Open-System Coral Ages Reveal Persistent Suborbital Sea-Level Cycles
Top Cited Papers
- 15 April 2005
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 308 (5720) , 401-404
- https://doi.org/10.1126/science.1104035
Abstract
Sea level is a sensitive index of global climate that has been linked to Earth's orbital variations, with a minimum periodicity of about 21,000 years. Although there is ample evidence for climate oscillations that are too frequent to be explained by orbital forcing, suborbital-frequency sea-level change has been difficult to resolve, primarily because of problems with uranium/thorium coral dating. Here we use a new approach that corrects coral ages for the frequently observed open-system behavior of uranium-series nuclides, substantially improving the resolution of sea-level reconstruction. This curve reveals persistent sea-level oscillations that are too frequent to be explained exclusively by orbital forcing.Keywords
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