Intra-Annual Variability of the Radiocarbon Content of Corals from the Galapagos Islands

We report AMS 14 C measurements on subannual samples of coral from the Galapagos Islands that span the period, 1970–1973. Both the major 1972 El Niño/Southern Oscillation event and intra-annual changes in regional upwelling of 14 C-depleted waters associated with alternation of surface-ocean current patterns are evident in the record. Our data show that the corals preserve a detailed record of past intra-annual variations of the 14 C content of surface ocean water

Coral · Radiocarbon dating · Upwelling · Coral and Marine Ecosystems Studies · Isotope Analysis in Ecology · Marine and fisheries research · Geology · Oceanography · Paleontology

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