This study systematically compares and evaluates three methods for calculating the dispersion trajectories of marine nuclear pollutants:the Maximum Concentration Method,the Geometric Center Method,and the Centroid Trajectory Method.The research is based on a three-dimensional marine nuclear pollutant dispersion numerical model developed by the First Institute of Oceanography,Mine the Maximum Concentration Method can identify instantaneous high-risk areas,it struggles to accurately describe long-term dispersion trends.The Geometric Center Method provides a good approximation of the macro dispersion trend but has deviations in reflecting the position of the concentration center.The dispersion trajectories of nuclear pollutants are closely related to the characteristics of regional ocean currents.This finding emphasizes the critical role of ocean dynamic processes in the dispersion of nuclear pollutants.
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