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SUMMARY:Combining field observations and the volcanic plume model ATHAM to
  examine "dirty thunderstorm" dynamics of ancient and modern eruptions - D
 r Alexa Van Eaton (U.S Geological Survey\, Vancouver)
DTSTART:20131122T150000Z
DTEND:20131122T160000Z
UID:TALK48950@talks.cam.ac.uk
CONTACT:Yves Moussallam
DESCRIPTION:Abstract: What do hailstone formation\, deep moist convection\
 , and lightning-producing charge separation have to do with explosive volc
 anism? Until relatively recently\, these concepts were exclusive to the me
 teorology community. However\, they are currently known to play important 
 roles in the development of volcanic clouds. This talk explores how the hy
 brid concept of powerful volcanic eruptions as ash-laden “dirty” thund
 erstorms is helping to resolve some of the more peculiar behaviors inferre
 d from super-eruption deposits in New Zealand and directly observed during
  recent activity in the Cascades and Alaska. 
LOCATION:Seminar Room\, Main Geography Department Building\, Downing Place
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