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Session: Limnology and Dynamics of Volcanic Lakes-ILIC V Konstanz
From: dmitri rouwet <dmitrirouwet@xxxxxxxxx>
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Dear All,
The IAVCEI-Commission of Volcanic Lakes presents a session on Volcanic Lakes
during the *5th International Limnogeology Congress *to be held from *31
August to 3 September 2011* in *Konstanz, Germany.*
during the *5th International Limnogeology Congress *to be held from *31
August to 3 September 2011* in *Konstanz, Germany.*
The *Deadline* for abstract submission is April 15, 2011.
*
*
*
*Limnology and Dynamics of Volcanic Lakes*
This session will deal with the limnology, geochemistry, biology, and
geophysics of volcanic lakes. Volcanic lakes include some of the most
dynamic lake systems on Earth. The chemico-physical equilibrium of crater
lakes topping active volcano-hydrothermal systems is disturbed by the input
of fumarolic vapor condensate, acidic volcanic gas species, and heat. At
highly active volcanoes, phreatic or phreato-magmatic eruptions can breach
through the lake. Deep lakes in volcanic areas (e.g. Lake Kivu, DRC) or
maar-type lakes (e.g. Lake Nyos, Cameroon) are often fed by the regional
bicarbonate-type aquifers. The permanently stratified deep waters of such
lakes may store large amounts of volcanic CO2 and biogenic CH4. When gas
concentrations approach saturation, a physical trigger may lead to the
release of a lethal gas cloud. A broad understanding of volcanic lakes will
help to eventually predict volcanic eruptions or gas bursts, in order to
protect people and human activity around the lakes.
geophysics of volcanic lakes. Volcanic lakes include some of the most
dynamic lake systems on Earth. The chemico-physical equilibrium of crater
lakes topping active volcano-hydrothermal systems is disturbed by the input
of fumarolic vapor condensate, acidic volcanic gas species, and heat. At
highly active volcanoes, phreatic or phreato-magmatic eruptions can breach
through the lake. Deep lakes in volcanic areas (e.g. Lake Kivu, DRC) or
maar-type lakes (e.g. Lake Nyos, Cameroon) are often fed by the regional
bicarbonate-type aquifers. The permanently stratified deep waters of such
lakes may store large amounts of volcanic CO2 and biogenic CH4. When gas
concentrations approach saturation, a physical trigger may lead to the
release of a lethal gas cloud. A broad understanding of volcanic lakes will
help to eventually predict volcanic eruptions or gas bursts, in order to
protect people and human activity around the lakes.
*Conveners: *
(1) *Dmitri Rouwet*
Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Palermo, Italy
(2) *Martin Schmid*
Eawag, Surface Waters - Research and Management, Switzerland
For further information, please contact us.
We hope to see you at the shore of Lake Konstanz.
regards,
--
dmitri
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