************************************************************************* Lava and dome session at IAVCEI-2008 From: Harry Pinkerton <h.pinkerton@xxxxxxxxxxxxxxx> ************************************************************************* Time is running out! If you are intending to submit a talk to our session on Lavas and domes: Rheology, structures and emplacement dynamics - or any other session at IAVCEI 2008 - please submit an abstract in by April 1st. We have already received a very exciting set of abstracts, but there is still room for additional oral presentations and posters. Details of the meeting and how to submit an abstract can be found at: http://www.iavcei.org/IAVCEI.htm Read on if you are thinking of submitting an abstract on Lavas and domes: Rheology, structures and emplacement dynamics. Lava flows and domes have a range of dimensions and structures, and one of our challenges is to understand the factors responsible for their formation. Flows and domes that are emplaced during single pulses of magma are generally less complex, structurally, than those emplaced over long time-periods at variable effusion rates. Factors that control the flow behaviour and morphology of flows and domes include: the rheological properties of magma on eruption from the vent and how this changes during emplacement as a consequence of cooling both by heat transfer and undercooling by gas loss; effusion rate and how this changes during eruption; eruption duration; environmental factors during eruption (including emplacement in contact with snow, ice or water); pre-existing topography (particularly river valleys that capture flows) and gravitational instabilities at the margins of flows (e.g. as they encounter very steep slopes) or domes. This session will focus on: - Detailed field and/or remote sensing observations of processes during the emplacement of active or inactive flows or domes and differences arising from emplacement in subaerial or subaqueous conditions - Field measurements of flows or domes during emplacement, including the usefulness of new techniques - Flow/dome simulations in the laboratory - Mathematical modelling of flows or domes - Laboratory measurements of key properties of lava that affect flow behaviour Presentations that cover more than one of these areas are particularly welcome. If you are undecided about whether your material is appropriate, please contact any of the conveners: Harry Pinkerton, Lancaster Environment Centre, Lancaster University, h.pinkerton@xxxxxxxxxxxxxxx <mailto:h.pinkerton@xxxxxxxxxxxxxxx> Katharine V. Cashman, Dept. of Geological Sciences, Univ. of Oregon, cashman@xxxxxxxxxxx <mailto:cashman@xxxxxxxxxxx> Gordon E. GRANT, Pacific Northwest Research Station, USDA Forest Service, Gordon.Grant@xxxxxxxxxxxxxxx <mailto:Gordon.Grant@xxxxxxxxxxxxxxx> Armann Höskuldsson, Institute of Earth Sciences, University of Iceland, armh@xxxxx <mailto:armh@xxxxx> ============================================================== 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. ==============================================================
