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CATEGORIES:British Antarctic Survey
SUMMARY:Experimental work on the wave-ice interaction in a
  laboratory tank - Professor Takuji Waseda\, Unive
 rsity of Tokyo
DTSTART;TZID=Europe/London:20241108T153000
DTEND;TZID=Europe/London:20241108T160000
UID:TALK223951AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/223951
DESCRIPTION:In the interest of developing an ice-wave radar\, 
 JAMSTEC built 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 plunger-type wavemaker. The tank is enclos
 ed in a low-temperature room whose temperature can
  be reduced to minus 15 degrees. The water is fres
 h but by agitating the water by waves\, a "grease 
 ice" forms overnight. Interestingly enough\, under
  wave forcing\, the ice particles form a group. Th
 e group size depends on the incident wave amplitud
 e\, remarkably resembling the condition based on a
 n existing pancake ice formation theory. The exper
 imental result was also reproduced by a numerical 
 simulation modeling the grease ice with a non-Newt
 onian fluid. We have also studied radar reflection
  from the created deformed ice sheet using a 79 GH
 z FMCW radar. Other experiments include nonlinear 
 wave train evolution under ice\, ice breakup by wa
 ves\, and so forth.
LOCATION:British Antarctic Survey\, Seminar Room 2
CONTACT:Michael Thorne
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