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SUMMARY:Volcanic outgassing - Dr Marie Edmonds (Earth Sciences\, Cambridge
 )
DTSTART:20150126T141500Z
DTEND:20150126T151500Z
UID:TALK56459@talks.cam.ac.uk
CONTACT:Dr Amanda Maycock
DESCRIPTION:Volatile elements\, whilst only making up a few weight per cen
 t of magma\, have a dominant effect on the evolution of magma chemistry\, 
 buoyancy and the fluid dynamics of mixing processes and eruption. Volcanoe
 s are a critical part of the global geochemical cycling of volatiles from 
 the interior of the Earth to the atmosphere and back again into the mantle
 . Volcanic emissions have shaped the composition of our atmosphere and ove
 r geological time have controlled climate and constrained the evolution of
  life on Earth. Today\, volcanoes cause short term radiative forcing after
  large explosive eruptions. Persistent outgassing volcanoes create regiona
 l tropospheric plumes that are sites of dynamic reactive chemistry. The fl
 ux and composition of gases\, whilst seemingly simple observations to make
 \, are challenging to quantify in volcanic environments. In this talk I wi
 ll review the advances we have made in quantifying volcanic emissions\, th
 e insights that these measurements and observations have led to with respe
 ct to both volcanic and atmospheric chemical processes\, and the challenge
 s that remain for the future.  
LOCATION:Unilever Lecture Theatre\, Department of Chemistry
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