Overturning Circulation Changes (image) University of New South Wales Share Print E-Mail Caption Figure shows how ocean currents changes with temperature. Top: Ocean currents today. Bottom: Ocean currents during glacial periods. Credit From authors (Watson et al.) Usage Restrictions None Share Print E-Mail 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.