Microstructure Fluxes across Density Surfaces Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/vt150k73b

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • When averaging the equations of motion, thermodynamics, and scalar conservation over turbulent fluctuations, we perform the process in several stages. First, an average is taken over the microscopic scales of turbulence, including the centimeter-scale band in which the dissipation of kinetic energy and temperature or density variance occurs. The eddy-correlation fluxes that arise in this stage are called microstructure fluxes. Next, the equations are transformed into coordinates relative to the microscopically averaged isopycnals. Finally, an average is taken, relative to these isopycnals, over macroscopic scales of eddy variability, which may include the mesoscale band of planetary motions. Average transport terms, analogous to conventional Reynolds transports in fixed-depth averages, arise also from the macroscopic eddies. This is not so for density, for which no counterparts of macroscopic Reynolds transports exist on constant density surfaces. Only microstructure flux divergence, which is synonymous with diapycnal velocity, contributes to the density balance. Under the assumption that microstructure density variance production is in equilibrium with its molecular dissipation, the microstructure density flux has the form of the molecular flux of heat down the vertical mean gradient, amplified by the Cox number. Munk's abyssal recipe for the vertical velocity/diffusivity ratio can now be reinterpreted as the diapycnal velocity/diffusivity ratio.
Resource Type
DOI
Date Available
Date Issued
Citation
  • de Szoeke, Roland A., Andrew F. Bennett, 1993: Microstructure Fluxes across Density Surfaces. Journal of Physical Oceanography, 23(10), 2254–2264.
Series
Rights Statement
Funding Statement (additional comments about funding)
Publisher
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Made available in DSpace on 2011-12-29T17:08:37Z (GMT). No. of bitstreams: 1 deSzoekeRolandA.CEOAS.MicrostructureFluxesAcross.pdf: 879470 bytes, checksum: 84676362dd7435fcb57ceebc87d84de6 (MD5) Previous issue date: 1993-10
  • description.provenance : Approved for entry into archive by Sue Kunda(sue.kunda@oregonstate.edu) on 2011-12-29T17:08:37Z (GMT) No. of bitstreams: 1 deSzoekeRolandA.CEOAS.MicrostructureFluxesAcross.pdf: 879470 bytes, checksum: 84676362dd7435fcb57ceebc87d84de6 (MD5)
  • description.provenance : Submitted by Deborah Campbell (deborah.campbell@oregonstate.edu) on 2011-12-14T21:40:05Z No. of bitstreams: 1 deSzoekeRolandA.CEOAS.MicrostructureFluxesAcross.pdf: 879470 bytes, checksum: 84676362dd7435fcb57ceebc87d84de6 (MD5)

Relationships

In Administrative Set:
Last modified: 07/24/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items