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SUMMARY:Modelling stratified turbulence in the ocean interior - Sam Lewin\
 , DAMTP
DTSTART:20211101T130000Z
DTEND:20211101T140000Z
UID:TALK163879@talks.cam.ac.uk
CONTACT:Prof. Jerome Neufeld
DESCRIPTION:Turbulent mixing in the stably stratified ocean interior is of
  fundamental importance for the vertical transport of heat\, carbon\, nutr
 ients\, and other properties that influence global energy budgets and biol
 ogical activity. Motivated by the uncertainties associated with existing m
 ixing parameterisations that are used widely in oceanographic practice\, t
 his talk will look at two key issues in the field of stratified turbulence
 . Firstly\, how is mixing modified by the environment in which flow instab
 ilities leading to turbulence first develop\, and in what way does the his
 tory of the turbulent flow matter to its subsequent evolution? Secondly\, 
 how can we use data-driven tools such as machine learning to better unders
 tand the structure and evolution of stratified turbulent flows\, and what\
 , if any\, physical insight can be gained from such `black box' models? We
  investigate these questions using data from a variety of direct numerical
  simulations designed to reproduce small-scale mixing processes in an ocea
 n environment.
LOCATION:MR5\, CMS
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