# St. Marie, Madagascar Coral Sr/Ca, Density, Extension and Calcification Data from 1963-2006 CE #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # NOTE: Please cite original publication, online resource and date accessed when using this data. # If there is no publication information, please cite Investigator, title, online resource and date accessed. # # Description/Documentation lines begin with # # Data lines have no # # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/24477 # Description: NOAA Landing Page # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/corals/indian_ocean/grove2013/grove2013-stm4.txt # Description: NOAA location of the template # # Original_Source_URL: # Description: # # Archive: Corals and Sclerosponges # # Dataset_DOI: # # Parameter_Keywords: trace metals, physical properties #--------------------------------------- # Contribution_Date # Date: 2018-06-25 #--------------------------------------- # File_Last_Modified_Date # Date: 2018-06-25 #--------------------------------------- # Title # Study_Name: St. Marie, Madagascar Coral Sr/Ca, Density, Extension and Calcification Data from 1963-2006 CE #--------------------------------------- # Investigators # Investigators: Grove, Craig A.; Zinke, Jens #--------------------------------------- # Description_Notes_and_Keywords # Description: Chronology based on seasonal cycles in trace elements (Sr/Ca) # Provided Keywords: corals, Sr/Ca, SST, Madagascar, Indian Ocean #--------------------------------------- # Publication # Authors: Grove, C.A., Kasper, S., Zinke, J., Pfeiffer, M., Garbe-Schönberg, D. and Brummer, G.-J.A. # Published_Date_or_Year: 2013 # Published_Title: Confounding effects of coral growth and high SST variability on skeletal Sr/Ca: Implications for coral paleothermometry # Journal_Name: Geochemistry, Geophysics, Geosystems # Volume: 14 # Edition: # Issue: # Pages: 1277-1293 # Report_Number: # DOI: 10.1002/ggge.20095 # Online_Resource: # Full_Citation: # Abstract: Massive corals offer continuous records of climate locked within their skeleton, with the most commonly applied paleo-thermometer being Sr/Ca. Recently, however, problems with Sr/Ca thermometry indicate that the intrinsic variance of single-core Sr/Ca time series differs between cores. Here, we compare the Sr/Ca records and growth parameters of two Porites lutea colonies sampled from the same reef zone, 0.72 km apart, with two gridded SST datasets, ERSST and HadISST, off NE Madagascar. Specifically, we address seasonal and interannual variability as well as trend differences between records over the same 43 year period. The two gridded SST datasets showed strong seasonality and weak positive ENSO anomalies on a slow 43 year warming trend at significantly different rates. Both the coral Sr/Ca records showed the same clear seasonality and similar amplitudes in SST. However, on interannual timescales, they displayed diverging 43 year Sr/Ca trends and opposite responses to weak ENSO anomalies. Moreover, their growth response also differed as one coral showed increasing extension/calcification rates and Sr/Ca ratios (cooling) over the 43 years, while the other coral showed decreasing extension/calcification rates and Sr/Ca ratios (warming). Further, during positive ENSO events, the calcification rates of the two corals were negatively correlated, while skeletal density anomalies were opposite. Possible explanations to why these corals are so different may be related to the corals growth response to SST changes. The growth response of individual corals to increasing SST seems to be opposite, which in turn are likely related to biological factors. Consequently, coral growth responses explain much of the inter-colony Sr/Ca variability. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: NWO Netherlands # Grant: SINDOCOM #--------------------------------------- # Site_Information # Site_Name: St. Marie # Location: Madagascar # Country: Madagascar # Northernmost_Latitude: -17.06 # Southernmost_Latitude: -17.06 # Easternmost_Longitude: 49.51 # Westernmost_Longitude: 49.51 # Elevation: -4 #--------------------------------------- # Data_Collection # Collection_Name: STM4 Grove2013 # First_Year: 1964 # Last_Year: 2006 # Time_Unit: AD # Core_Length: 4.5 # Notes: #--------------------------------------- # Chronology_Information # Chronology: # Chronology based on seasonal cycles in trace elements (Sr/Ca) #--------------------------------------- # Variables # Data variables follow that are preceded by "##" in columns one and two. # Variables list, one per line, shortname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) ## age age,,,year Common Era,,corals and sclerosponges,,,N, ## density density,Porites sp.,,gram per cubic centimeter,,corals and sclerosponges,,,N, ## ext_ann extension rate,Porites sp.,,centimeter per year,,corals and sclerosponges,,,N, ## calcif calcification rate,Porites sp.,,gram per square centimeter per year,,corals and sclerosponges,,,N, #------------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: NA age density ext_ann calcif 1964 0.641195 1.323 0.8483 1965 0.650106 1.323 0.86009 1966 0.641275 1.323 0.848407 1967 0.676327 1.617 1.093621 1968 0.675151 1.764 1.190967 1969 0.685532 1.47 1.007733 1970 0.686503 1.617 1.110075 1971 0.628613 1.47 0.924061 1972 0.63227 1.764 1.115325 1973 0.619292 1.323 0.819324 1974 0.650567 1.911 1.243233 1975 0.648261 1.911 1.238826 1976 0.652405 1.764 1.150842 1977 0.61151 1.911 1.168596 1978 0.630407 1.764 1.112038 1979 0.609881 1.911 1.165483 1980 0.627714 1.764 1.107287 1981 0.636233 1.176 0.74821 1982 0.636026 2.058 1.308941 1983 0.643372 1.617 1.040332 1984 0.685062 1.617 1.107746 1985 0.677797 1.617 1.095998 1986 0.679614 1.323 0.899129 1987 0.66513 1.47 0.977741 1988 0.629838 1.47 0.925862 1989 0.616759 1.617 0.997299 1990 0.650697 1.764 1.14783 1991 0.666916 1.911 1.274476 1992 0.655199 2.058 1.348399 1993 0.665734 2.058 1.37008 1994 0.667311 1.911 1.275231 1995 0.647561 1.911 1.237489 1996 0.659605 2.205 1.45443 1997 0.662105 1.764 1.167954 1998 0.64705 1.911 1.236513 1999 0.623388 1.764 1.099657 2000 0.611466 1.911 1.168511 2001 0.574861 1.764 1.014055 2002 0.611738 2.352 1.438808 2003 0.632061 2.205 1.393695 2004 0.640819 2.352 1.507207 2005 0.641552 2.352 1.508931 2006 0.64449 2.793 1.800061