# 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-stm2.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: Geochem., Geophys. Geosyst., 14, # 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: STM2 Grove2013 # First_Year: 1964 # Last_Year: 2006 # Time_Unit: AD # Core_Length: 1.8 # 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 0.959217 1.91 1.833064 1965 0.9646932 1.47 1.418099 1966 0.9036431 1.47 1.328355 1967 1.0377176 1.62 1.677989 1968 0.9352991 1.47 1.37489 1969 0.8727864 1.47 1.282996 1970 0.8635328 1.76 1.523272 1971 0.8226884 1.76 1.451222 1972 0.7816365 1.62 1.263906 1973 0.7457493 1.62 1.205877 1974 0.7285229 1.18 0.856743 1975 0.6383201 1.62 1.032164 1976 0.669113 1.62 1.081956 1977 0.7434439 1.47 1.092863 1978 0.7803063 1.62 1.261755 1979 0.778509 1.18 0.915527 1980 0.9089921 1.62 1.46984 1981 0.9146303 1.47 1.344506 1982 0.9518738 1.47 1.399255 1983 0.9628224 1.32 1.273814 1984 0.9901083 1.03 1.018821 1985 0.9888318 1.18 1.162866 1986 0.9769852 1.18 1.148935 1987 1.0448675 1.32 1.38236 1988 1.0479044 1.47 1.54042 1989 1.083793 1.32 1.433858 1990 1.0933634 1.47 1.607244 1991 0.8770798 1.32 1.160377 1992 0.8985109 1.03 0.924568 1993 0.8691694 1.03 0.894375 1994 0.8660322 1.18 1.018454 1995 0.9580161 1.18 1.126627 1996 0.8350448 1.03 0.859261 1997 0.7990677 1.32 1.057167 1998 0.7685526 1.76 1.355727 1999 0.7523511 1.18 0.884765 2000 0.7632528 1.47 1.121982 2001 0.7204668 1.32 0.953178 2002 0.7326852 1.47 1.077047 2003 0.7237552 1.47 1.06392 2004 0.7395514 1.47 1.087141 2005 0.7329156 1.32 0.969647 2006 0.7468874 1.76 1.317509