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
Long Delta 18O record from Urvina Bay, Galapagos.
The last figure demonstrated the accuracy of coral d18O as a proxy measurement of sea surface temperatures. d18O can also serve as a proxy measurement for precipitation, particularly in areas like the central Pacific where large ENSO-related oscillations in annual rainfall occur. Now that scientists have established the reliability of coral d18O as a proxy signal, they are beginning to take deeper cores that provide increasingly long climatic records. Think of coral d18O as a paleothermometer that enables us to answer important questions about climatic variability in the world's oceans. This core from the Galapagos Islands gives us a 350-year record of sea surface temperatures and, by extension, El Niño activity in the eastern Pacific.

Photo Credits:
Thomas.G. Andrews
NOAA Paleoclimatology Program
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