Heron Island Reef Isopora Coral d18O and Sr/Ca Data 1971-2012 CE Brenner, L.D.; Linsley, B.K.; Potts, D.C. Brenner, L.D. Linsley, B.K. Potts, D.C. earth science/paleoclimate/corals and sclerosponges (delta 18O,Isopora sp.,null,per mil PDB,null,corals and sclerosponges,interpolated,isotope ratio mass spectrometry,N,12 pts per year interp; for core GBR538) earth science/paleoclimate/corals and sclerosponges (delta 18O,Isopora sp.,null,per mil PDB,null,corals and sclerosponges,interpolated,isotope ratio mass spectrometry,N,12 pts per year interp; for core GBR641A) earth science/paleoclimate/corals and sclerosponges (strontium/calcium,Isopora sp.,null,millimole per mole,null,corals and sclerosponges,interpolated,inductively-coupled plasma atomic emission spectroscopy,N,12 pts per year interp; for core GBR641A) earth science/paleoclimate/corals and sclerosponges (strontium/calcium,Isopora sp.,null,millimole per mole,null,corals and sclerosponges,interpolated,inductively-coupled plasma atomic emission spectroscopy,N,12 pts per year interp; for core GBR538) earth science/paleoclimate/corals and sclerosponges (age,null,null,year Common Era,null,corals and sclerosponges,null,null,N,null) earth science/paleoclimate/corals and sclerosponges (strontium/calcium,Isopora sp.,null,millimole per mole,null,corals and sclerosponges,interpolated,inductively-coupled plasma atomic emission spectroscopy,N,12 pts per year interp; for core GBR637) earth science/paleoclimate/corals and sclerosponges (strontium/calcium,Isopora sp.,null,millimole per mole,null,corals and sclerosponges,interpolated,inductively-coupled plasma atomic emission spectroscopy,N,12 pts per year interp; from core HER-OR) earth science/paleoclimate/corals and sclerosponges (strontium/calcium,Isopora sp.,null,millimole per mole,null,corals and sclerosponges,interpolated,inductively-coupled plasma atomic emission spectroscopy,N,12 pts per year interp; from core HER12-13) earth science/paleoclimate/corals and sclerosponges (delta 18O,Isopora sp.,null,per mil PDB,null,corals and sclerosponges,interpolated,isotope ratio mass spectrometry,N,12 pts per year interp; for core GBR637) earth science/paleoclimate/corals and sclerosponges (delta 18O,Isopora sp.,null,per mil PDB,null,corals and sclerosponges,interpolated,isotope ratio mass spectrometry,N,12 pts per year interp; from core HER-OR) earth science/paleoclimate/corals and sclerosponges (delta 18O,Isopora sp.,null,per mil PDB,null,corals and sclerosponges,interpolated,isotope ratio mass spectrometry,N,12 pts per year interp; from core HER12-13) earth science/paleoclimate/corals and sclerosponges earth science/paleoclimate/corals and sclerosponges (Heron Island Reef>LATITUDE -23.45>LONGITUDE 151.92) Isopora (Acroporidae) is a genus of often encrusting, branching to submassive corals that are common in many shallow habitats on modern and fossil Indo-West Pacific reefs. Although abundant, Isopora is largely absent from paleoceanographic literature. The scarcity of large Porites and the abundance of Isopora retrieved from the Great Barrier Reef (GBR) on Integrated Ocean Drilling Program Expedition 325 focused paleoceanographic attention on Isopora. Here we provide the first independent high-resolution calibration of both Sr/Ca and δ18O for temperature analyses based on Isopora and demonstrate its consistency with Porites records. We developed modern skeletal Sr/Ca- and δ18O-sea surface temperature (SST) calibrations based on five modern Isopora colonies from Heron Island in the southern GBR. Pairing the coral Sr/Ca record with monthly SST data yielded Sr/Ca-SST sensitivities from −0.061 ± 0.004 (centered) to −0.083 ± 0.007 (raw) mmol/mol °C−1 based on reduced major axis regressions. These sensitivities are in the middle of the range of published Porites values and overlap most published values for Isopora, −0.075 ± 0.011 to −0.065 ± 0.011 mmol/mol °C−1. The δ18O-SST sensitivities range from −0.184 ± 0.014 (centered) to −0.185 ± 0.014 (raw) ‰ °C−1, assuming that all seasonal variation in δ18O was due to SST. These δ18O-SST sensitivities are smaller than the widely accepted value of −0.23‰ °C−1 for biogenic aragonite but are at the upper end of high-resolution Porites-defined sensitivities that are consistently less than the aforementioned established value. Our results validate the use of Isopora as an alternative source of paleoceanographic records in habitats where large massive Porites are scarce or absent. STUDY NOTES: Five corals with oxygen isotopes and trace metal records. Provided Keywords: coral, great barrier reef, isopora NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Brenner, L.D. Investigator : Linsley, B.K. Investigator : Potts, D.C. 2017-06-09 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/22231 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/great_barrier/brenner2017/brenner2017-her.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/great_barrier/brenner2017/brenner2017-gbr.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/great_barrier/brenner2017/brenner2017-her.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/great_barrier/brenner2017/brenner2017-gbr.txt English https://www.ncdc.noaa.gov/paleo/study/22231 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/great_barrier/brenner2017/brenner2017-her.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/great_barrier/brenner2017/brenner2017-gbr.txt Brenner, Logan D., Braddock K. Linsley, and Donald C. Potts2017A Modern Sr/Ca-d18O-Sea Surface Temperature Calibration for Isopora corals on the Great Barrier ReefPaleoceanography322182-19410.1002/2016PA002973 START YEAR: 1971 AD * END YEAR: 2012 AD 151.92 -23.45 151.92 -23.45