Dear colleagues,
S1.17 | Calderas: unrest, eruptions, risk
Calderas are the _expression_ of large, long-lived and often restless magmatic systems. During non-eruptive periods calderas frequently experience unrest, manifested by a deviation of geochemical and geophysical indicators from background values. Such unrest does not usually lead to eruption; indeed periods of intermittent unrest may continue for centuries. Prolonged magma emplacement may result in uplift, or resurgence, of the caldera floor. The unrest may also culminate in an eruption, which may occur anywhere within or outside the caldera. Eruptions from calderas cover the whole spectrum and the largest eruptions that occur on Earth have all been associated with major caldera collapses. Therefore, calderas can be considered the most hazardous type of volcano on Earth. Thus, there is a strong case for improved scientific understanding of unrest processes and how they relate to volcanic activity and/or resurgence, in order to properly define related hazards and mitigate the associated risks. This session aims at merging our knowledge of short- and long-term activity of calderas, understanding the related pre-eruptive and eruptive processes, and to consider how this information can be used to mitigate the related risks. In particular, the session aims to address the following crucial questions: • what happens during unrest below the caldera? • how is magma emplaced below calderas and how and where is it delivered to the surface? • how can we evaluate and communicate the hazards related the pre-eruptive and eruptive phases? • how may scientists best contribute to mitigate risk in densely inhabited calderas?
Invited Speakers:
Valerio Acocella | Università Degli Studi Roma Tre | UNIROMA3 · Department of Science - Italy
Joan Martì | Consejo Superior de Investigaciones Científicas – Spain
The deadline for abstract submission is 18 May 2018 (https://www.citiesonvolc
Best Regards,
The Conveners:
Mauro Di Vito | INVG, Osservatorio Vesuviano, Napoli, Italy • mauro.divito@xxxxxxx
Darren Gravley | University of Canterbury, Christchurch, New Zealand • darren.gravley@xxxxxxxxxxxxx
Magnus Tumi Gudmundsson | University of Iceland, Reykjavik, Iceland • mtg@xxxxx
Roberto Isaia | INVG, Osservatorio Vesuviano, Napoli • roberto.isaia@ingv.i
Jan Lindsay | University of Auckland, Auckland, New Zealand • j.lindsay@xxxxxxxxxxxxxx
Laura Sandri | INGV Bologna, Italy • laura.sandri@xxxxxxx
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