Abstract
Huge tsunami will be caused by the Nankai-Trough Earthquake, and will suspend marine sediment in Osaka Bay. Various materials contain in the marine sediment, and will be released to the water column by the tsunami. The spatial distributions of concentration of heavy metals, Cd, Pb, Cr, Hg and Zn, total nitrogen and phosphorus and suspended solid in the water column after the tsunami were estimated. The environmental standards of water quality may be exceeded in the inner part of Osaka Bay in the case of the worst conditions. And the suspend matters will drift during the tsunami.
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Acknowledgements
This research was supported by Sumitomo Electric Industries Group CSR Foundation. The supercomputer of ACCMS, Kyoto University was used for the calculation. We appreciate the kind assistance of Mr. Y. Taniguchi in Kobe University, Dr. M. Sano in Osaka Prefecture and Professor T. Komai in Tohoku University.
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Hayashi, M., Nakada, S., Koshimura, S., Kobayashi, E. (2019). Estimate of Water Quality Change in Osaka Bay Caused by the Suspension of Marine Sediment with Mega Tsunami. In: Komatsu, T., Ceccaldi, HJ., Yoshida, J., Prouzet, P., Henocque, Y. (eds) Oceanography Challenges to Future Earth. Springer, Cham. https://doi.org/10.1007/978-3-030-00138-4_5
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