Coral growth-rate insensitive Sr/Ca as a robust temperature recorder at the extreme latitudinal limits of Porites

SHOKO HIRABAYASHI; YUSUKE YOKOYAMA; ATSUSHI SUZUKI; YUTA KAWAKUBO; YOSUKE MIYAIRI; TAKASHI OKAI; SATOSHI NOJIMA

doi:10.2343/geochemj.2.0259

Express Letter

Coral growth-rate insensitive Sr/Ca as a robust temperature recorder at the extreme latitudinal limits of Porites

SHOKO HIRABAYASHI, YUSUKE YOKOYAMA, ATSUSHI SUZUKI, YUTA KAWAKUBO, YOSUKE MIYAIRI, TAKASHI OKAI, SATOSHI NOJIMA

Author information

SHOKO HIRABAYASHI
Atmosphere and Ocean Research Institute, The University of Tokyo
Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo
YUSUKE YOKOYAMA
Atmosphere and Ocean Research Institute, The University of Tokyo
Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo
ATSUSHI SUZUKI
Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST)
YUTA KAWAKUBO
Atmosphere and Ocean Research Institute, The University of Tokyo
Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo
YOSUKE MIYAIRI
Atmosphere and Ocean Research Institute, The University of Tokyo
TAKASHI OKAI
Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST)
SATOSHI NOJIMA
Amakusa Marine Biological Laboratory, Kyushu University

Keywords: skeletal oxygen isotope in the coral, Sr/Ca, high latitudes, coral growth rates

JOURNAL FREE ACCESS

2013 Volume 47 Issue 3 Pages e1-e5

DOI https://doi.org/10.2343/geochemj.2.0259

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Abstract

Oxygen isotope values of low-growth coral (<5 mm/yr) skeletons may reflect kinetic effects, which is problematic for sea surface temperature (SST) reconstruction. Here, we report a Sr/Ca-based SST reconstruction for a temperate Porites coral collected from Kyushu, Japan, near the northern latitudinal extent of hermatypic corals. Results indicate that Sr/Ca variations in a low-growth coral remain independent from growth rate, in contrast to the oxygen isotope ratios of the same coral.

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