Antongil Bay, Madagascar Stable Isotope and Trace Element Data from 1965-2007 CE Zinke, J. Zinke, J. earth science/paleoclimate/corals and sclerosponges (uranium/calcium,Porites sp.,null,millimole per mole,null,corals and sclerosponges,interpolated,inductively-coupled plasma atomic emission spectroscopy,N,interpolated linearly to monthly time steps) 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 (yttrium/calcium,Porites sp.,null,millimole per mole,null,corals and sclerosponges,interpolated,inductively-coupled plasma atomic emission spectroscopy,N,interpolated linearly to monthly time steps) earth science/paleoclimate/corals and sclerosponges (barium/calcium,Porites sp.,null,micromole per mole,null,corals and sclerosponges,interpolated,inductively-coupled plasma atomic emission spectroscopy,N,interpolated linearly to monthly time steps) earth science/paleoclimate/corals and sclerosponges (magnesium/calcium,Porites sp.,null,millimole per mole,null,corals and sclerosponges,interpolated,inductively-coupled plasma atomic emission spectroscopy,N,interpolated linearly to monthly time steps) earth science/paleoclimate/corals and sclerosponges (lead/calcium,Porites sp.,null,millimole per mole,null,corals and sclerosponges,interpolated,inductively-coupled plasma atomic emission spectroscopy,N,interpolated linearly to monthly time steps) earth science/paleoclimate/corals and sclerosponges (delta 13C,Porites sp.,null,per mil PDB,null,corals and sclerosponges,interpolated,isotope ratio mass spectrometry,N,interpolated linearly to monthly time steps) earth science/paleoclimate/corals and sclerosponges (delta 18O,Porites sp.,null,per mil PDB,null,corals and sclerosponges,interpolated,isotope ratio mass spectrometry,N,interpolated linearly to monthly time steps) earth science/paleoclimate/corals and sclerosponges (manganese/calcium,Porites sp.,null,millimole per mole,null,corals and sclerosponges,interpolated,inductively-coupled plasma atomic emission spectroscopy,N,interpolated linearly to monthly time steps) earth science/paleoclimate/corals and sclerosponges earth science/paleoclimate/corals and sclerosponges earth science/paleoclimate/corals and sclerosponges (Antongil Bay IFAHO>LATITUDE -15.866133>LONGITUDE 50.312167) (Antongil Bay ANDRA>LATITUDE -15.686167>LONGITUDE 49.956983) (Antongil Bay MAS1>LATITUDE -15.509433>LONGITUDE 49.757283) (Antongil Bay MAS3>LATITUDE -15.509633>LONGITUDE 49.7576) Coral cores provide vital climate reconstructions for site-specific temporal variability in river flow and sediment load. Yet, their ability to record spatial differences across multiple catchments is relatively unknown. Here, we investigate spatial linkages between four coral proxies of terrestrial runoff and their relationships between sites. Coral cores were drilled in and around Antongil Bay, the largest bay in Madagascar, and individually analysed for fifteen years of continuous luminescence (G/B), Ba/Ca, d18Osw and d13C data. Each coral core was drilled close to individual river mouths (>= 7 km), and proxy data were compared to modelled river discharge and sediment runoff data for the three corresponding catchments. A reasonable agreement between terrestrial runoff proxies with modelled river discharge and sediment yield was observed. Some inconsistencies between proxy and modelled data are likely linked to proxy behaviour, watershed size and local environmental physiochemical parameters. In general, the further a coral resided from its river source, the weaker the proxy relationship was with modelled data and other corals, due to mixing gradients and currents. Nevertheless, we demonstrate that two coral Ba/Ca and luminescence (G/B) records influenced by the same watershed are reproducible. Furthermore, a strong Ba/Ca relationship was observed between two cores from distant watersheds, with baseline averages in agreement with modelled sediment runoff data. As humic acids behave conservatively in the water column, luminescence (G/B) data gave the highest regional correlations between cores, and showed the most consistent relationship with site specific modelled discharge. No statistical relationship was observed between cores in terms of interannual d18Osw and d13C, meaning corals were recording a localised signal at their respective sites, confounded by vital effects. Comparing proxy baseline averages and mean seasonal cycles provided a good overview of the runoff dynamics of the bay system. STUDY NOTES: Chronologies based on seasonal cycles in stable isotopes Provided Keywords: corals, stable isotopes, Madagascar, Indian Ocean NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Zinke, J. 2017-10-30 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/22951 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-mas1-iso.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-ifaho-iso.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-ifaho-trace.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-mas3-iso.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-mas1-trace.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-andra-iso.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-andra-trace.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-mas1-iso.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-ifaho-iso.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-ifaho-trace.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-mas3-iso.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-mas1-trace.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-andra-iso.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-andra-trace.txt English https://www.ncdc.noaa.gov/paleo/study/22951 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-mas1-iso.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-ifaho-iso.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-ifaho-trace.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-mas3-iso.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-mas1-trace.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-andra-iso.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-andra-trace.txt C.A. Grove, J. Zinke, T. Scheufen, J. Maina, E. Epping, W. Boer, B. Randriamanantsoa, and G.-J.A. Brummer2012Spatial linkages between coral proxies of terrestrial runoff across a large embayment in MadagascarBiogeosciences983063-308110.5194/bg-9-3063-2012http://www.biogeosciences.net/9/3063/2012/bg-9-3063-2012.html START YEAR: 1965 AD * END YEAR: 2007 AD 49.757283 -15.866133 50.312167 -15.509433