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SUMMARY:A Lot of Hot Air: volcanic degassing and its impact on our environ
 ment - Professor Marie Edmonds FRS. Department of Earth Sciences
DTSTART:20251124T180000Z
DTEND:20251124T190000Z
UID:TALK235594@talks.cam.ac.uk
CONTACT:Beverley Larner
DESCRIPTION:Volcanoes are hazardous and beautiful manifestations of the dy
 namic processes that have shaped our planet. Volcanoes impact our environm
 ent in numerous ways. Over geological time volcanic activity has resurface
 d the Earth and provided life with a terrestrial substrate upon which to p
 roliferate. Volcanic degassing has shaped our secondary atmosphere and as 
 part of the process of plate tectonics\, maintained just the right amount 
 of water and carbon dioxide at the surface to produce a stable and equitab
 le climate. Magma in the subsurface in volcanic environments today gives S
 ociety geothermal energy. The fluids degassed from magmas in the plumbing 
 systems of volcanoes give rise to hydrothermal ore deposits\, the source o
 f much of our copper and other metals\, critical to the energy transition.
  In this lecture I will describe the nature and importance of magma degass
 ing for our atmosphere and oceans\, as a source of both pollutants and nut
 rients\, and in the formation of mineral deposits. I will describe my own 
 research in carrying out measurements of volcanic gases (using a range of 
 spectroscopic methods\, from the ground and using drones)\, and analysis o
 f erupted lavas\, to understand the chemistry and physics of volcanic outg
 assing and its role in sustaining our planetary environment.
LOCATION:Bristol-Myers Squibb Lecture Theatre\, Department of Chemistry
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