Transport of radioactive waste along the Sellafield shoreline: climate change impact and mitigation strategies through nature-based solutions

将使用海岸建模软件德尔夫特-3D，研究波浪、风暴和海平面上升对更广泛的塞拉菲尔德海岸线的海岸侵蚀和沉积物迁移的相关性。将评估可能造成受放射性核素污染的沉积物物理再流动和迁移的洪水风险。评估不同风暴强度和频率以及各种海平面上升情景对泥滩和海岸线沉积物再活化的贡献。将进行实地测量和取芯，以根据风、波浪和潮流的相对暴露程度评估污染物的空间分布。实地研究将验证数值模型产生的数据。这些数据将用于调查再利用遗留废物对环境的影响。塞拉菲尔德图形打印放射性核素沿着塞拉菲尔德海岸的运动是主要的兴趣，以及这一过程将如何受到未来气候变化的影响。将对数值模型进行调整，以包括不同的衰变率，以说明不同的放射性元素。该模型将用于评估基于自然的解决方案的有效性，例如种植芦苇床以促进污染物的生物累积，从而从土壤中清除放射性核素。这将为利益攸关方探索不同的管理备选方案提供一个工具。

Using the coastal modelling software Delft-3D, the relevance of waves, storms and sea-level rise on coastal erosion and sediment transport for the wider Sellafield shoreline will be examined. The risk of flooding potentially causing physical remobilization and transport of sediments contaminated by radionuclides will be assessed. Evaluating the contribution of different storms intensities, and frequency, as well as various sea level rise scenarios to the remobilization of mudflat and shoreline sediments. Field measurements and coring will be carried out to evaluate the spatial distribution of contaminants depending on the relative exposure to wind, waves, and tidal currents. The field studies will validate the data the numerical model produces. This data will be used to investigate the effect of remobilized legacy waste on the environment. The movement of Sellafield figure print radionuclides along the Sellafield coast is of primary interest, as well as how this process will be affected by future climate change. The numerical model will be adapted to include different decay rates to account for different radioactive elements. The model will be used to assess the effectiveness of nature-based solutions, for example the planting of reed beds for contaminant bioaccumulation, thus removing the radionuclides from the soil. This will provide a tool for stakeholders to explore different management options.