# Southern Great Barrier Reef Coral Radiocarbon Data #----------------------------------------------------------------------- # World Data Center for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. # If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. # # Online_Resource: https://www.ncdc.noaa.gov/study/1911 # # Original_Source_URL: http://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/abraham1999.txt # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Corals and Sclerosponges #-------------------- # Contribution_Date # Date: 2004-12-01 #-------------------- # Title # Study_Name: Abraham Reef, Heron Island - Radiocarbon and Stable Isotope Annual Data #-------------------- # Investigators # Investigators: Druffel, E.R.M.; Griffin, S. #-------------------- # Description_and_Notes # Description: #-------------------- # Publication # Authors: Druffel, E.R.M.; Griffin, S. # Published_Date_or_Year: 1999 # Published_Title: Variability of surface ocean radiocarbon and stable isotopes in the southwestern Pacific. # Journal_Name: Journal of Geophysical Research - Ocean # Volume: 104 # Edition: # Issue: C10 # Pages: 23, 607-613 # DOI: # Online_Resource: # Full_Citation: Druffel, E.R.M. and S. Griffin. 1999. Variability of surface ocean radiocarbon and stable isotopes in the southwestern Pacific. Journal of Geophysical Research - Ocean v.104 (C10) pp. 23,607-613. # Abstract: We present high-precision radiocarbon (D14C) results and stable isotope (d18O and d13C) records for a coral from Heron Island (23�S, 152�E) and new stable isotope (d18O and d13C) records for annual coral bands from Abraham Reef (22�S, 153�E) in the southern Great Barrier Reef studied earlier [Druffel and Griffin, 1993]. These tracers provide unique information on the regional water mass history, and together these data allow us to constrain the variability of circulation in the upper Pacific over the past four centuries. First, we observe decreases in d18O of coral from Abraham Reef and Heron Island, indicating an increase in sea surface temperature and/or a decrease in surface salinity since 1850. Second, the small Suess effect value (D14C decrease from 1880 to 1955, due mostly to fossil fuel CO2) observed previously at Abraham Reef [Druffel and Griffin, 1993] is confirmed in the measurements reported here from the Heron Island coral. This value is low compared to those observed in other areas of the ocean [Druffel, 1997; Druffel and Linick, 1978; Nozaki et al., 1978] between 1880 and 1955. Third, we report alterations in the correlation between El Nino events and the occurrence of low D14C, which is indicative of long-term change(s) in circulation in the SW Pacific. The D14C shifts reported here are not large, but even small temporal changes in prebomb D14C suggest that important changes in the large-scale state of the ocean have occurred, such as a temporal change in circulation. #-------------------- # Publication # Authors: Druffel, E.R.M.; Griffin, S. # Published_Date_or_Year: 1995 # Published_Title: Regional variability of surface ocean radiocarbon from southern great barrier reef corals. # Journal_Name: Radiocarbon # Volume: 37 # Edition: # Issue: # Pages: 517-524 # DOI: # Online_Resource: # Full_Citation: Druffel, E.R.M. and S. Griffin. 1995. Regional variability of surface ocean radiocarbon from southern great barrier reef corals. Radiocarbon 37:517-524. # Abstract: #-------------------- # Publication # Authors: Druffel, E.R.M.; Griffin, S. # Published_Date_or_Year: 1993 # Published_Title: Large Variations of Surface Ocean Radiocarbon: Evidence of Circulation Changes in the Southwestern pacific. # Journal_Name: Journal of Geophysical Research # Volume: 98 # Edition: # Issue: C11 # Pages: 20, 249, 259 # DOI: # Online_Resource: # Full_Citation: Druffel, E.R.M. and S. Griffin. 1993. Large Variations of Surface Ocean Radiocarbon: Evidence of Circulation Changes in the Southwestern pacific. Journal of Geophysical Research, Vol.98, NO.C11, pg20,249-20,259. # Abstract: #------------------ # Funding_Agency # Funding_Agency_Name: # Grant: #------------------ # Site_Information # Site_Name: Abraham Reef, Great Barrier Reef, Australia # Location: Australia/New Zealand>Australia # Country: Australia # Northernmost_Latitude: -22.1 # Southernmost_Latitude: -22.1 # Easternmost_Longitude: 153.0 # Westernmost_Longitude: 153.0 # Elevation: -10 m #------------------ # Data_Collection # Collection_Name: 99aust02b # Earliest_Year: 1967 # Most_Recent_Year: 1991 # Time_Unit: AD # Core_Length: # Notes: Abraham 2 coll. May 1991 by Druffel #------------------ # Species # Species_Name: Porites australiensis # Common_Name: #------------------ # Chronology_Information # Chronology: # #---------------- # Variables # # Data variables follow that are preceded by "##" in columns one and two. # Data line variables format: Variables list, one per line, shortname-tab-longname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) # ##id sample identification, , , , , , , , C ##age age, , ,years AD, , , , ,N ##d14C delta 14C, Porites australiensis, , permil, , Corals and Sclerosponges, , ,N # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: NAN # id age d14C 1367 1967.3 67.8 1375 1968.3 93.3 1370 1970.3 101.5 1357 1972.3 112.5 1306 1973.3 105.3 1372 1974.3 123.1 1377 1975.3 124.6 1373 1976.3 136.1 1376 1977.3 124 1365 1984.3 126.1 1359 1985.3 128.1 1374 1986.3 125.8 1369 1987.3 130.4 1368 1988.3 119.4 1371 1989.3 119.2 1358 1990.3 122 1366 1991.1 109