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Thermobaric flow
preprint
posted on 2006-01-16, 10:38 authored by Anthony KaySimple model flows demonstrating the combined effect of thermobaricity
with either salinity variations or nonlinear temperature-dependence in the equation
of state of water are investigated. An inviscid flow exhibits a three-layer
behaviour, resulting in the formation of a mid-depth temperature maximum,
such as is observed in some high-latitude oceans and deep lakes. This may be
subsequently overtaken by nonlinear frontogenesis, which in the viscous case
is shown to generate a thermal bar. Thermobaricity shifts the thermal bar
towards the colder water, and initially produces a slope in the downwelling
plume, but this transient feature disappears as the dominant frontogenesis tilts
the plume backto the vertical.
History
School
- Science
Department
- Mathematical Sciences
Pages
478908 bytesPublication date
2001Notes
This is a pre-print of an article which appeared in the journal, Dynamics of Atmospheres and Oceans [© Elsevier]. The definitive version: KAY, A., 2001. Thermobaric flow. Dynamics of Atmospheres and Oceans, 34(2-4), pp. 263-289, is available at: http://www.sciencedirect.com/science/journal/03770265Language
- en