Seasonal Galapagos coral D14C, d18O and d13C values from 1602-1835 AD Druffel, E.R.M.; Griffin, S.M.; Vetter, D.; Dunbar, R.B.; Mucciarone, D.M. Druffel, E.R.M. Griffin, S.M. Vetter, D. Dunbar, R.B. Mucciarone, D.M. earth science/paleoclimate/corals and sclerosponges (Delta 14C,Pavona clavus,null,per mil NBS oxalic acid,null,corals and sclerosponges,corrected,accelerator mass spectrometry,N,corrected for known age to 1950 AD (Stuiver and Polack 1977)) earth science/paleoclimate/corals and sclerosponges (delta 18O,Pavona clavus,null,per mil VPDB,null,corals and sclerosponges,raw,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/corals and sclerosponges (delta 13C,Pavona clavus,null,per mil VPDB,null,corals and sclerosponges,raw,isotope ratio mass spectrometry,N,null) 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 14C,Pavona clavus,null,per mil NBS oxalic acid,null,corals and sclerosponges,corrected,accelerator mass spectrometry,N,warm season; corrected for known age to 1950 AD (Stuiver and Polack 1977)) earth science/paleoclimate/corals and sclerosponges (Delta 14C,Pavona clavus,null,per mil NBS oxalic acid,null,corals and sclerosponges,corrected,accelerator mass spectrometry,N,cool season; corrected for known age to 1950 AD (Stuiver and Polack 1977)) earth science/paleoclimate/corals and sclerosponges (delta 18O,Pavona clavus,null,per mil VPDB,null,corals and sclerosponges,raw,isotope ratio mass spectrometry,N,cool season) earth science/paleoclimate/corals and sclerosponges (delta 18O,Pavona clavus,null,per mil VPDB,null,corals and sclerosponges,raw,isotope ratio mass spectrometry,N,warm season) earth science/paleoclimate/corals and sclerosponges earth science/paleoclimate/corals and sclerosponges (Urvina Bay>LATITUDE -.25>LONGITUDE -91.367) We report measurements of near monthly D14C and d18O during selected decades from an east equatorial Pacific coral that grew during the past four centuries. We find that El Niño events occurred regularly during the late 1700s. During the early 1800s, El Niño events occurred less often, and La Niña conditions prevailed, which were accompanied by unprecedented, low cool season D14C values and high cool season d18O values. These results indicate that shallow overturning water (e.g., Central Mode Water) from the North Pacific was likely an important source of water to the Galapagos area during the early 1800s. STUDY NOTES: Near-monthly measurements of D14C, d18O and d13C in the UR-18 coral collected from Urvina Bay in 1986. Precision on National Institute of Standards and Technology Standard Reference Materials 8544 and internal laboratory standards is better than 0.06‰ and 0.03‰ for d18O and d13C, respectively. Total uncertainty of D14C measurements was ±1.4‰. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Druffel, E.R.M. Investigator : Griffin, S.M. Investigator : Vetter, D. Investigator : Dunbar, R.B. Investigator : Mucciarone, D.M. 2015-03-17 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/18255 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/east_pacific/druffel2015/druffel2015.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/east_pacific/druffel2015/druffel2015.txt English https://www.ncdc.noaa.gov/paleo/study/18255 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/east_pacific/druffel2015/druffel2015.txt Druffel, E.R.M., S. Griffin, D. Vetter, R.B. Dunbar, and D.M. Mucciarone2015Identification of frequent La Niña events during the early 1800s in the east equatorial PacificGeophysical Research Letters4210.1002/2014GL062997 START YEAR: 1602 AD * END YEAR: 1835 AD -91.367 -.25 -91.367 -.25