Geophysical granular and particle-laden flows

Workshop theme

Workshop held at "@-Bristol", Harbourside, Bristol, UK

Many large-scale natural hazards and geomorphic processes involve granular or particle-laden flows. Examples abound in our natural environment, ranging from avalanches, debris flows, rock-falls, pyroclastic flows and lahars, to turbidity currents, sediment transport in rivers and dune formation. This meeting will bring together environmental scientists, geographers, geologists and geophysicists, who observe these phenomena in the field, with mathematicians, physicists and engineers who are developing sophisticated mathematical models and laboratory based experiments to understand these complex and challenging flows. A group of leading mathematicians and scientists will be gathered at the Isaac Newton Institute for a 4 month programme on Granular and Particle-Laden Flow at this time, and this Satellite workshop provides an unparalleled opportunity for environmental scientists, theoreticians and experimentalists to meet, discuss and exchange ideas.

Applications for this workshop are now closed

Timetable

Monday 27th October 2003
09:10 to 09:50	Registration \& Poster session 1	No Room Required
09:50 to 10:00	Conference opening \& local arrangements	No Room Required
10:00 to 11:00	Stephen Sparks University of Bristol Concentrated particulate flows in geological systems	No Room Required
11:00 to 11:30	Coffee	No Room Required
11:30 to 12:10	Tim Druitt Pyroclastic flows as shearing fluidised systems	No Room Required
12:10 to 12:30	Michael Branney University of Leicester Sedimentary record of changes between granular fluid-based \& fully dilute pyroclastic density currents	No Room Required
12:30 to 14:00	Lunch \& Poster session 1	No Room Required
14:00 to 15:00	Herbert Huppert University of Cambridge Axisymmetric granular collapses	No Room Required
15:00 to 15:30	Olivier Roche Université Blaise Pascal Experiments on granular flows generated from instantaneous release of initially gas-fluidised material	No Room Required
15:30 to 15:50	Jeremy Phillips University of Bristol Enhanced mobility of granular mixtures of fine and coarse particles	No Room Required
15:50 to 16:20	Tea	No Room Required
16:20 to 16:40	Richard Brown Osservatorio Vesuviano Bypassing \& diachronous deposition from density currents: evidence from a giant regressive bedform in the Poris ignimbrite, Tenerife	No Room Required
16:40 to 17:00	Eliza Calder The Open University Mobility of pyroclastic flows \& surges at the Soufriere Hills Volcano, Montserrat	No Room Required
17:00 to 18:00	James Vallance Field \& experimental constraints on modelling geophysical granular flows, with examples from volcanic debris flows \& pyroclastic flows	No Room Required
18:15 to 18:00	Drinks Reception at the Pitcher \& Piano	No Room Required

Tuesday 28th October 2003
09:10 to 10:10	Dieter Issler NaDesCoR Experiments on snow avalanches \& their implications for modelling	No Room Required
10:10 to 10:40	Peter Talling Flow transformation between turbidity current \& submarine debris flow constrained by correlating individual beds over 120 x 60 km of outcrop	No Room Required
10:40 to 11:10	Coffee	No Room Required
11:10 to 11:30	Xinjun Cui University of Manchester Rapid granular free-surface flow past a cylindrical obstacle	No Room Required
11:30 to 12:10	Margarita Eglit Institute of Mechanics of Moscow State University Mathematical models of snow avalanches	No Room Required
12:10 to 12:30	Peter Gauer Norwegian Geotechnical Institute Possible mechanisms of snow entrainment in avalanches	No Room Required
12:30 to 14:00	Lunch \& Poster session 1	No Room Required
14:00 to 15:00	Kouichi Nishimura Snow in motion - snow avalanche \& blowing snow	No Room Required
15:00 to 15:30	E. Bruce Pitman University at Buffalo Extending models of granular avalanche flows	No Room Required
15:30 to 15:50	Gert Lube Scaling behaviour of granular flows	No Room Required
15:50 to 16:20	Tea	No Room Required
16:20 to 16:40	Colin Thornton University of Birmingham A simple model for particle size segregation in granular avalanches	No Room Required
16:40 to 17:00	Kristìn Hákonardóttir University of Bristol The interaction of snow avalanches with dams: "An experimental study"	No Room Required
17:00 to 17:30	Peter Thomas University of Warwick Granular ripples under rotating flow	No Room Required
17:30 to 18:00	Jim McElwaine University of Cambridge The interaction granular avalanches \& the ambient fluid	No Room Required
19:30 to 18:00	Conference Dinner at the Glass Boat	No Room Required

Wednesday 29th October 2003
09:10 to 10:10	Jim Best University of Leeds The fluid \& sediment dynamics of sand dunes under unidirectional water flows: insights from laboratory \& field experiments	No Room Required
10:10 to 10:40	Kevin Pickering University College London Role of mass transport complexes in evolution \& growth patterns of confined basin-floor submarine fans, mid-eocene, s.Spanish Pyrenees	No Room Required
10:40 to 11:10	Coffee	No Room Required
11:10 to 11:30	Anders Elverhoi University of Oslo Experimental studies of subaqeous debris flow particle tracking \& measurements of porefluid pressure \& total stress	No Room Required
11:30 to 12:10	Doug Masson Large debris avalanches on volcanic island flanks - what can the deposits tell us about emplacement processes	No Room Required
12:10 to 12:30	Michele Larcher University of Trento Rheological stratification of high concentration liquid granular flows	No Room Required
12:30 to 14:00	Lunch \& Poster session 2	No Room Required
14:00 to 18:00	Free afternoon	No Room Required

Thursday 30th October 2003
09:10 to 10:10	James Rice Harvard University Heating, weakening \& melting of wet fault gouge during earthquake slip	No Room Required
10:10 to 10:40	Dmitry Garagash Stability of undrained quasi-static deformation of saturated granular materials	No Room Required
10:40 to 11:10	Coffee	No Room Required
11:10 to 11:30	Julia Morgan Rice University Particle dynamics simulations of gravitational volcanic deformation	No Room Required
11:30 to 12:10	Marcus Bursik University at Buffalo Effects of erosion on propagation of granular flows	No Room Required
12:10 to 12:30	Delphine Doppler Vortex ripples on a tilting granular bed in a 2D experiment	No Room Required
12:30 to 14:00	Lunch \& Poster session 2	No Room Required
14:00 to 15:00	Roger Denlinger The role of internal stresses in the flow of granular avalanches	No Room Required
15:00 to 15:20	A continuum model for aeolian sand ripples	No Room Required
15:20 to 15:40	Nian-Sheng Cheng Nanyang Technological University Bedload transport in laminar flows	No Room Required
15:40 to 16:20	Tea	No Room Required
16:20 to 16:40	Simon Dadson University of Cambridge Structural stability of gravel beds	No Room Required
16:40 to 17:00	Keld Romer Rasmussen Shear stress partitioning in aeolian saltation	No Room Required
17:00 to 17:20	Fabio De Blasio Role of water in the mobility of sub aqueous debris flows	No Room Required
17:20 to 17:40	Ishan Sharma Cornell University Dynamics of granular asteroids	No Room Required

Friday 31st October 2003
09:10 to 10:10	Christophe Ancey The rheophysical approach in the study of natural gravity-driven flows	No Room Required
10:10 to 10:40	Jean Rajchenbach Nucleation \& growth of dry grain avalanches	No Room Required
10:40 to 11:10	Coffee	No Room Required
11:10 to 11:30	Shiva Pudasaini Free-surface motion of avalanches over natural terrains \& PIV-measurements for flows down curved chutes	No Room Required
11:30 to 12:10	David McClung University of British Columbia The slab avalanche as a self-organised critical phenomenon	No Room Required
12:10 to 12:30	Sebastien Dartevelle Michigan Technological University Multiphase modelling of geophysical granular gravity currents. Pyroclastic flow dynamic and depositional processes	No Room Required
12:30 to 14:00	Lunch \& Poster session 2	No Room Required
14:00 to 15:00	Charles Campbell University of Southern California Elastic granular flows	No Room Required
15:00 to 15:30	Wen Long University of Delaware Discussion on two-phase boundary layer sediment transport model	No Room Required
15:30 to 15:50	Mark Schmeeckle Arizona State University Synchronous high-speed measurement of near-bed turbulent flow \& particle entrainment from a granular bed	No Room Required
15:50 to 16:10	Tea	No Room Required

Speakers

Christophe Ancey
Jim Best University of Leeds
Michael Branney University of Leicester
Richard Brown Osservatorio Vesuviano
Marcus Bursik University at Buffalo
Eliza Calder The Open University
Charles Campbell University of Southern California
Nian-Sheng Cheng Nanyang Technological University
Xinjun Cui University of Manchester
Simon Dadson University of Cambridge
Sebastien Dartevelle Michigan Technological University
Fabio De Blasio
Roger Denlinger
Delphine Doppler
Tim Druitt
Margarita Eglit Institute of Mechanics of Moscow State University
Anders Elverhoi University of Oslo
Dmitry Garagash
Peter Gauer Norwegian Geotechnical Institute
Herbert Huppert University of Cambridge
Kristìn Hákonardóttir University of Bristol
Dieter Issler NaDesCoR
Michele Larcher University of Trento
Wen Long University of Delaware
Gert Lube
Doug Masson
David McClung University of British Columbia
Jim McElwaine University of Cambridge
Julia Morgan Rice University
Kouichi Nishimura
Jeremy Phillips University of Bristol
Kevin Pickering University College London
E. Bruce Pitman University at Buffalo
Shiva Pudasaini
Jean Rajchenbach
Keld Romer Rasmussen
James Rice Harvard University
Olivier Roche Université Blaise Pascal
Mark Schmeeckle Arizona State University
Ishan Sharma Cornell University
Stephen Sparks University of Bristol
Peter Talling
Peter Thomas University of Warwick
Colin Thornton University of Birmingham
James Vallance

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