Research data supporting Giesche et al., 2019 “Indian winter and summer monsoon strength over the 4.2 ka BP event in foraminifer isotope records from the Indus River delta in the Arabian Sea”

The oxygen and carbon isotope record of the planktonic foraminifera in marine core 63KA in the northeast Arabian Sea provides evidence for an abrupt decrease in rainfall and reduction in Indus River discharge at 4.2 ka. We measure the oxygen and carbon isotope profiles of two thermocline-dwelling foraminifer species at decadal resolution over the interval from 5.4 to 3.0 ka. By selecting both thermocline-dwelling (Neogloboquadrina dutertrei) and shallow-dwelling (Globigerinoides sacculifer) species, we provide enhanced detail of the climatic changes that occurred over this crucial time interval. We also replicate a larger size fraction of G. ruber than measured previously by Staubwasser et al., 2003 (https://doi.org/10.1029/2002GL016822). $$ \ $$ The .xlsx file contains two sheets relating to measurements made from the 63KA marine core. $$ \ $$ The first sheet features oxygen stable isotope data from G. ruber 400-500um, G. sacculifer 315-400um, and N. dutertrei 315-400um. It also includes G. ruber 315-400um (Staubwasser et al., 2003). An age model was generated using radiocarbon dates from Staubwasser et al., 2003, and the BACON Bayesian age modelling software (Blaauw and Christen, 2011, https://doi.org/10.1214/11-BA618). $$ \ $$ The second sheet features carbon stable isotope data for the same species and size ranges of foraminifera as listed for the oxygen data on the first sheet. $$ \ $$ The data is additionally available at http://eprints.esc.cam.ac.uk/4371/.