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Arctic sea ice thickness
If you have a question about this talk, please contact Dr Ed Brambley.
UK submarines have been measuring the thickness of the Arctic Ocean sea ice cover since the mid 1970s. These data sets, processed and archived by the Polar Oceans Physics group of DAMTP , form a unique time-series in the study of the large scale sea ice thickness distribution in the Arctic. We present the results for the full ice thickness and the pressure ridge distributions from the two last cruises of HMS Tireless in the winters of 2004 and 2007, and review similar data collected in earlier voyages in order to evaluate the changes in the ice cover. We compare the submarine measurements, which are made with upward-looking sonars, with those based in electromagnetic induction and satellite altimetry. We also discuss the conditions that led to the historical minimum of the summer sea ice extent in September 2007.
This talk is part of the Monday Mechanics Seminars (DAMTP) series.
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