*********************************************************************** From: Vernon Manville <V.Manville@xxxxxxxxxx> *********************************************************************** Dear Colleagues we would like to invite you to present a paper at the special session described below, on "Lahars: insights into flow and sediment dynamics from observation, theory, and experiments" to be held at the IAVCEI General Assembly (http://www.iavcei2008.hi.is/) in Reykjavik, Iceland, August 18-25, 2008. Please submit your abstract via the IAVCEI website by April 1: http://www.iavcei2008.hi.is/page/I08-absub Session 3-d: Lahars: insights into flow and sediment dynamics from observation, theory, and experiments Lahars are common occurrences in volcanic settings, where they present a widespread and continuing hazard to human life and infrastructure. Such sediment-laden gravity flows are initiated by various mechanisms, including break-outs from lakes, melting of snow or glacial ice during an eruption, remobilisation of volcaniclastic material by heavy rain, or transformation of debris avalanches. They may be generated syn-eruptively or occur without eruption. A key question is how lahars enlarge and decay by entraining and then depositing particulate material along their flow paths as this governs their rheology, flow behaviour, volume, and discharge. These factors all affect the potential impacts of such flows. This session will focus on the state-of-the-art and new views and concepts concerning the triggering, evolution, transport and depositional mechanisms of lahars. Contributions concerning field observations of lahars and their deposit characteristics, laboratory experiments using analog or real materials, and theoretical modeling are relevant. Research linking models with quantitative field measurements of lahars and their deposits are particularly welcome, as are papers in which these methods are used to underpin hazard assessments. Convenors: Vern Manville, GNS Science, Wairakei Research Centre, Private Bag 2000, Taupo, New Zealand e-mail: v.manville@xxxxxxxxxx Jon Major, U.S. Geological Survey, Cascades Volcano Observatory, 1300 SE Cardinal Court, Bldg 10, Suite 100, Vancouver, WA 98683, USA e-mail: jjmajor@xxxxxxxx Guðrún Sverrisdóttir, Institute of Earth Sciences, Building of Natural Sciences, University of Iceland, Sturlugata 7, IS-101 Reykjavík, Iceland e-mail: gsv@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. ==============================================================
