noaa-coral-22951 Antongil Bay, Madagascar Stable Isotope and Trace Element Data from 1965-2007 CE Zinke, J. Antongil Bay, Madagascar Stable Isotope and Trace Element Data from 1965-2007 CE 2017-10-30 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/22951 Investigator J. Zinke 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 oxygen isotopes earth science paleoclimate corals and sclerosponges trace metals earth science paleoclimate corals and sclerosponges carbon isotopes geoscientificInformation 1965 AD 2007 AD -15 cal yr BP -57 cal yr BP Complete -15.866133 -15.509433 49.757283 50.312167 -4 -4 Ocean Indian Ocean Madagascar Antongil Bay IFAHO>LATITUDE -15.866133>LONGITUDE 50.312167 Ocean Indian Ocean Madagascar Antongil Bay ANDRA>LATITUDE -15.686167>LONGITUDE 49.956983 Ocean Indian Ocean Madagascar Antongil Bay MAS1>LATITUDE -15.509433>LONGITUDE 49.757283 Ocean Indian Ocean Madagascar Antongil Bay MAS3>LATITUDE -15.509633>LONGITUDE 49.7576 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII C.A. Grove, J. Zinke, T. Scheufen, J. Maina, E. Epping, W. Boer, B. Randriamanantsoa, and G.-J.A. Brummer 2012 Biogeosciences 9 8 3063-3081 10.5194/bg-9-3063-2012 http://www.biogeosciences.net/9/3063/2012/bg-9-3063-2012.html

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

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-mas1-iso.txt NOAA Template File; MAS1 d18O and d13C Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-ifaho-iso.txt NOAA Template File; IFAHO d18O and d13C Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-ifaho-trace.txt NOAA Template File; IFAHO Trace Element Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-mas3-iso.txt NOAA Template File; MAS3 d18O and d13C Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-mas1-trace.txt NOAA Template File; MAS1 Trace Element Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-andra-iso.txt NOAA Template File; ANDRA d18O and d13C Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/zinke2012/zinke2012-andra-trace.txt NOAA Template File; ANDRA Trace Element Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11