Gravity Currents (IMAGE) Indiana University Caption "Gravity currents," which are induced by changes in water temperature, are almost completely invisible to the naked eye. Introducing dyes (orange) can illustrate motion. Cold-induced gravity currents typically move downward from a lake's near-shore waters. When the currents reach water of equal temperature, they move inward toward a lake's center (rightward in the image). Credit A. Parsons-Field Usage Restrictions None 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.