A long distance measurement of radioxenon in Yellowknife, Canada, in late October 2006

Details A long distance measurement of radioxenon in Yellowknife, Canada, in late October 2006 A long distance measurement of radioxenon in Yellowknife, Canada, in late October 2006

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3420802s&link_type=abstract

Geophysical Research Letters, Volume 34, Issue 20, CiteID L20802

Mathematics

Logic

4

Atmospheric Composition And Structure: Troposphere: Constituent Transport And Chemistry, Paleoceanography: Atmospheric Transport And Circulation, Oceanography: Biological And Chemical: Radioactivity And Radioisotopes, Atmospheric Composition And Structure: Troposphere: Composition And Chemistry, Exploration Geophysics: Radioactivity Methods

Scientific paper

Between 21-25 October 2006, elevated levels of atmospheric xenon-133 were observed in Yellowknife (Canada). This station is located in an area where the background level of radioxenon is very low. The few measurements of xenon-133 above background in the last three years have been traced back to known nuclear facilities. The measurements in late October could not be linked to them. According to backward atmospheric transport models (ATM), the air that contained the measured radioxenon could have originated from the Korean Peninsula. On 9 October 2006, seismic networks world-wide recorded an event with characteristics of an underground explosion in the Democratic Peoples Republic of Korea. Forward ATM was performed using these coordinates. The results were consistent with the measurements in Yellowknife, more than 7000 km away. The order of magnitude of the amount measured is consistent with simple leak scenarios assumed for a low yield underground nuclear explosion on the Korean peninsula.

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