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EGU 2014. Granular processes in geophysical flows: results from field, laboratory and numerical studies
From: Anne Mangeney <mangeney@xxxxxxx>EGU 2014. Granular processes in geophysical flows: results from field, laboratory and numerical studies
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Dear Colleagues,
We would like to invite you to present a paper in the EGU 2014 session SSP3.1.4:
Granular processes in geophysical flows: results from field, laboratory and numerical studies.
Conveners: Maxime Farin, Kasper van der Vaart, Anne Mangeney, and Olivier Roche
European Geosciences Union General Assembly 2014, 29 April - 02 May 2014, Vienna.
The abstract submission deadline is 16 January 2014, 13:00 CET. To submit an abstract please check http://www.egu2014.eu/abstract_management/how_to_submit_an_abstract.html
In case you would like to apply for financial support, please submit an application no later than 29 November 2013. More information on: http://www.egu2014.eu/support_and_distinction.html
Abstract:
This
session aims to explore the processes of erosion, transport,
segregation, sedimentation and deposition within flowing granular media
such as debris flows, snow and debris avalanches, pyroclastic flows and
landslides.
The
dynamics of particulate geophysical flows are strongly affected by the
addition or loss of mass through erosion and deposition of granular
material. During transport, sorting of grain sizes, shapes and densities
by particle segregation modifies the flow behaviour and results in
patterns observed in many geophysical flows. These processes are highly
dependent on flow parameters (viscosity, density, pore fluid pressure or
temperature) and may lead to a rich variety of complex depositional
structures in granular geophysical flows.
Measurements
in the field are indispensable for examining geophysical flows and
provide information about their real-life dynamics. Despite the large
number of different in-situ measurement campaigns aiming to quantify the
aspects of these flows, the task remains difficult due to hazards in
the areas of study. Another issue with field measurements is that they
can be very specific to the measurement site. In addition, the number of
natural variables and parameters is often large and difficult to
control or accurately measure.
For
these reasons, analogous laboratory experiments and numerical studies
are also important. Not only do they allow the study of complex flows
with reduced risk to the researcher, but they allow parameters and
variables to be investigated in a controlled environment, greatly
increasing the reliability of data. Simple models built “bottom up” from
idealized experiments and numerical studies may be compared with
results obtained from the field, in a collaborative effort of
experimentalists, numericists, theoreticians and field researchers.
For
this session we invite contributions from experimental, numerical and
field investigations examining erosion, transport, segregation,
sedimentation and deposition processes within particulate geophysical
flows and their resulting deposits. This session aims to showcase a wide
range of studies in order to better understand the complex and
fascinating behaviour of geophysical flows and the underlying granular
processes.
Anne
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