Spatial statistical analysis of contamination level of 241 Am and 239 Pu, Thule, North-West Greenland

• Main Author: Strodl Andersen, Jens
• Format: Book
• Language: English
• Published: Risø National Laboratory for Sustainable Energy 2011
• Subjects: Risø-R-1791(EN); Risø-R-1791; Greenland; Grønnedal; Thule
• Online Access: https://orbit.dtu.dk/en/publications/2f021b18-769b-48d0-a426-0dd6273ac5ff; https://backend.orbit.dtu.dk/ws/files/12607863/ris_r_1791.pdf

A spatial analysis of data on radioactive pollution on land at Thule, North-West Greenland is presented. The data comprises levels of 241 Am and 239,240 Pu on land. Maximum observed level of 241 Am is 2.8×10 5 Bq m -2 . Highest levels were observed near Narsaarsuk. This area was also sampled most intensively. In Grønnedal the maximum observed level of 241 Am is 1.9×10 4 Bq m -2 . Prediction of the overall amount of 241 Am and 239,240 Pu is based on grid points within the range from the nearest measurement location. The overall amount is therefore highly dependent on the model. Under the optimal spatial model for Narsaarsuk, within the area of prediction, the predicted total amount of 241 Am is 45 GBq and the predicted total amount of 239,240 Pu is 270 GBq.