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SUMMARY:EESS talk on "Internal waves and wave-driven transport in lakes"
DTSTART:20171128T121500
DTEND:20171128T131500
DTSTAMP:20260407T103118Z
UID:91a1d32169e063527f781f3445bc37a94a789af8b943d27d8744743e
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr Leo R. Maas\, Associate professor\, Ocean Wave Dynamics\, U
 trecht University and  NIOZ (Royal Netherlands Institute for Sea Research
 )\, Texel\, NL\n\nShort biography:\nLeo Maas is a physical oceanographer\,
  interested in fundamental physical processes that arise in lakes and ocea
 ns\, and in their mathematical descriptions. He graduated in oceanography 
 at Utrecht University. For 30 years He worked as researcher at NIOZ\,  fo
 r 30 years\, published about 100 refereed papers\, and as of October 2016 
 switched back as professor to Utrecht University.\nAbstract:\nLakes can be
  stably-stratified due to temperature variations. On a rotating earth\, la
 kes are also subject to Earth’ rotation. Stratification and rotation bot
 h inhibit the free exchange of gases\, plankton and minerals. At the same 
 time\, however\, stratification and rotation do support a subsurface type 
 of wave\, that attains its maximum displacement within the fluid domain\, 
 below the surface. These\, so-called internal waves transport energy and m
 omentum throughout the lake\, away from their generation sites. Internal w
 aves can thus be partially responsible for mixing (especially for mixing a
 t depth) and for transporting material elsewhere. But is this sufficient t
 o break the constraints imposed by stratification and rotation?\nConceptua
 l ideas of waves in enclosed fluid domains will be used to describe the ba
 sic features of internal wave dynamics and related transport\, such as the
  occurrence of amphidromes\, wave chaos and wave attractors.  These featu
 res will be Illustrated by laboratory experiments in stratified and rotati
 ng fluids\, their connection to lake (and sea) observations will be discus
 sed\, and we will seek to answer the above question.
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STATUS:CONFIRMED
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