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Intrusive Mixing in a Mediterranean Salt Lens—Intrusion Slopes and Dynamical Mechanisms
Publisher: American Meteorological Society
Abstract: Thermohaline intrusions found in Meddy ?Sharon? were laterally coherent The slope of these intrusions across density surfaces was in opposite senses in the upper and lower part of the meddy, consistent with (i) the McIntyre ...
Double-Diffusive Interleaving: The Influence of Nonconstant Diffusivities
Publisher: American Meteorological Society
Abstract: The influence of nonconstant diffusivity and viscosity on double-diffusive interleaving is examined using a simple model. The analysis allows a prediction of the slope, vertical wavenumber, and growth rate of the fastest-growing ...
Qualitative Behavior and Nonoscillation of Stommel's Thermohaline Box Model
Publisher: American Meteorological Society
Abstract: Stommel's two-box model of thermohaline circulation is generalized to incorporate 1) either mixed or Newtonian thermal and saline boundary conditions; 2) temperature-dependent evaporation, including a simple coupled air-sea ...
Anticyclonic Lenses in Large-Scale Strain and Shear
Publisher: American Meteorological Society
Abstract: A three-layer model is used to study the effects of pure strain flow and simple shearing flow on isolated, anticyclonic, baroclinic vortices such as Mediterranean salt lenses. Exact steady solutions are found representing ...
Double-Diffusive Interleaving in the Presence of Turbulence: The Effect of a Nonconstant Flux Ratio
Publisher: American Meteorological Society
Abstract: The influence of turbulent mixing on double-diffusively driven thermohaline interleaving is investigated. The problem is formulated using a turbulence-modified flux ratio to link the fluxes of T and S; the addition of ...
Nonlinear Equilibration of Thermohaline Intrusions
Publisher: American Meteorological Society
Abstract: The nonlinear behavior of thermohaline intrusions on a wide front is investigated using a one-dimensional numerical model. The model is used to follow the evolution of a field of intrusions from infinitesimal amplitude to ...
Effects of Ambient Turbulence on Interleaving at a Baroclinic Front
Publisher: American Meteorological Society
Abstract: In this paper the authors investigate the action of ambient turbulence on thermohaline interleaving using both theory and numerical calculations in combination with observations from Meddy Sharon and the Faroe Front. The ...
Dynamic Response of Single Electrode Conductivity Probes in Slow Flows
Publisher: American Meteorological Society
Abstract: Four designs of single electrode conductivity probes, three of them new, were tested for response characteristics in conditions simulating laboratory internal wave flows. Two of the new designs were shown to be significantly ...
Variations in Apparent Mixing Efficiency in the North Atlantic Central Water
Publisher: American Meteorological Society
Abstract: Microstructure data from the North Atlantic Tracer Release Experiment (NATRE) are presented, providing detailed profiles of the thermal variance ? in the upper 360 m of the Canary Basin for the fall and spring seasons. The ...
Observations of Interaction between the Internal Wavefield and Low-Frequency Flows in the North Atlantic
Publisher: American Meteorological Society
Abstract: A total of four moorings from POLYMODE array I and II were analyzed in an investigation of the interaction of wavefields and mean flow. In particular, evidence for internal wave-mean flow interaction was sought by searching ...