Evaluation of the degassing effect through detailed monitoring of CO2 concentration at Lake Nyos, Cameroon

Abstract

Fifteen years after the Lake Nyos catastrophe in 1986, one degassing pipe was installed into the Lake to prevent a recurrence of a limniceruption. Three pipes include two additional pipes installed in 2011 are pumping up deep water by gas self-lifting. Results of detail monitoring obtained by a new method (Yoshida et al., 2010) clalified the effect of the degassing system.