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SUMMARY:Experimental work on the wave-ice interaction in a laboratory tank
  - Professor Takuji Waseda\, University of Tokyo
DTSTART:20241108T153000Z
DTEND:20241108T160000Z
UID:TALK223951@talks.cam.ac.uk
CONTACT:Michael Thorne
DESCRIPTION:In the interest of developing an ice-wave radar\, JAMSTEC buil
 t a small wave-ice tank in the Kashiwa campus of the U. of Tokyo in 2020. 
 The tank is 8 m long\, 1.5 m wide\, 0.6 m deep\, and is equipped with a pl
 unger-type wavemaker. The tank is enclosed in a low-temperature room whose
  temperature can be reduced to minus 15 degrees. The water is fresh but by
  agitating the water by waves\, a "grease ice" forms overnight. Interestin
 gly enough\, under wave forcing\, the ice particles form a group. The grou
 p size depends on the incident wave amplitude\, remarkably resembling the 
 condition based on an existing pancake ice formation theory. The experimen
 tal result was also reproduced by a numerical simulation modeling the grea
 se ice with a non-Newtonian fluid. We have also studied radar reflection f
 rom the created deformed ice sheet using a 79 GHz FMCW radar. Other experi
 ments include nonlinear wave train evolution under ice\, ice breakup by wa
 ves\, and so forth.
LOCATION:British Antarctic Survey\, Seminar Room 2
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