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: Coral Paleoclimatology
Extracting core with hydraulic drill on a Porites lobata colony, Clipperton Atoll
The scientists have found an ideal candidate. Armed with a hydraulic drill connected to a compressor on ship, they begin to take their core. The most important part of the drilling process is trying to get a core that follows the coral's plane of maximum growth. Think of the coral's structure as being very similar to an onion sliced in half, with a new ring added each year. If you wanted to drill into an onion to sample as many rings as possible, you would core from the surface directly towards the center. This is exactly how scientists go about getting as long a sample as possible from each coral.

Photo Credits:
Maris Kazmers
SharkSong Photography, Okemos, Michigan
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