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CoV9. Session S2.7 Atmospheric volcanic ash – processes, dispersion and impacts on infrastructure and aviation (sponsored by VERTIGO)
From: Müller, Sebastian <sebastian.mueller@xxxxxxxxxxxxxxxxxxx>CoV9. Session S2.7 Atmospheric volcanic ash – processes, dispersion and impacts on infrastructure and aviation (sponsored by VERTIGO)
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Dear Colleagues,
We hereby invite you to submit an abstract to the session we are organizing within the Cities on Volcanoes 9 Meeting (Puerto Varas, Chile, 20-25 November 2016): http://www.citiesonvolcanoes9.com
Session S2.7 Atmospheric volcanic ash – processes, dispersion and impacts on infrastructure and aviation (sponsored by VERTIGO)
Conveners: Sebastian B. Mueller, Matthieu Poret, Andreas Vogel, Joali Paredes, Ulrich Kueppers
Volcanic ash is a heterogeneous mixture of fragments (< 2mm) from glass, lava, crystals and/or older rocks. It is generated in large quantities during explosive volcanic eruptions when magma rising through the crust of the Earth is broken up violently through a plethora of physical processes before and during deposition. Depending on erupted volume, the column height and the emission strength, fine volcanic ash (< 63 µm) may have long atmospheric residence times (from hours to months) and therefore be transported far from the volcano (hundreds to thousands of kilometers). Past and recent eruptions (e.g., 3.9 ky BP Vesuvius, 2008 Chaitén, 2010 Eyjafjallajökull, 2011 Grimsvötn, 2012 Cordón Caulle, 2015 Calbuco) have shown the imminent need to 1) quantitatively constrain atmospheric ash loading and its temporal evolution at high spatial resolution, constrain 2) the physical, chemical and mechanical processes inside atmospheric bound ash clouds and their effects on dispersion as well as 3) mitigate the hazard to infrastructure and aviation industry. Fundamental and applied research can contribute greatly to this goal.
In this session, we will explore the state-of-the-art of on-going research on generation of fine volcanic ash, processes in volcanic ash plume and particle-particle interactions (wet and dry aggregation), ash dispersal modeling and implications for aviation and infrastructure. We appreciate contributions from field and experimental volcanology, tephrachronology, atmospheric dispersion modeling, remote sensing of ash plumes, insurance industry, aviation industry and aero engineering. We aim to foster interdisciplinary engagement between various disciplines from academia and industry. Specifically, we hope to experimentally and numerically address 1) fragmentation mechanisms responsible for generation of volcanic ash related to the highest explosive eruptions, 2) physical and chemical processes leading to ash aggregation, 3) ash plume dispersion and tephra sedimentation studies, 4) real-time detection and quantitative description of ash plumes, 5) ash particle / aeroengine interaction, 6) threat of volcanic ash to general infrastructure 7) preparedness of stakeholders and insurances for future volcanic ash caused damage to aviation industry or general infrastructure.
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/
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