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CATEGORIES:Isaac Newton Institute Seminar Series
SUMMARY:Thermohaline Staircases and Shear: Formation and D
 isruption Mechanisms - Justin Brown (Naval Postgra
 duate School)
DTSTART;TZID=Europe/London:20240521T160000
DTEND;TZID=Europe/London:20240521T163000
UID:TALK215758AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/215758
DESCRIPTION:Though thermohaline staircases exist in a large re
 gion of the Arctic\, the interactions of such stai
 rcases with shear and turbulence is a topic that h
 as only seen substantial exploration in the last f
 ew years. Our research has focused on the interact
 ions between these staircases with shear\, such as
  that generated by internal waves or intrusions. T
 his work is done using a spectral numerical code w
 ith a dynamic mesh that is perfectly suited for st
 udying small-scale turbulent processes in regions 
 of large-scale shear. We have performed a series o
 f two- and three-dimensional simulations with and 
 without shear and demonstrate the capacity of shea
 r to both form and disrupt Arctic staircases. Both
  isotropic shear and unidirectional oscillating sh
 ear are considered. In cases of strong shear\, we 
 show that these staircases can be disrupted\, thou
 gh they are remarkably resilient if the shear is i
 ntermittent. In cases of weak shear (Richardson nu
 mbers greater than 2)\, the spontaneous developmen
 t of layers is observed.
LOCATION:Seminar Room 1\, Newton Institute
CONTACT:
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