Collecting sediment (IMAGE) Arizona State University Caption Lead author Adams collecting sediment to determine the erosion rate in a watershed in the rainforest climate zone, foothills of the Bhutan Himalaya. Credit Credit: K. Whipple/ASU 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.