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Ba/Ca in foraminifera shells as a proxy of submarine groundwater discharge .
- Source :
-
Limnology & Oceanography Letters . Jun2023, Vol. 8 Issue 3, p490-497. 8p. - Publication Year :
- 2023
-
Abstract
- Submarine groundwater discharge (SGD) can have a profound influence on marine environments and elemental biogeochemical cycles in coastal waters. We have explored the feasibility of using Ba/Ca ratios of benthic foraminiferal shells as a proxy of SGD. Dissolved barium (DBa) displayed enrichment behavior in bottom waters indicating that SGD is a major DBa source in the Changjiang (Yangtze) Estuary. Foraminifera that lived in bottom waters with elevated 222Rn activities (high SGD) showed a larger range of Ba/Ca ratios than those that lived under low bottom water 222Rn activities (low SGD). Our findings support the view that benthic foraminiferal Ba/Ca ratios could be treated as a qualitative proxy of SGD. We propose that in areas where SGD is the main source of DBa, foraminiferal Ba/Ca ratios could be applied for long-term historical SGD records. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- Volume :
- 8
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Limnology & Oceanography Letters
- Publication Type :
- Academic Journal
- Accession number :
- 169933637
- Full Text :
- https://doi.org/10.1002/lol2.10290