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Understanding the Compositional Variability of the Major Components of Hydrothermal Plumes in the Okinawa Trough
Joint Authors
Zeng, Zhigang
Wang, Xiaoyuan
Chen, Chen-Tung Arthur
Qi, Haiyan
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-20, 20 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-04-04
Country of Publication
Egypt
No. of Pages
20
Main Subjects
Abstract EN
Studies of the major components of hydrothermal plumes in seafloor hydrothermal fields are critical for an improved understanding of biogeochemical cycles and the large-scale distribution of elements in the submarine environment.
The composition of major components in hydrothermal plume water column samples from 25 stations has been investigated in the middle and southern Okinawa Trough.
The physical and chemical properties of hydrothermal plume water in the Okinawa Trough have been affected by input of the Kuroshio current, and its influence on hydrothermal plume water from the southern Okinawa Trough to the middle Okinawa Trough is reduced.
The anomalous layers of seawater in the hydrothermal plume water columns have higher K+, Ca2+, Mn2+, B3+, Ca2+/SO42-, and Mn2+/Mg2+ ratios and higher optical anomalies than other layers.
The Mg2+, SO42-, Mg2+/Ca2+, and SO42-/Mn2+ ratios of the anomalous layers are lower than other layers in the hydrothermal plume water columns and are consistent with concentrations in hydrothermal vent fluids in the Okinawa Trough.
This suggests that the chemical variations of hydrothermal plumes in the Tangyin hydrothermal field, like other hydrothermal fields, result in the discharge of high K+, Ca2+, and B3+ and low Mg2+ and SO42- fluid.
Furthermore, element ratios (e.g., Sr2+/Ca2+, Ca2+/Cl−) in hydrothermal plume water columns were found to be similar to those in average seawater, indicating that Sr2+/Ca2+ and Ca2+/Cl− ratios of hydrothermal plumes might be useful proxies for chemical properties of seawater.
The hydrothermal K+, Ca2+, Mn2+, and B3+ flux to seawater in the Okinawa Trough is about 2.62–873, 1.04–326, 1.30–76.4, and 0.293–34.7 × 106 kg per year, respectively.
The heat flux is about 0.159–1,973 × 105 W, which means that roughly 0.0006% of ocean heat is supplied by seafloor hydrothermal plumes in the Okinawa Trough.
American Psychological Association (APA)
Zeng, Zhigang& Wang, Xiaoyuan& Chen, Chen-Tung Arthur& Qi, Haiyan. 2018. Understanding the Compositional Variability of the Major Components of Hydrothermal Plumes in the Okinawa Trough. Geofluids،Vol. 2018, no. 2018, pp.1-20.
https://search.emarefa.net/detail/BIM-1157181
Modern Language Association (MLA)
Zeng, Zhigang…[et al.]. Understanding the Compositional Variability of the Major Components of Hydrothermal Plumes in the Okinawa Trough. Geofluids No. 2018 (2018), pp.1-20.
https://search.emarefa.net/detail/BIM-1157181
American Medical Association (AMA)
Zeng, Zhigang& Wang, Xiaoyuan& Chen, Chen-Tung Arthur& Qi, Haiyan. Understanding the Compositional Variability of the Major Components of Hydrothermal Plumes in the Okinawa Trough. Geofluids. 2018. Vol. 2018, no. 2018, pp.1-20.
https://search.emarefa.net/detail/BIM-1157181
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1157181