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.
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.
the Creative Commons Attribution 4.0 License.
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
CORRESPONDING AUTHOR
Micropaleontology Laboratory, Geological Oceanography Division, National Institute of Oceanography, Goa, India
Thejasino Suokhrie
Micropaleontology Laboratory, Geological Oceanography Division, National Institute of Oceanography, Goa, India
Dinesh K. Naik
Department of Geology, Banaras Hindu University, Varanasi, Uttar Pradesh, India
Dharmendra P. Singh
Department of Earth Sciences, Indian Institute of Technology–Roorkee (IIT–Roorkee), Roorkee, Uttarakhand, India
Syed M. Saalim
Antarctic Science Division, National Center for Polar and Ocean Research, Goa, India
Mohd Salman
Micropaleontology Laboratory, Geological Oceanography Division, National Institute of Oceanography, Goa, India
School of Earth, Ocean and Atmospheric Sciences, Goa University, Goa, India
Gavendra Kumar
Micropaleontology Laboratory, Geological Oceanography Division, National Institute of Oceanography, Goa, India
School of Earth, Ocean and Atmospheric Sciences, Goa University, Goa, India
Sudhira R. Bhadra
Micropaleontology Laboratory, Geological Oceanography Division, National Institute of Oceanography, Goa, India
Mahyar Mohtadi
Center for Marine Environmental Sciences (MARUM), University of Bremen, Bremen, Germany
Sujata R. Kurtarkar
Micropaleontology Laboratory, Geological Oceanography Division, National Institute of Oceanography, Goa, India
Abhayanand S. Maurya
Department of Earth Sciences, Indian Institute of Technology–Roorkee (IIT–Roorkee), Roorkee, Uttarakhand, India
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Cited
8 citations as recorded by crossref.
- Surface oceanographic changes from ∼ 25,000 to 3500 cal yr BP in the eastern Arabian Sea J. Majumder et al. 10.1016/j.gloplacha.2024.104397
- Intrusion of Arabian Sea high salinity water and monsoon-associated processes modulate planktic foraminiferal abundance and carbon burial in the southwestern Bay of Bengal M. Salman & R. Saraswat 10.1007/s11356-024-32685-4
- Progression of marine heat wave events over the tropical Indian Ocean and its underlying mechanisms D. Das & S. Mohanty 10.1016/j.dsr2.2024.105438
- Recent advancements in marine micropaleontological and paleoceanographic research from India A. Singh & P. Naidu 10.1007/s43538-024-00307-9
- Last 15 ka record of water column changes associated with Indian summer monsoon variability from the northeastern Bay of Bengal N. Gayathri et al. 10.1016/j.quaint.2025.109713
- Millennial-scale hydrographic changes in surface and intermediate waters of the western Arabian Sea over the last 135 kyr A. Kharwar et al. 10.1007/s12040-025-02527-z
- Enhanced CO2 Degassing From the Tropical Indian Ocean During Cold Climatic Events of the Last Glacial Cycle M. Tarique et al. 10.1029/2022PA004570
- Mid-Pleistocene Transition altered upper water column structure in the Bay of Bengal S. Bhadra et al. 10.1016/j.gloplacha.2023.104174
8 citations as recorded by crossref.
- Surface oceanographic changes from ∼ 25,000 to 3500 cal yr BP in the eastern Arabian Sea J. Majumder et al. 10.1016/j.gloplacha.2024.104397
- Intrusion of Arabian Sea high salinity water and monsoon-associated processes modulate planktic foraminiferal abundance and carbon burial in the southwestern Bay of Bengal M. Salman & R. Saraswat 10.1007/s11356-024-32685-4
- Progression of marine heat wave events over the tropical Indian Ocean and its underlying mechanisms D. Das & S. Mohanty 10.1016/j.dsr2.2024.105438
- Recent advancements in marine micropaleontological and paleoceanographic research from India A. Singh & P. Naidu 10.1007/s43538-024-00307-9
- Last 15 ka record of water column changes associated with Indian summer monsoon variability from the northeastern Bay of Bengal N. Gayathri et al. 10.1016/j.quaint.2025.109713
- Millennial-scale hydrographic changes in surface and intermediate waters of the western Arabian Sea over the last 135 kyr A. Kharwar et al. 10.1007/s12040-025-02527-z
- Enhanced CO2 Degassing From the Tropical Indian Ocean During Cold Climatic Events of the Last Glacial Cycle M. Tarique et al. 10.1029/2022PA004570
- Mid-Pleistocene Transition altered upper water column structure in the Bay of Bengal S. Bhadra et al. 10.1016/j.gloplacha.2023.104174
Latest update: 08 Apr 2025
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.
Much effort is made to project monsoon changes by reconstructing the past. The stable oxygen...
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