Environmental Safety Research Division, Korea Atomic Energy Research Institute, Daedeok-daero 989-111, Yuseong-gu, Daejeon, 305-353, Republic of Korea.
Environmental Safety Research Division, Korea Atomic Energy Research Institute, Daedeok-daero 989-111, Yuseong-gu, Daejeon, 305-353, Republic of Korea.
Environ Pollut. 2019 May;248:10-17. doi: 10.1016/j.envpol.2019.01.121. Epub 2019 Feb 7.
A source detective system has been developed to estimate unknown source regions and release rates of radionuclides released into the air from covert nuclear activities and accidents. This system is composed of trajectory, atmospheric dispersion, and source term estimation models. Simulated results were compared with the measurements of a field tracer experiment performed at the Yeonggwang nuclear power plant in Korea in May 1996. Two trajectories among five computed backward trajectories moved toward the original release point, and the comparative results contained some error due to single operation of the backward trajectory model. An atmospheric dispersion model was used to minimize the error of the trajectory model and to improve the accuracy of the source detective system. The results generated by the trajectory and atmospheric dispersion models together agreed better with the measurements than those obtained using the trajectory model alone.
已经开发出一种源侦探系统，用于估计从秘密核活动和事故中释放到空气中的放射性核素的未知源区和释放率。该系统由轨迹、大气扩散和源项估计模型组成。模拟结果与 1996 年 5 月在韩国永光核电厂进行的现场示踪剂实验的测量结果进行了比较。在计算的五个后向轨迹中，有两个轨迹向原始释放点移动，由于后向轨迹模型的单次操作，比较结果存在一些误差。大气扩散模型用于最小化轨迹模型的误差，并提高源侦探系统的准确性。轨迹和大气扩散模型生成的结果与测量结果的一致性比仅使用轨迹模型时更好。
