Geofluids

Research Article

Understanding the Compositional Variability of the Major Components of Hydrothermal Plumes in the Okinawa Trough

Table 3

Flux of hydrothermal heat, K+, Ca2+, Mn2+, B3+, Mg2+, and to seawater in the middle and southern Okinawa Trough.
Heat flux, station numberK+ flux, station numberCa2+ flux, station numberMn2+ flux, station No.B3+ flux, station numberMg2+ flux, station number flux, station number
Iheya North knoll hydrothermal field
4.08–69.8, 2W10––––––
23.2, 2W92.21 × 10−6, 2W926.9 × 10−6, 2W9––−2.09–−18.1 × 10−6, 2W9–
7.80–28.8, 2W819.2–83.6 × 10−6, 2W81.12 × 10−6, 2W8–0.124–0.294 × 10−6, 2W8–−1.03 × 10−5, 2W8
28.6–95.7, 2W21.61–17.2 × 10−6, 2W22.12 × 10−6, 2W2––−11.1 × 10−6, 2W2–
5.62, 2W112.38 × 10−6, 2W11–––−3.16–−25.8 × 10−6, 2W11−4.38–−15.4 × 10−6, 2W11
14.2–250, 2W35.36–99.6 × 10−6, 2W34.01 × 10−6, 2W3––––
14.7–1890, 2W1322.5–112 × 10−6, 2W1313.9–101 × 10−6, 2W13––––
–5.40–21.8 × 10−6, 2W12–––−22.2–−79.2 × 10−6, 2W12–
Clam hydrothermal field
0.330–5.24, 2W213.47–10.1 × 10−6, 2W210.441 × 10−6, 2W21––−1.19 × 10−6, 2W21−5.82–−63.9 × 10−7, 2W21
0.212–50.0, 2W187.18–30.7 × 10−6, 2W18–––– 
6.68–78.4, 2W1626.4–95.5 × 10−6, 2W16–0.115–1.06 × 10−9, 2W161.83–4.99 × 10−6, 2W16– 
11.6–747, 2W1429.0–207 × 10−6, 2W140.842–62.9 × 10−6, 2W14––– 
–2.14–75.4 × 10−6, 2W200.641–2.24 × 10−6, 2W20–––−2.05–−11.2 × 10−6, 2W20
Yonaguni Knoll IV hydrothermal field
30.8–131, 3W971.1–369 × 10−6, 3W945.3–138 × 10−6, 3W95.16–19.8 × 10−9, 3W96.09–12.1 × 10−6, 3W9−16.7–−136 × 10−6, 3W9–
18.9–2631, 3W7204–275 × 10−6, 3W7–1.21–10.1 × 10−9, 3W75.23–12.6 × 10−6, 3W7–−1.76–−3.80 × 10−5, 3W7
65.8, 3W867.2–200 × 10−6, 3W8–0.549–32.3 × 10−9, 3W85.92–14.7 × 10−6, 3W8–−3.25–−4.56 × 10−5, 3W8
Tangyin hydrothermal field
2.49–110, 3W12.81–124 × 10−6, 3W118.6–41.3 × 10−6, 3W1––−11.5–−24.6 × 10−6, 3W1−1.16–−21.5 × 10−6, 3W1
0.495, 3W294.1–208 × 10−6, 3W2–––−17.3 × 10−6, 3W2−1.54–−2.28 × 10−5, 3W2
7.05–190, 3W51.11–6.25 × 10−6, 3W5–––−12.7–−158 × 10−6, 3W5−5.55–−17.2 × 10−6, 3W5
–44.4–118 × 10−6, 3W2′–––−4.49–−20.2 × 10−6, 3W2′−7.05–−21.0 × 10−6, 3W2′
Unit J m−2 s−1 for heat flux; kg m−2 s−1 for K+, Ca2+, Mn2+, B3+, Mg2+, and flux. “–”: no data.