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” ...

• Main Authors: Giesche, Alena, Staubwasser, Michael, Petrie, Cameron A, Hodell, David A
• Format: Dataset
• Language: unknown
• Published: Apollo - University of Cambridge Repository 2023
• Subjects: oxygen isotopes; carbon isotopes; Arabian Sea; marine core; 4.2 ka BP event; climate; Indian; Planktonic foraminifera
• Online Access: https://dx.doi.org/10.17863/cam.95037; https://www.repository.cam.ac.uk/handle/1810/347623

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 ... : This research was carried out as part of the TwoRains project, which is supported by funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement no. 648609). ...