Chakraborty, S., and R. Ramesh. 1998. Stable isotope variations in a coral (Favia speciosa) from the Gulf of Kutch during 1948-1989 AD: Environmental implications. Proceedings of the Indian Academy of Science (Earth and Planetary Sciences) 107(4):331-341.

Sr/Ca data also available, could be used to calculate d18Osw

Finnigan MAT251 gas source mass   spectrometer with a Carousel48 automated sample preparation device

; climateInterpretation_seasonality changed  was originally monthly; archiveType changed  was originally Coral (CO)

~annual spikes in d13C assumed to take place in April, ages for depths between spikes are linearly interpolated. Chronology is constrained by density banding in xrays and growth rates.

Kiritimati (Christmas) Island Sr/Ca and isotope records 19381993

d18O (Ocean2kHR_135): interpretation4_scope: '' has been replaced by 'isotope'
d13C (Ocean2kHR_136): interpretation2_scope: '' has been replaced by 'isotope'
d13C (Ocean2kHR_136): interpretation3_scope: '' has been replaced by 'isotope'

Column 'addRE6U0tQFFvr19hv66', with variable name 'yearEnsemble', was added to the dataset
Column 'addRh8KjRdTlUdk7BKC6', with variable name 'yearEnsemble', was added to the dataset

Evans, M. N. , Fairbanks, R. G. , Rubenstone, J. L.

Evans, M. N., Fairbanks, R. G. and Rubenstone, J. L.: A proxy index of ENSO teleconnections, Nature, 394(6695), 732–733, doi:10.1038/29424, 1998.

Duplicate with Quinn 2002, Stephans 2004 for the interval 1992-1967 only. DeLong 2012 and 2013 updated the chronology for Quinn 1998, updated d18O and d13C paper is in progress. The new bottom date is 1649 and is based on cross-dating two cores and several 230Th dates. DeLong 2013 details several sections that were suboptimally sampled and replaced with new optimal sampling paths. Use this record with caution since it has changed.

For the upper part of the record (1992-1952) a calendar year was first assigned to each density-band couplet and hence to every 12 samples assuming linear subannual skeletal extension. Second, systematic variations in oxygen isotopic composition were correlated with monthly SST values by using the AnalySeties program [Paillard et al., 1996] to match the peaks and troughs in the two time series. For the lower part of the record (1657-1951), simple band counting was used to extend the chronology back to the beginning of the record, which we estimate to be 1657. Although we have no absolute dates on this coral, Crowley et al. [1997] recently demonstrated that some of the distinctive cool excursions in the mean annual record coincide within 1 year of known volcanic eruptions as determined from the volcano chronology of Sirekin and Siebert [1994] and various ice core records