Distributions of silicon isotopes of dissolved silicate in the surface seawater from global oceans

Ni Jianyu; Fu Feng; Wang Yuan; Yao Xuying

doi:10.12284/hyxb2021020

Volume 43 Issue 2

Mar. 2021

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Ni Jianyu，Fu Feng，Wang Yuan, et al. Distributions of silicon isotopes of dissolved silicate in the surface seawater from global oceans[J]. Haiyang Xuebao，2021, 43(2)：1–8 doi: 10.12284/hyxb2021020

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Distributions of silicon isotopes of dissolved silicate in the surface seawater from global oceans

doi: 10.12284/hyxb2021020

Key Laboratory of Submarine Geosciences, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China

Received Date: 2020-06-30
Rev Recd Date: 2020-10-21

Available Online: 2020-12-04

Publish Date: 2021-03-02

Abstract

Abstract

We analyzed δ³⁰Si of dissolved silicate of surface seawater from the Pacific Ocean, Indian Ocean and Atlantic Ocean. The results showed that the δ³⁰Si of the Pacific Ocean surface seawater was 0.45‰−2.91‰, withan average value of (1.52±0.59)‰; the δ³⁰Si of the Indian Ocean surface seawater was 0.98‰−2.30‰, with an average value of (1.52±0.36)‰; the δ³⁰Si value of the Atlantic Ocean surface seawater was 0.90‰−2.23‰, the average value was (1.55±0.35)‰. The silicon isotope in the ocean surface layer mainly shows the correlation with the ocean surface circulation and meridional overturning current, and its distribution characteristics are mainly affected by the biological activities in the surface water and the mixing between different water masses caused by the movement of the surface ocean currents. The mixing effect perhaps has a significant effect on the distribution of δ³⁰Si in the surface water of the open oceans.
- δ³⁰Si,
- surface seawater,
- dissolved silicate,
- global oceans

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References(30)

References

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