Dr. Clive Oppenheimer has been sampling the gases from the volcano and among other observations, he has been using a thermalimaging camera to collect data on the surface temperatures of the lake itself. We have taken some of the images and put them together in a short movie. The movie shows images that were taken 10 seconds apart. The surface of the lake shows a constant flow of convection with the hotter, lighter colored material rising to the top. This material then cools and becomes darker in color and then sinks back down in to the lake.
About half way through the movie there is a de-gasing of the lake and a large bubble reaches the surface and bursts, throwing lava out and around the edges of the lake itself.