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SUMMARY:Lessons from a restless caldera: multi-parameter studies to unders
 tand the past\, present and future of volcanic activity at Santorini volca
 no\, Greece - Tamsin Mather\, Oxford
DTSTART:20170306T173000Z
DTEND:20170306T183000Z
UID:TALK67131@talks.cam.ac.uk
CONTACT:Alex Lipp
DESCRIPTION:Understanding the behavior of magma and hydrothermal fluids at
  restless calderas is important for many reasons. The interplay between th
 e magmatic and hydrothermal systems at caldera-forming volcanoes is key to
  interpreting many of the geophysical signals measured at the surface used
  to understand their subsurface state and structure. Several recent studie
 s have highlighted that structural controls may be important in terms of t
 he movements of both types of fluids in the Earth’s crust below volcanoe
 s with implications including hazard management and geothermal prospecting
 . Caldera-forming systems are often characterized by eruptive activity cov
 ering a wide range of size scales and repose intervals. Understanding how 
 these different scales of volcanism at the same system relate to each othe
 r is a key science challenge when seeking to understand these types of vol
 cano. This presentation will explore these issues using examples from the 
 caldera-forming system Santorini volcano\, Greece. This is a relatively we
 ll-studied system that last erupted significantly about 75 years ago and h
 as recently experienced a period of unusual unrest. Lessons from field map
 ping and geochemistry\, high-resolution digital elevation models\, interfe
 rometric synthetic aperture radar (InSAR) and degassing surveys and compos
 itions can be brought together to yield insights into the behavior of this
  and similar volcanic systems. \n\nAll welcome to attend\, free for member
 s of the Sedgwick Club\, £2 for non-members. Refreshments provided!
LOCATION:Harker Room 1\, Department of Earth Sciences
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