Sakuma Kazuyuki, Machida Masahiko, Kurikami Hiroshi, Iwata Ayako, Yamada Susumu, Iijima Kazuki
Sector of Fukushima Research and Development, Japan Atomic Energy Agency, Fukushima 963-7700, Japan.
Center for Computational Science & e-Systems, Japan Atomic Energy Agency, Chiba 277-0871, Japan.
Sci Total Environ. 2022 Feb 1;806(Pt 3):151344. doi: 10.1016/j.scitotenv.2021.151344. Epub 2021 Oct 30.
Estimation of H discharge from river catchments is important to evaluate the effect of Fukushima Dai-ichi discharge and future planned H release to the ocean on the coastal environment. Using a previously developed model based on the tank model and observed H concentration in river water, the H discharge from the Abukuma River and 13 other rivers in the Fukushima coastal region were estimated from June 2013 to March 2020. The H discharge from catchments of the Abukuma River and 13 other rivers in the Fukushima coastal region during 2014-2019 were estimated to be 1.2-4.0 TBq/y. These values were approximately 2-22 times larger than the annual H discharge from the Fukushima Dai-ichi after 2016, indicating the significance of H discharge from the catchments through the rivers. This estimation is expected to be useful to evaluate and predict H concentrations and inventories in the Fukushima coastal region for consideration of planned H release to the ocean.
估算河流集水区的氚排放量对于评估福岛第一核电站的排放以及未来计划向海洋排放的氚对沿海环境的影响至关重要。利用先前基于水箱模型和河流水体中观测到的氚浓度开发的模型，估算了2013年6月至2020年3月期间阿武隈川及福岛沿海地区其他13条河流的氚排放量。2014 - 2019年期间，阿武隈川及福岛沿海地区其他13条河流集水区的氚排放量估计为1.2 - 4.零太贝克/年。这些数值约为2016年后福岛第一核电站年氚排放量的2 - 22倍，表明通过河流从集水区排放氚的重要性。该估算结果有望用于评估和预测福岛沿海地区的氚浓度和存量，以考虑计划向海洋排放的氚。
