Seasonal cycle of manganese in seawater in Harima Sound |
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| Authors: | Takayuki Shiozawa Akira Hoshika Osamu Takimura Terumi Tanimoto |
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| Institution: | 1. Government Industrial Research Institute, Chugoku 15000, Hiromachi, 737-01, Kure, Japan
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| Abstract: | Vertical and horizontal distributions of manganese in Harima Sound (Harima Nada, Seto Inland Sea) were measured in August and December 1979. High concentrations of dissolved and particulate manganese were found in bottom waters in August, suggesting that the bottom enrichment is probably due to the diffusion of dissolved manganese out of the sediment. From measured distributions, we estimate the annual flux of manganese at the sediment-water interface to be more than 800 tons per year, if Harima Sound is a closed system for manganese. |
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