Two years ago, when we cored in Nong Thale Pron, we also visited the mayor and his wife Aron, who is schoolteacher in the village. They had promised to sample rain and lake water for us, which can be analyzed for isotopic composition.
This year we went back again and asked if they could continue the sampling. Of course, Aron said, they would be happy to do this for us. So we left another round of glass bottles, enough for the coming four years or so. Together these samples will give us an excellent and long data series on how the isotopic composition of the rain may change over time. Will we get an Indian Ocean signal or a Pacific Ocean signal, and when do changes occur? How does the composition of the lake water change over time?
These water analyses are crucial if we want to understand and interpret the carbonaceous sediments of Nong Thale Pron.