Russian Journal of Earth Sciences Russian Journal of Earth Sciences Russian Journal of Earth Sciences 1681-1208 89655 10.2205/2024ES000934 vqkjum ОРИГИНАЛЬНЫЕ СТАТЬИ ORIGINAL ARTICLES ОРИГИНАЛЬНЫЕ СТАТЬИ Surface Transport of Technical Waters from Fukushima NPP to the South Kuril Fishing Zone Surface Transport of Technical Waters from Fukushima NPP to the South Kuril Fishing Zone https://orcid.org/0000-0003-2291-6792 Будянский М. В. Budyansky M. V. https://orcid.org/0000-0003-4608-7781 Белоненко Татьяна Васильевна Belonenko Tatyana Vasilyevna https://orcid.org/0009-0002-2044-9625 Лебедева М. А. Lebedeva M. A. https://orcid.org/0000-0002-5250-1814 Удалов А. А. Udalov A. A. Санкт-Петербургский государственный университет St. Petersburg State University Тихоокеанский океанологический институт им. В.И. Ильичева ДВО РАН Россия V. I. Il‘ichev Pacific Oceanological Institute FEB RAS Russian Federation Тихоокеанский океанологический институт им. В.И. Ильичева Россия Il’ichev Pacific Oceanological Institute FEB RAS Russian Federation Тихоокеанский океанологический институт им. В.И. Ильичева Россия Il’ichev Pacific Oceanological Institute FEB RAS Russian Federation 26 12 2024 26 12 2024 24 4 1 17 27 05 2024 29 08 2024 https://rjes.ru/en/nauka/article/89655/view

This study explores the potential for the penetration of technical waters from the Fukushima nuclear power plant (Fukushima NPP) into the fishing areas of Russia. Using a Lagrangian approach, which examines the advection of a large number of passive markers simulating waters released from the Fukushima NPP, the typical transport pathways to the South Kuril Islands are investigated, and an estimate of the time of such transport is provided. Calculations are conducted using satellite-derived and modelled velocity fields for the test year from August 24, 2022, to August 24, 2023. This study focuses on the advection of Lagrangian markers and highlights the potential for the rapid arrival of them from the Fukushima NPP into the southern Kuril region. This article emphasizes the importance of considering the seasonal variability in Kuroshio meandering and the impact of local mesoscale vortex advection related to the propagation of Lagrangian markers from the Fukushima NPP.

This study explores the potential for the penetration of technical waters from the Fukushima nuclear power plant (Fukushima NPP) into the fishing areas of Russia. Using a Lagrangian approach, which examines the advection of a large number of passive markers simulating waters released from the Fukushima NPP, the typical transport pathways to the South Kuril Islands are investigated, and an estimate of the time of such transport is provided. Calculations are conducted using satellite-derived and modelled velocity fields for the test year from August 24, 2022, to August 24, 2023. This study focuses on the advection of Lagrangian markers and highlights the potential for the rapid arrival of them from the Fukushima NPP into the southern Kuril region. This article emphasizes the importance of considering the seasonal variability in Kuroshio meandering and the impact of local mesoscale vortex advection related to the propagation of Lagrangian markers from the Fukushima NPP.

 Fukushima nuclear power plant Lagrangian markers South Kuril region simulation simulated particles advection vortex Fukushima nuclear power plant Lagrangian markers South Kuril region simulation simulated particles advection vortex The research was carried out with the support of St. Petersburg University, grant No. 116442164. The work of M.B. and A.U. on the Lagrangian analysis of passive marker advection is supported by the Russian Science Foundation (RSF) (grant No. 23-17-00068) with the help of a high-performance computing cluster at the Pacific Oceanological Institute (State Task No. 124022100072-5). The research was carried out with the support of St. Petersburg University, grant No. 116442164. The work of M.B. and A.U. on the Lagrangian analysis of passive marker advection is supported by the Russian Science Foundation (RSF) (grant No. 23-17-00068) with the help of a high-performance computing cluster at the Pacific Oceanological Institute (State Task No. 124022100072-5).

Belonenko, T. V., D. K. Staritsyn, V. R. Foux, et al. (1997), The Origins of Oyasio, 248 pp., St. Petersburg State University, St. Petersburg (in Russian). Belonenko, T. V., D. K. Staritsyn, V. R. Foux, et al. (1997), The Origins of Oyasio, 248 pp., St. Petersburg State University, St. Petersburg (in Russian). Belonenko, T. V., V. V. Koldunov, D. K. Staritzyn, et al. (2009), Sea-sureface level variability in the North-western Pacific, 309 pp., SMIO Press, Saint-Petersburg (in Russian). Belonenko, T. V., V. V. Koldunov, D. K. Staritzyn, et al. (2009), Sea-sureface level variability in the North-western Pacific, 309 pp., SMIO Press, Saint-Petersburg (in Russian). Bezhenar, R., H. Takata, G. de With, and V. Maderich (2021), Planned release of contaminated water from the Fukushima storage tanks into the ocean: Simulation scenarios of radiological impact for aquatic biota and human from seafood consumption, Marine Pollution Bulletin, 173, 112,969, https://doi.org/10.1016/j.marpolbul.2021.112969. Bezhenar, R., H. Takata, G. de With, and V. Maderich (2021), Planned release of contaminated water from the Fukushima storage tanks into the ocean: Simulation scenarios of radiological impact for aquatic biota and human from seafood consumption, Marine Pollution Bulletin, 173, 112,969, https://doi.org/10.1016/j.marpolbul.2021.112969. Budyansky, M. V., V. A. Goryachev, D. D. Kaplunenko, et al. (2015), Role of mesoscale eddies in transport of Fukushimaderived cesium isotopes in the ocean, Deep Sea Research Part I: Oceanographic Research Papers, 96, 15–27, https://doi.org/10.1016/j.dsr.2014.09.007. Budyansky, M. V., V. A. Goryachev, D. D. Kaplunenko, et al. (2015), Role of mesoscale eddies in transport of Fukushimaderived cesium isotopes in the ocean, Deep Sea Research Part I: Oceanographic Research Papers, 96, 15–27, https://doi.org/10.1016/j.dsr.2014.09.007. Budyansky, M. V., P. A. Fayman, M. Y. Uleysky, and S. V. Prants (2022), The impact of circulation features on the dispersion of radionuclides after the nuclear submarine accident in Chazhma Bay (Japan Sea) in 1985: A retrospective Lagrangian simulation, Marine Pollution Bulletin, 177, 113,483, https://doi.org/10.1016/j.marpolbul.2022.113483. Budyansky, M. V., P. A. Fayman, M. Y. Uleysky, and S. V. Prants (2022), The impact of circulation features on the dispersion of radionuclides after the nuclear submarine accident in Chazhma Bay (Japan Sea) in 1985: A retrospective Lagrangian simulation, Marine Pollution Bulletin, 177, 113,483, https://doi.org/10.1016/j.marpolbul.2022.113483. Buslov, A. V. (Ed.) (2013), Fishing Resources Harvesting in the Waters of the Kuril Ridge: Modern Structure, Dynamics and Key Elements, 264 pp., SakhNIRO, Yuzhno-Sakhalinsk (in Russian). Buslov, A. V. (Ed.) (2013), Fishing Resources Harvesting in the Waters of the Kuril Ridge: Modern Structure, Dynamics and Key Elements, 264 pp., SakhNIRO, Yuzhno-Sakhalinsk (in Russian). CMEMS (2020), Product user manual for sea level SLA products. CMEMS-SL-PUM-008-032-062. CMEMS (2020), Product user manual for sea level SLA products. CMEMS-SL-PUM-008-032-062. Dong, D., P. Brandt, P. Chang, et al. (2017), Mesoscale Eddies in the Northwestern Pacific Ocean: Three-Dimensional Eddy Structures and Heat/Salt Transports, Journal of Geophysical Research: Oceans, 122(12), 9795–9813, https://doi.org/10.1002/2017JC013303. Dong, D., P. Brandt, P. Chang, et al. (2017), Mesoscale Eddies in the Northwestern Pacific Ocean: Three-Dimensional Eddy Structures and Heat/Salt Transports, Journal of Geophysical Research: Oceans, 122(12), 9795–9813, https://doi.org/10.1002/2017JC013303. Gnevyshev, V. G., V. S. Travkin, and T. V. Belonenko (2023), Topographic Factor and Limit Transitions in the Equations for Subinertial Waves, Fundamental and Applied Hydrophysics, 16(1), 8–23, https://doi.org/10.48612/fpg/92rg-6t7h-m4a2. Gnevyshev, V. G., V. S. Travkin, and T. V. Belonenko (2023), Topographic Factor and Limit Transitions in the Equations for Subinertial Waves, Fundamental and Applied Hydrophysics, 16(1), 8–23, https://doi.org/10.48612/fpg/92rg-6t7h-m4a2. IAEA (2018), Regulatory control of radioactive discharges to the environment, Tech. rep., International Atomic Energy Agency. IAEA (2018), Regulatory control of radioactive discharges to the environment, Tech. rep., International Atomic Energy Agency. IAEA (2023), IAEA Comprehensive Report on the Safety Review of the ALPS-Treated Water at the Fukushima Nuclear Power Station, Tech. rep., International Atomic Energy Agency. IAEA (2023), IAEA Comprehensive Report on the Safety Review of the ALPS-Treated Water at the Fukushima Nuclear Power Station, Tech. rep., International Atomic Energy Agency. Itoh, S., and I. Yasuda (2010), Water Mass Structure of Warm and Cold Anticyclonic Eddies in the Western Boundary Region of the Subarctic North Pacific, Journal of Physical Oceanography, 40(12), 2624–2642, https://doi.org/10.1175/2010JPO4475.1. Itoh, S., and I. Yasuda (2010), Water Mass Structure of Warm and Cold Anticyclonic Eddies in the Western Boundary Region of the Subarctic North Pacific, Journal of Physical Oceanography, 40(12), 2624–2642, https://doi.org/10.1175/2010JPO4475.1. Kawai, H. (2013), Hydrography of the Kuroshio Extension, in Kuroshio: Physical Aspects of the Japan Current, pp. 235–352, University of Washington Press. Kawai, H. (2013), Hydrography of the Kuroshio Extension, in Kuroshio: Physical Aspects of the Japan Current, pp. 235–352, University of Washington Press. Kawakami, Y., S. Sugimoto, and T. Suga (2015), Inter-annual zonal shift of the formation region of the lighter variety of the North Pacific Central Mode Water, Journal of Oceanography, 72(2), 225–234, https://doi.org/10.1007/s10872-015-0325-1. Kawakami, Y., S. Sugimoto, and T. Suga (2015), Inter-annual zonal shift of the formation region of the lighter variety of the North Pacific Central Mode Water, Journal of Oceanography, 72(2), 225–234, https://doi.org/10.1007/s10872-015-0325-1. Lellouche, J.-M., E. Greiner, R. Bourdallé-Badie, et al. (2021), The Copernicus Global 1/12◦ Oceanic and Sea Ice GLORYS12 Reanalysis, Frontiers in Earth Science, 9, https://doi.org/10.3389/feart.2021.698876. Lellouche, J.-M., E. Greiner, R. Bourdallé-Badie, et al. (2021), The Copernicus Global 1/12◦ Oceanic and Sea Ice GLORYS12 Reanalysis, Frontiers in Earth Science, 9, https://doi.org/10.3389/feart.2021.698876. Lu, Y., J. Yuan, D. Du, B. Sun, and X. Yi (2021), Monitoring long-term ecological impacts from release of Fukushima radiation water into ocean, Geography and Sustainability, 2(2), 95–98, https://doi.org/10.1016/j.geosus.2021.04.002. Lu, Y., J. Yuan, D. Du, B. Sun, and X. Yi (2021), Monitoring long-term ecological impacts from release of Fukushima radiation water into ocean, Geography and Sustainability, 2(2), 95–98, https://doi.org/10.1016/j.geosus.2021.04.002. Maderich, V., D. Tsumune, R. Bezhenar, and G. de With (2024), A critical review and update of modelling of treated water discharging from Fukushima Daiichi NPP, Marine Pollution Bulletin, 198, 115,901, https://doi.org/10.1016/j.marpolbul.2023.115901. Maderich, V., D. Tsumune, R. Bezhenar, and G. de With (2024), A critical review and update of modelling of treated water discharging from Fukushima Daiichi NPP, Marine Pollution Bulletin, 198, 115,901, https://doi.org/10.1016/j.marpolbul.2023.115901. Men, W. (2021), Discharge of contaminated water from the Fukushima Daiichi Nuclear Power Plant Accident into the Northwest Pacific: What is known and what needs to be known, Marine Pollution Bulletin, 173, 112,984, https://doi.org/10.1016/j.marpolbul.2021.112984. Men, W. (2021), Discharge of contaminated water from the Fukushima Daiichi Nuclear Power Plant Accident into the Northwest Pacific: What is known and what needs to be known, Marine Pollution Bulletin, 173, 112,984, https://doi.org/10.1016/j.marpolbul.2021.112984. NOAA (2013), Severe Marine Debris Event Report: Japan Tsunami Marine Debris. Overview and Update to Congress, Tech. rep., U.S. Department of Commerce. NOAA (2013), Severe Marine Debris Event Report: Japan Tsunami Marine Debris. Overview and Update to Congress, Tech. rep., U.S. Department of Commerce. Oka, E., and B. Qiu (2011), Progress of North Pacific mode water research in the past decade, Journal of Oceanography, 68(1), 5–20, https://doi.org/10.1007/s10872-011-0032-5. Oka, E., and B. Qiu (2011), Progress of North Pacific mode water research in the past decade, Journal of Oceanography, 68(1), 5–20, https://doi.org/10.1007/s10872-011-0032-5. Oka, E., S. Kouketsu, K. Toyama, et al. (2011), Formation and Subduction of Central Mode Water Based on Profiling Float Data, 2003-08, Journal of Physical Oceanography, 41(1), 113–129, https://doi.org/10.1175/2010JPO4419.1. Oka, E., S. Kouketsu, K. Toyama, et al. (2011), Formation and Subduction of Central Mode Water Based on Profiling Float Data, 2003-08, Journal of Physical Oceanography, 41(1), 113–129, https://doi.org/10.1175/2010JPO4419.1. Paraskiv, A. A., N. N. Tereshchenko, V. Y. Proskurnin, et al. (2022), Accumulation Ability of Hydrobionts and Suspended Matter in Relation to Plutonium Radioisotopes in Coastal Waters (Sevastopol Bay, the Black Sea), Vestnik Tomskogo gosudarstvennogo universiteta. Biologiya, (60), 78–101, https://doi.org/10.17223/19988591/60/5. Paraskiv, A. A., N. N. Tereshchenko, V. Y. Proskurnin, et al. (2022), Accumulation Ability of Hydrobionts and Suspended Matter in Relation to Plutonium Radioisotopes in Coastal Waters (Sevastopol Bay, the Black Sea), Vestnik Tomskogo gosudarstvennogo universiteta. Biologiya, (60), 78–101, https://doi.org/10.17223/19988591/60/5. Prants, S. V. (2014), Chaotic Lagrangian transport and mixing in the ocean, The European Physical Journal Special Topics, 223(13), 2723–2743, https://doi.org/10.1140/epjst/e2014-02288-5. Prants, S. V. (2014), Chaotic Lagrangian transport and mixing in the ocean, The European Physical Journal Special Topics, 223(13), 2723–2743, https://doi.org/10.1140/epjst/e2014-02288-5. Prants, S. V., M. V. Budyansky, and M. Y. Uleysky (2017a), Lagrangian simulation and tracking of the mesoscale eddies contaminated by Fukushima-derived radionuclides, Ocean Science, 13(3), 453–463, https://doi.org/10.5194/os-13-453-2017. Prants, S. V., M. V. Budyansky, and M. Y. Uleysky (2017a), Lagrangian simulation and tracking of the mesoscale eddies contaminated by Fukushima-derived radionuclides, Ocean Science, 13(3), 453–463, https://doi.org/10.5194/os-13-453-2017. Prants, S. V., M. V. Budyansky, and M. Y. Uleysky (2017b), Statistical analysis of Lagrangian transport of subtropical waters in the Japan Sea based on AVISO altimetry data, Nonlinear Processes in Geophysics, 24(1), 89–99, https://doi.org/10.5194/npg-24-89-2017. Prants, S. V., M. V. Budyansky, and M. Y. Uleysky (2017b), Statistical analysis of Lagrangian transport of subtropical waters in the Japan Sea based on AVISO altimetry data, Nonlinear Processes in Geophysics, 24(1), 89–99, https://doi.org/10.5194/npg-24-89-2017. Prants, S. V., M. Y. Uleysky, and M. V. Budyansky (2017c), Lagrangian Oceanography: Large-scale Transport and Mixing in the Ocean, Springer International Publishing, https://doi.org/10.1007/978-3-319-53022-2. Prants, S. V., M. Y. Uleysky, and M. V. Budyansky (2017c), Lagrangian Oceanography: Large-scale Transport and Mixing in the Ocean, Springer International Publishing, https://doi.org/10.1007/978-3-319-53022-2. Qiu, B., P. Hacker, S. Chen, et al. (2006), Observations of the Subtropical Mode Water Evolution from the Kuroshio Extension System Study, Journal of Physical Oceanography, 36(3), 457–473, https://doi.org/10.1175/JPO2849.1. Qiu, B., P. Hacker, S. Chen, et al. (2006), Observations of the Subtropical Mode Water Evolution from the Kuroshio Extension System Study, Journal of Physical Oceanography, 36(3), 457–473, https://doi.org/10.1175/JPO2849.1. Qu, T., H. Mitsudera, and B. Qiu (2001), A Climatological View of the Kuroshio/Oyashio System East of Japan, Journal of Physical Oceanography, 31(9), 2575–2589, https://doi.org/10.1175/1520-0485(2001)0312.0.CO;2. Qu, T., H. Mitsudera, and B. Qiu (2001), A Climatological View of the Kuroshio/Oyashio System East of Japan, Journal of Physical Oceanography, 31(9), 2575–2589, https://doi.org/10.1175/1520-0485(2001)0312.0.CO;2. Sekine, Y., and K. Kutsuwada (1994), Seasonal Variation in Volume Transport of the Kuroshio South of Japan, Journal of Physical Oceanography, 24(2), 261–272, https://doi.org/10.1175/1520-0485(1994)0242.0.CO;2. Sekine, Y., and K. Kutsuwada (1994), Seasonal Variation in Volume Transport of the Kuroshio South of Japan, Journal of Physical Oceanography, 24(2), 261–272, https://doi.org/10.1175/1520-0485(1994)0242.0.CO;2. Shuntov, V. P. (2022), Biology of the Far Eastern Seas of Russia, Volume 3, 445 pp., TINRO Center, Vladivostok (in Russian). Shuntov, V. P. (2022), Biology of the Far Eastern Seas of Russia, Volume 3, 445 pp., TINRO Center, Vladivostok (in Russian). Smith, J., N. Marks, and T. Irwin (2023), The risks of radioactive wastewater release, Science, 382(6666), 31–33, https://doi.org/10.1126/science.adi5446. Smith, J., N. Marks, and T. Irwin (2023), The risks of radioactive wastewater release, Science, 382(6666), 31–33, https://doi.org/10.1126/science.adi5446. Suga, T., and K. Hanawa (1995), The Subtropical Mode Water Circulation in the North Pacific, Journal of Physical Oceanography, 25(5), 958–970, https://doi.org/10.1175/1520-0485(1995)0252.0.CO;2. Suga, T., and K. Hanawa (1995), The Subtropical Mode Water Circulation in the North Pacific, Journal of Physical Oceanography, 25(5), 958–970, https://doi.org/10.1175/1520-0485(1995)0252.0.CO;2. TEPCO (2023), Partial Revision of the Application for approval to amend the Implementation Plan for Fukushima Daiichi Nuclear Power Station as Specified Nuclear Facility, Tech. rep., Tokyo Electric Power Company Holdings. TEPCO (2023), Partial Revision of the Application for approval to amend the Implementation Plan for Fukushima Daiichi Nuclear Power Station as Specified Nuclear Facility, Tech. rep., Tokyo Electric Power Company Holdings. Tomosada, A. (1986), Generation and decay of Kuroshio warm-core rings, Deep Sea Research Part A. Oceanographic Research Papers, 33(11–12), 1475–1486, https://doi.org/10.1016/0198-0149(86)90063-4. Tomosada, A. (1986), Generation and decay of Kuroshio warm-core rings, Deep Sea Research Part A. Oceanographic Research Papers, 33(11–12), 1475–1486, https://doi.org/10.1016/0198-0149(86)90063-4. Travkin, V. S., T. V. Belonenko, and A. V. Kochnev (2022), Topographic waves in the Kuril region, Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 19(5), 222–234, https://doi.org/10.21046/2070-7401-2022-19-5-222-234 (in Russian). Travkin, V. S., T. V. Belonenko, and A. V. Kochnev (2022), Topographic waves in the Kuril region, Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 19(5), 222–234, https://doi.org/10.21046/2070-7401-2022-19-5-222-234 (in Russian). Udalov, A., M. Budyansky, and S. Prants (2023), A census and properties of mesoscale Kuril eddies in the altimetry era, Deep Sea Research Part I: Oceanographic Research Papers, 200, 104,129, https://doi.org/10.1016/j.dsr.2023.104129. Udalov, A., M. Budyansky, and S. Prants (2023), A census and properties of mesoscale Kuril eddies in the altimetry era, Deep Sea Research Part I: Oceanographic Research Papers, 200, 104,129, https://doi.org/10.1016/j.dsr.2023.104129. Venti, N. L., and K. Billups (2013), Surface water hydrography of the Kuroshio Extension during the Pliocene-Pleistocene climate transition, Marine Micropaleontology, 101, 106–114, https://doi.org/10.1016/j.marmicro.2013.02.004. Venti, N. L., and K. Billups (2013), Surface water hydrography of the Kuroshio Extension during the Pliocene-Pleistocene climate transition, Marine Micropaleontology, 101, 106–114, https://doi.org/10.1016/j.marmicro.2013.02.004. Zhang, Z., H. Nakamura, and X.-H. Zhu (2021), Seasonal velocity variations over the entire Kuroshio path part II: dynamical interpretation for the current speed variation, Journal of Oceanography, 77(5), 745–761, https://doi.org/10.1007/s10872-021-00603-8. Zhang, Z., H. Nakamura, and X.-H. Zhu (2021), Seasonal velocity variations over the entire Kuroshio path part II: dynamical interpretation for the current speed variation, Journal of Oceanography, 77(5), 745–761, https://doi.org/10.1007/s10872-021-00603-8.