Transmission Loss in the Water Column (IMAGE) Science China Press Caption The source is located at a range of 4 km and a depth of 100 m by the: (a) analytical solution at 25 Hz; (b) present model at 25 Hz; (c) analytical solution at 100 Hz; (d) present model at 100 Hz. Credit © Science China Press 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.