Call for abstracts for EGU session GMPV2.4/AS3.29 Volcanic Gas Emissions

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From: Nicole <n.bobrowski@xxxxxxxxx>

5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5


Call for abstracts for EGU session GMPV2.4/AS3.29 Volcanic Gas Emissions
Conveners: Nicole Bobrowski, Giovanni Chiodini, Fátima Viveiros

Last year we had a great session on Volcanic Gas Emission at EGU due to a
lot of very interesting contributions. Next EGU in April 2019 we will have
again the possibility to meet and discuss the science going on in our field
in the same session. The name of the session is "GMPV2.4/AS3.29 Volcanic
gas emissions" and it is convened by Nicole Bobrowski, Giovanni Chiodini
and Fatima Viveiros. It is cross-advertised in another disciplines -
atmospheric science - we had a interdisciplinary audience last year. We
hope we will get another successful exchange in 2019. It would be great to
see you in Vienna, and please submit your contribution until *13:00 CET of
10th of January 2019*.

We are looking forward to your contributions
Best wishes  Fatima, Giovanni and Nicole


Session description:

As magma rises from depth, decreasing pressure allows volatile species to
partition to the gas phase. Bubbles form, grow, coalesce and gases start to
flow through vesiculated magma. Eventually, gases reach the surface and are
released into the atmosphere, in some cases diffused through a soil or
bubbling through a water pool, in other cases forming large plumes or
explosive eruption columns.

Volcanic volatiles play a key role in magma transport and have significant
impact on the style and timing of volcanic eruptions. Gas composition and
flux may change with time, reflecting variations in the magmatic feeding
system of volcanoes. Measuring volcanic gases therefore constitutes a
powerful tool for monitoring and understanding active volcanoes.
Volcanic emissions can also have profound impacts on terrestrial
environment, atmospheric composition, climate and human health at various
temporal and spatial scales. For instance, sulfur dioxide emissions can
cause acid rain, influence aerosol formation and, if an eruption column
reaches the stratosphere, cause global dimming and a decrease in Earthâ??s
surface temperatures for years. Similarly, halogens can dramatically impact
proximal ecosystems, influence the oxidation capacity of the troposphere
and alter the stratospheric ozone layer.

This session will focus on all aspects of volcanic volatile degassing in
the Earthâ??s system. We invite contributions discussing how novel
measurement techniques, field measurements, direct and remote ground- and
space-based observations and modeling studies of volcanic degassing can
provide new insights into volcanic and atmospheric processes on local and
global scales. Studies with the potential to improve our ability to
forecast eruptions are specifically encouraged.

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