Lake Nyos
Left: Lake Nyos (Cameroon). Right: Degassing pipe, removing CO2-rich water from the hypolimnion.
Activities during the 2001 field trip
• CTD profiles (using a light-transmission sensor instead of a pH probe)
• Water samples (for the analysis of particle concentrations and main ion composition)
• Deploying of one mooring for continuous temperature measurements at different depths and sediment traps for the collection of settling particles
A model of the lake's stratification and the role of the degassing pipe is now being developed. For more information, contact Martin Schmid .
General information on Lake Nyos: http://www.biology.lsa.umich.edu/~gwk/research/nyos.html
Information on the degassing project (with webcam): http://perso.wanadoo.fr/mhalb/nyos/index.htm
Location of Lake Nyos (Quicktime movie): http://svs.gsfc.nasa.gov/vis/a000000/a002300/a002348/index.html
Halbwachs, M., Sabroux, J.-C., Grangeon, J., Kayser, G., Tochon-Danguy, J.-C., Felix, A., Béard, J.-C., Villevieille, A., Vitter,G., Richon, P., Wüest, A., and Hell, J. (2004).
Degassing the “Killer Lakes” Nyos and Monoun, Cameroon. EOS,Transactions, American Geophysical Union, 85 (30), 281–288, 2004.
Schmid et al (2003). Development and sensitivity analysis of a model for assessing stratification and safety of Lake Nyos during artificial degassing.
Schmid et al (2004). Double-diffusive convection in Lake Nyos, Cameroon.