Laboratory studies of stratified convection with multiple states
MetadataShow full item record
A simplified box model of the cooling of a salt-stratified ocean has been constructed in the laboratory to test a theory that predicts multiple equilibria if certain conditions exist. An isothermal basin of water had a thin layer of fresh water over salt water. Beside this was a smaller basin connected to the large basin by horizontal tubes at the top, middle and bottom. The small basin was cooled from above. If the top tube has more flow resistance than the bottom tubes, theory indicates that as cooling temperature T* is made colder, there is a sudden transition between two flow states. The velocities in the tubes jump to greater values, while salinity and temperature in the small basin jump to another value. These multiple states are found in the laboratory experiments along with some states that oscillate. Laboratory measurements and layered model calculations for hysteresis and the jump of temperature and salinity agree qualitatively, but there is only rough quantitative agreement.
Author Posting. © The Authors, 2005. This is the author's version of the work. It is posted here by permission of Elsevier Ltd for personal use, not for redistribution. The definitive version was published in Ocean Modelling 11 (2006): 333-346, doi:10.1016/j.ocemod.2005.01.002.
Showing items related by title, author, creator and subject.
Influences of time-dependent precipitation on water mass transformation, heat fluxes, and deep convection in marginal seas Yasuda, Yuki; Spall, Michael A. (American Meteorological Society, 2015-07)Influences of time-dependent precipitation on water mass transformation and heat budgets in an idealized marginal sea are examined using theoretical and numerical models. The equations proposed by Spall in 2012 are extended ...
Spall, Michael A. (American Meteorological Society, 2012-10)The influences of precipitation on water mass transformation and the strength of the meridional overturning circulation in marginal seas are studied using theoretical and idealized numerical models. Nondimensional equations ...
Kwon, Young-Oh; Park, Jong Jin; Gary, Stefan F.; Lozier, M. Susan (American Meteorological Society, 2015-04)Winter outcropping of the Eighteen Degree Water (EDW) and its subsequent dispersion are studied using a ° eddy-resolving simulation of the Family of Linked Atlantic Modeling Experiments (FLAME). Outcropped EDW columns in ...