*********************************************************** From: Eliza Calder <ecalder@xxxxxxxxxxx> *********************************************************** Please consider joining us for the AGU 2009 Join Assembly in Toronto, Canada May 2427 (http://www.agu.org/meetings/ja09/) Abstract deadline: 4 March 2009 For a list of all volcanology/petrology sessions see: http://www.agu.org/meetings/ja09/program/scientific_session_search.php In particular we would like to draw your attention to the following: Special Session V15: Pyroclastic Currents: From Field Observations and Experiments to Modeling and Probabilistic Hazard Maps. Exciting advances are being made in the understanding of pyroclastic currents, and in particular the physical processes involved in their emplacement such as the complex dynamics of granular flows, the generation of accompanying ash clouds and emplacement of lateral blasts. Outstanding opportunities to observe and measure the behavior of real flows have been afforded by a number of recent eruptions. Experimental and computational fluid dynamics approaches provide rich insight into controlling parameters. Computational flow models comprise two main types (1) complex fluid dynamics and solid mechanics models that attempt to capture as much of the underlying physics of a process as possible; (2) empirical, or abstracted, models that capture the essence of a complex process. Improved understanding of the physical processes involved has a direct impact on assessing the types of flow models suitable for use in generating probabilistic hazard maps, as well as understanding their respective limitations. Models that can be relatively quickly run, in stochastic mode, and are coupled with geographic data, are being increasing tested and employed in the generation of probabilistic hazards maps during real episodes of volcanic crisis. Forward modeling applications are still largely at an experimental stage, but developments of both appropriate models and methodologies pose an exciting new opportunity in a field that has traditionally relied on mapping the distribution of previous deposits. In this session, we encourage contributions from a broad spectrum of topics dealing with emplacement dynamics of flows from field, laboratory and computational approaches as well as flow modeling and probabilistic hazard mapping applications. Please contact one of the session organizers if you have questions about this session Eliza Calder (ecalder@xxxxxxxxxxx) Josef Dufek (dufek@xxxxxxxxxx) Gustavo Cordoba (gcordoba@xxxxxxxxxxx) ============================================================== 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. ==============================================================
