River Icings (IMAGE) American Geophysical Union Caption Jay Zarnetske explores river icings in Alaska in 2004. A new study by Zarnetske shows river icings are melting out, on average, 26 days earlier in the year than in 2000. Credit Jay Zarnetske 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.