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SUMMARY:Statistics of the sea ice thickness distribution - Peter Wadhams (
 University of Cambridge)
DTSTART:20170915T135000Z
DTEND:20170915T143000Z
UID:TALK79471@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:Measurements of the shape of the sea ice underside by submarin
 e and other methods have enabled us to determine the statistical distribut
 ions which described under-ice morphology. Two of the most interesting fin
 dings are that (a) the probability density function of deep ice draft <br>
 and of the drafts of individual pressure ridges both obey a negative expon
 ential distribution\, and (b) the distribution of the spacings between suc
 cessive pressure ridge keels obey a log-normal distribution. Agreement wit
 h the equations is very close. Other parameters of the ice underside\, inc
 luding fractal properties\, are much more variable\, as are characteristic
 s such as the slop angles of pressure ridges. We examine to what extent th
 e topography of the upper ice surface (freeboard instead of draft\; sails 
 instead of keels) obeys the same relationships\, and speculate on the phys
 ical reasons for these distributions.&nbsp\; <br>
LOCATION:Seminar Room 1\, Newton Institute
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