IUGG 2015. session VS23 Rheological and Mechanical Influences on Volcanic Eruptions
*****************************************************************************************************
Dear Colleagues,
We would like to draw your attention on the VS23 session at IUGG Prague (22nd June- 2nd July) http://www.iugg2015prague.com/iavcei-symposia.htm
VS23 Rheological and Mechanical Influences on Volcanic Eruptions
Convener: Jackie Kendrick (Liverpool, U.K.)
Co-conveners: Corrado Cimarelli (Munich, Germany), Benoit Cordonnier (Munich, Germany), Bettina Scheu (Munich, Germany)
Description
During volcanic eruptions magma undergoes a complex array of multi-scale processes from magma chamber to surface. Understanding the processes that couple to the geophysical signals is vitally important to understanding the progression of volcanic unrest. In storage, crystallisation, settling and convection play an important role in magma evolution, while the injection of fresh magma stimulates mixing processes. As magma begins to ascend within the conduit, crystallisation and degassing leads to rheological changes that dictate explosive effusive transitions. The flow and transport of 3-phase magma (glass, crystals and pores) leads to strain-dependent reorganisation, producing fracture events that release seismic energy. In the upper conduit crystal and volatile contents, amongst other influences, dictate fragmentation depth and efficiency, which can be investigated experimentally. Alternatively, slower extrusion rates can allow for the growth of a lava dome, which itself presents a challenge in terms of strength and stability, with dome collapse presenting a notable hazard in active volcanoes. Also of importance are the properties of the rocks in which the magma is hosted, which can promote or hinder propagation, undergo alteration and influence flank stability. Given the large scope of the topic, we particularly welcome contributions that integrate results from volcanological and rock mechanics experiments as well as theoretical, numerical and analytical modelling with observations of the natural system.
The abstract submission deadline is approaching on 31st Jan.
Please feel free to contact me at Jackie.kendrick@xxxxxxxxxxxxxxx if you have any questions.
From myself and the co-conveners - We look forward to seeing you there!
Volcano Listserv is a collaborative venture among Arizona State University (ASU), Portland State University (PSU), the Global Volcanism Program (GVP) of the Smithsonian Institution's National Museum of Natural History, and the International Association for Volcanology and Chemistry of the Earth's Interior (IAVCEI).
ASU - http://www.asu.edu/ PSU - http://pdx.edu/ GVP - http://www.volcano.si.edu/ IAVCEI - http://www.iavcei.org/
To unsubscribe from the volcano list, send the message: signoff volcano to: listserv@xxxxxxx, or write to: volcano-request@xxxxxxx.
To contribute to the volcano list, send your message to: volcano@xxxxxxx. Please do not send attachments.
==============================================================
