Okinawa 10 Year Coral Bleaching Stable Isotope Data Rosenfeld, M.; Shemesh, A.; Yam, R.; Sakai, K.; Loya, Y. Rosenfeld, M. Shemesh, A. Yam, R. Sakai, K. Loya, Y. PAGES 2k Network PAGES Ocean 2k 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 (delta 13C,Porites sp.,null,per mil VPDB,null,corals and sclerosponges,interpolated,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/corals and sclerosponges (delta 18O,Porites sp.,null,per mil VPDB,null,corals and sclerosponges,interpolated,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/corals and sclerosponges earth science/paleoclimate/corals and sclerosponges (Sesoko Island>LATITUDE 26.6333>LONGITUDE 127.8667) Oxygen isotope compositions of Porites sp. were measured in order to examine the effect of the 1998 bleaching event on the skeletal record of 6 neighboring colonies from Sesoko Island, Okinawa, Japan. A d18Oc-SST dependency of 0.18‰/°C was calculated using a 10 yr record, well within accepted calibrations. The skeleton portion accreted during 1998 exhibited 0.3‰ enrichment in d18O, which differs from the depleted values expected during abnormally high SST conditions. Growth rate changed significantly during the bleaching event, and its manifestation in skeletal d18O masked the temperature signal. The d18O variance among the 6 colonies was noticeably higher during 1998 in comparison with 1997 and 1999. A residual analysis revealed that 75% of the inter-annual variation of the d18O record is explained by variation in annual extension rate. The increase in d18O variance is proposed as a novel indicator for stressful environmental conditions. STUDY NOTES: Coral stable isotope (d18O and d13C) data at sub-monthly resolution from 6 corals collected near Sesoko Island, Okinawa, Japan. Data span the 1998 bleaching event. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Rosenfeld, M. Investigator : Shemesh, A. Investigator : Yam, R. Investigator : Sakai, K. Investigator : Loya, Y. 2012-03-27 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/12883 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/okinawa2006.xls https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/okinawa2006.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/okinawa2006.xls https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/okinawa2006.txt English https://www.ncdc.noaa.gov/paleo/study/12883 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/okinawa2006.xls https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/okinawa2006.txt Rosenfeld, M., A. Shemesh, R. Yam, K. Sakai, and Y. Loya. 2006. Impact of the 1998 bleaching event on d18O records of Okinawa corals. Marine Ecology Progress Series, Vol. 314, pp. 127-133. doi:10.3354/meps314127 http://www.int-res.com/abstracts/meps/v314/p127-133/ START YEAR: 1997 AD * END YEAR: 2000 AD 127.8667 26.6333 127.8667 26.6333