Columbia Glacier Forebay (IMAGE) University of Colorado at Boulder Caption Acceleration and calving of the Columbia Glacier and other tidewater glaciers in the far north are a large reason glaciers and ice caps are contributing more to sea level rise this century than Greenland and Antarctica, says a new CU-Boulder study. Credit Robert. S. Anderson, University of Colorado 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.