7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7 from: Rebecca Williams <Rebecca.Williams@xxxxxxxxxx> 7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7 Do you study density currents? We'd like to draw your attention to our session at EGU 2019 "Bridging the gap between volcanic and marine density current behaviour and sedimentation". This is a co-hosted session by SSP/GMPV/NH with the intention of bringing together milti-disciplinary perspectives on density currents, to learn from each others approaches and answer common questions. Session description is pasted below. The session is here: https://meetingorganizer.copernicus.org/EGU2019/session/30500 Abstract submission deadline is the 10th January. Many thanks Rebecca Williams, Michael Clare, Edward Pope & Pete Rowley Submarine turbidity currents and pyroclastic density currents, despite their contrast in carrier fluid, have much in common. Both pose a significant hazard as catastrophic flows. Both environments are challenging to directly sample during emplacement, and suffer from a relative lack of observation in the field. Their deposits demonstrate a similar set of bedform structures and lithostratigraphies. How much can be learnt and shared between the different communities? Where do comparisons usefully end, and where can paradigms be borrowed and adapted? How do recent studies where pyroclastic density currents have entered water and transitioned into turbidity currents add to our understanding of flow transitions? This session aims to bring together field, experimental and numerical studies from a number of geophysical mass flow communities to share best practice, methods, and analyses and answer a number of key challenges: (1) how can we image these flows? (2) how do the basal parts of these flows interact with the bed and can we quantify basal entrainment? (3) how do we model density-stratified or multiple-layer flows effectively, considering exchange between the layers? (4) how can we scale-up analogue models to field-scale in light of recent advances in flow monitoring? (5) what are the end-member states of density flows, how does a flow transition between these end member states and can we really infer this from lithofacies analysis? (6) can we distinguish trigger or initiating processes by deposit analysis? (7) how do flows evolve as they move away from the source, down and/or around topography, and what controls this behaviour? (8) how can we understand the processes of sedimentation from density currents and how much do deposits reveal about the flow processes? ============================================================== 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/ To unsubscribe from the volcano list, send the message: signoff volcano to: listserv@xxxxxxx, or write to: volcano-request@xxxxxxx. To contribute to the volcano list, send your message to: volcano@xxxxxxx. Please do not send attachments. ============================================================== ------------------------------ End of Volcano Digest - 9 Jan 2019 to 10 Jan 2019 (#2019-4) ***********************************************************
