Large freshwater-influx-induced salinity gradient and diagenetic changes in the northern Indian Ocean dominate the stable oxygen isotopic variation in <i>Globigerinoides ruber</i>

Saraswat, Rajeev; Suokhrie, Thejasino; Naik, Dinesh K.; Singh, Dharmendra P.; Saalim, Syed M.; Salman, Mohd; Kumar, Gavendra; Bhadra, Sudhira R.; Mohtadi, Mahyar; Kurtarkar, Sujata R.; Maurya, Abhayanand S.

doi:https://doi.org/10.5194/essd-15-171-2023

Articles | Volume 15, issue 1

https://doi.org/10.5194/essd-15-171-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/essd-15-171-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 15, issue 1

Data description paper

|

10 Jan 2023

Data description paper |

| 10 Jan 2023

Large freshwater-influx-induced salinity gradient and diagenetic changes in the northern Indian Ocean dominate the stable oxygen isotopic variation in Globigerinoides ruber

Rajeev Saraswat, Thejasino Suokhrie, Dinesh K. Naik, Dharmendra P. Singh, Syed M. Saalim, Mohd Salman, Gavendra Kumar, Sudhira R. Bhadra, Mahyar Mohtadi, Sujata R. Kurtarkar, and Abhayanand S. Maurya

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https://doi.org/10.5194/essd-15-171-2023-supplement

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Oxygen isotopic ratio of Globigerinoides ruber (white variety) in the surface sediments of the northern Indian Ocean Rajeev Saraswat, T. Suokhrie, Dinesh Kumar Naik, Dharmendra Pratap Singh, S. M. Saalim, M. Salman, G. Kumar, S. R. Bhadra, Mahyar Mohtadi, S. R. Kurtarkar, and A. S. Maurya https://www.pangaea.de/tok/59190adf9e4facf7ebb9ad555c0bce58a9a72bd9

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Short summary

Much effort is made to project monsoon changes by reconstructing the past. The stable oxygen isotopic ratio of marine calcareous organisms is frequently used to reconstruct past monsoons. Here, we use the published and new stable oxygen isotopic data to demonstrate a diagenetic effect and a strong salinity influence on the oxygen isotopic ratio of foraminifera in the northern Indian Ocean. We also provide updated calibration equations to deduce monsoons from the oxygen isotopic ratio.