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IAVCEI-CEV workshop "Density Currents and Topography"
From: Dr Richard James Brown
University of Bristol
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We would like advertise an upcoming IAVCEI Commission on Explosive
Volcanism Field Workshop on Tenerife, 22-29th March 2007.
“Density Currents and Topography”
Leaders
Dr Mike Branney (Department of Geology, University of Leicester, UK)
Dr Richard Brown (Department of Earth Sciences, University of Bristol, UK)
Contact person
Rebecca Williams (University of Leicester, UK)
Email: densitycurrentsworkshop@xxxxxxxxxxxxxx
Location
Tenerife, Canary Islands; accommodation Hotel Playa Sur, El Medano
Dates
March 22-29th 2007 (7 days)
Cost
US approx $650 (including hotel accommodation, food, and local transport)
Participants
15-28 (max)
This 7-day field-workshop is aimed at sedimentologists, volcanologists,
experimentalists and modellers who work on turbidity currents,
pyroclastic density currents and granular flows. It is to consider how
granular density currents respond to irregular topography. How can
forensic analysis of field data can be used to inform and ground-truth
models of natural density currents? Recent shifts in our understanding
will be reviewed, and we will critically assess what useful information
deposits can provide about current dynamics. The gentle flanks of
Tenerife in the Canary Islands preserve world-class deposits from a
variety of pyroclastic density currents that flowed across an irregular
landscape. Both fully dilute and granular-fluid-based types of density
current are recorded, ranging from short-lived pulses to sustained,
quasi-steady currents. Evidence for density stratification, development
of shifting thalwegs, waxing and waning flow conditions, intermittent
turbulence, and response to obstacles will be examined. Superb
continuous desert exposure permits the deposits of an individual current
to be traced widely both in a downcurrent direction and laterally across
topographic highs into valleys. How sustained currents evolve with time,
both locally and regionally, will be explored via successive ‘snap-shot’
views made possible by high-precision temporal correlation using
compositional zoning. Evidence for erosional and depositional behaviour,
by-passing, current wakes, and depositional diachroneity of single
flow-units will be examined. The workshop will be of particular interest
to volcanologists and to sedimentologists who work on turbidites and
ignimbrites and deposition of granular flows. The workshop should cost
approximately. Cheap flights to Tenerife (<US $380 rtn) are available
from many UK and European airports.
More details and further deadlines (for payment) available via contact
email
Deadlines
Email expressions of interest to Rebecca Williams before the end of
November, 2006. Numbers will be limited to 28.
This information will be available on the IAVCEI-CEV website soon.
Dr Richard James Brown
Department of Earth Sciences
University of Bristol
Wills Memorial Building
Queen's Road
Bristol BS8 1RJ
+44 (0)117 954 5243
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