Journal of Radiation Research and Radiation Processing ›› 2019, Vol. 37 ›› Issue (6): 55-61.doi: 10.11889/j.1000-3436.2019.rrj.37.060601

• RADIATION PROTECTION • Previous Articles     Next Articles

Diffusion model of radioactive pollutants in nearshore zone

CHENG Weiya YANG Hongwei()   

  1. China Institute of Atomic Energy, Beijing 102413, China
  • Received:2019-09-25 Revised:2019-10-22 Accepted:2019-10-22 Online:2019-12-20 Published:2019-12-23

Abstract:

Based on the Princeton ocean model and Lagrange particle random walking model, which provide flow field prediction results, a transport diffusion model for simulating the radioactive pollution in coastal waters was established. Boxing and variable frequency bandwidth Epanechnikov kernel function method was proposed to calculate the concentration.The model was tested and verified by using the source item and the environmental field monitoring data from the Fukushima accident. The test results showed that data of 90% at different points were between 0.2~8 times, which is conformed well. It will provide the technical basis for the marine radiological consequences assessment system.

Key words: Nearshore zone, Radioactive pollutants, Migration, Diffusion model

CLC Number: 

  • TL732