Articles | Volume 45, issue 2
https://doi.org/10.5194/jm-45-699-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/jm-45-699-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
08 Oct 2026
Research article |
| 08 Oct 2026
| 08 Oct 2026
Biological pump variations in the northeastern Indian Ocean since the last glaciation: evidence from coccolithophores
Nilufar Yasmin Liza
State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 511458, China
Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 511458, China
University of Chinese Academy of Sciences, Beijing 100049, China
Xiang Su
CORRESPONDING AUTHOR
State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 511458, China
Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 511458, China
Chuanxiu Luo
State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 511458, China
Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 511458, China
Lanlan Zhang
State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 511458, China
Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 511458, China
Sui Wan
State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 511458, China
Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 511458, China
Rong Xiang
State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 511458, China
Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 511458, China
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Xudong Xu, Jianguo Liu, Yun Huang, Lanlan Zhang, Liang Yi, Shengfa Liu, Yiping Yang, Li Cao, and Long Tan
Clim. Past, 18, 1369–1384, https://doi.org/10.5194/cp-18-1369-2022, https://doi.org/10.5194/cp-18-1369-2022, 2022
Short summary
Short summary
Terrestrial materials in marine environments record source information and help us understand how climate and ocean impact sediment compositions. Here, we use evidence on the Ninetyeast Ridge to analyze the relationship between terrestrial material supplementation and climatic change. We find that the ITCZ controlled the rainfall in the Burman source area and that closer connections occurred between the Northern–Southern Hemisphere in the eastern Indian Ocean during the late LGM.
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Short summary
The biological pump is a key part of Earth's carbon cycle. It moves carbon from the air into the deep ocean by carrying organic matter from the sea surface down to the seafloor. By analyzing coccoliths from the sediment core in the northeastern Indian Ocean, we discovered that biological pump was weakest during the last ice age but strengthened significantly as the climate warmed. We found that freshwater from monsoon rains is the primary factor controlling primary productivity in this region.
The biological pump is a key part of Earth's carbon cycle. It moves carbon from the air into the...
