7b. Crater Lakes in Indonesia (Keli Mutu, Wai Sano, Lake Batur, Kawah Putih).  The 3 Keli Mutu lakes on Flores have strongly different compositions and variable colours, and we investigate the basic descriptive chemistry, mineral saturation conditions and lake dynamics.

 
A short article (in Dutch) and more pictures of Keli Mutu can be found at  Dancing on a volcano
 
The Keli Mutu crater lakes, in Flores, Indonesia. The yellow stuff in the back is floating sulfur. The darker lake has a strong gas plume.

Visit also the website of Dr. Gregory Pasternack at UC Davis: http://lawr.ucdavis.edu/faculty/gpast/research.html

Stable isotope characteristics of Indonesian lakes (with Rob Kreulen, The Netherlands). Crater lakes have strongly fractionated ("heavy") stable isotope compositions. We analyse and model the stable isotope evolution of lakes that are warmer than ambient temperatures, taking volcanic inputs and evaporation processes explicitly into account.


d18O - dD data for crater lakes from Indonesia, Japan, Kamchatka and Italy