Sampling Trench (image) Oregon State University Share Print E-Mail Caption This is the sampling trench for dust studies on Taylor Glacier. Windblown dust from local sources contaminates the upper ice layers and uncontaminated samples are obtained from a meter below the glacier's surface. Credit (Photo courtesy of Hinrich Schaefer) 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.