******************************************************** From: Hugh Tuffen <h.tuffen@xxxxxxxxxxxxxxx> ******************************************************** Dear Volcanophiles, We would like to draw your attention to volcanology session V34 at this year's Fall AGU, which addresses the brittle-ductile behaviour of magma and its consequences. Contributions from modellers, experimentalists, field geologists, volcano seismologists and others are most welcome, so please see the session description below and note the abstract submission deadline of 10th September. We hope to have a lively session with plenty of discussion! Best wishes, Hugh Tuffen and co-convenors ---------------------------------------------------------------------------- V34: Flow and Fracture of Magma: Bringing Together Experimentation, Modelling and Monitoring Sponsor: Volcanology, Geochemistry, and Petrology CoSponsor: Seismology Conveners: Yan Lavallée LMU-Munich [lavallee@xxxxxxxxxxxxxxxxxxx], Hugh Tuffen Lancaster University [h.tuffen@xxxxxxxxxxxxxxx], Alina Hale Australian Computational Earth Systems Simulator [alinah@xxxxxxxxxxxxxxx], Arthur Jolly GNS Science, NZ [A.Jolly@xxxxxxxxxx] Session description: Magma is ductile, magma is brittle. Structural analysis of volcanic conduit margins and the interior of lava domes reveals a wide spectrum of behaviour from slow, fluid-like deformation to rapid, brittle fracturing and progressive development of fault gauges. It is increasingly apparent that this contrasting rheological behaviour plays a key role in controlling ascent dynamics, eruption styles and monitored indicators of unrest, especially since we now have experimental proof that high-temperature magma fracture is seismogenic. This new evidence suggests that careful monitoring of seismicity, ground deformation and degassing can potentially be used to track the transition from ductile to brittle flow behaviour, and therefore to forecast the transitions of eruptive styles. We propose a multidisciplinary session in which field observations, laboratory experiments, multi-parameter modelling and numerical simulations will improve our understanding of magma ascent and eruptive processes, with the aim of developing a viable eruption forecast method. This session aims to draw together multi-disciplinary contributions in order to illuminate new approaches, methodologies and results. We encourage a diverse range of submissions encompassing magma rheology and fracture mechanics, textural studies, conduit dynamics, lava dome growth, brittle-ductile structures, multi-parameter modelling and forecasting methods. Invited speakers: Peter Sammonds (UCL) and more TBC Abstract submission deadline: 10th September Online submission: http://submissions3.agu.org/submission/entrance.asp Choose session V34. ============================================================== To unsubscribe from the volcano list, send the message: signoff volcano to: listserv@xxxxxxx, or write to: volcano-request@xxxxxxxx To contribute to the volcano list, send your message to: volcano@xxxxxxxx Please do not send attachments. ==============================================================
