Water contamination_Surface (IMAGE) Gauss Centre for Supercomputing Caption Solid contamination (green) are introduced at the surface of the water body. The sediment bed at the bottom (black-white) shows "ridge"-type features. Credit Michael Krayer, KIT Usage Restrictions Full attribution to Michael Krayer and KIT License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.