vorti...
An analytical study of the combined wind-driven and buoyancy-driven thermocline problem is presented. The analysis is an extension of the ventilated thermocline model of Luyten et al.
An exact solu...
Poleward Buoyancy Transport in the Ocean and Mesoscale Eddies
Poleward Buoyancy Transport Mesoscale Eddies
2009/1/12
There are many dynamic similarities between mesoscale eddies in the ocean, and cyclones and anticyclones in the earth's atmosphere. Observational data, however, are still not adequate to explore this ...
The Influence of Buoyancy Flux from Estuaries on Continental Shelf Circulation
Buoyancy Flux Estuaries Continental Shelf Circulation
2009/1/9
The release of freshwater from a midlatitude estuary to the continental shelf is modeled numerically as a Rossby adjustment problem using a primitive equation model. As the initial salinity front is r...
Wind Effects on the Buoyancy-Driven General Circulation in a Closed Basin Using a Two-Level Model
Buoyancy-Driven Circulation buoyancy fluxes Two-Level Model
2009/1/8
Wind effects on buoyancy-driven circulation in a two-level rectangular basin are studied. The ocean is driven by positive and negative buoyancy fluxes in the northern and southern portions as well as ...
A Buoyancy Flux-Driven Cyclonic Gyre in the Labrador Sea
geostrophic equilibrium Buoyancy Flux-Driven Cyclonic Gyre Labrador Sea
2009/1/6
The generation mechanism for a wintertime cyclonic gyre in the western Labrador Sea, first observed by Clarke and Gascard, is studied by using simple theoretical models. It is shown that atmospheric c...
The response of an ocean with a single active dynamical layer (notionally with an infinitely thick upper layer above it, of slightly less density) to localized buoyancy forcing on a beta-plane is cons...