Paleo Home Research Data Education What's New Features Paleo Perspectives Site Map Mirror Sites National Climatic Data Center, Asheville, North Carolina navigation bar
Paleo Slide Set: Polar Ice Cores
Core processing line
The temperature of the ice cores is never allowed to rise above -15 degrees C, partly to prevent microcracks from forming and allowing present-day air to contaminate the fossil air trapped in the ice fabric, and partly to inhibit recrystallization of the ice structure. Since summer temperatures in central Greenland are often higher than this, the core is moved immediately from the drill dome to a network of trenches beneath the snow surface known as the core processing line (CPL). The first stop in the CPL are these wooden trays where cores are stored before measurements are performed. This ice is from 1500 m and is clear with the exception of a few subtle seasonal dust bands.

Photo Credits:
Kendrick Taylor
DRI, University of Nevada-Reno
Click to View Larger Image
Click on above image to enlarge.

Download a zip file
of a full resolution TIF image

Back to Slide Sets.....

Contact Us
Last Modified: 12 October 2001

Paleoclimatology Program Home Page