Detection of radioxenon in Darwin, Australia following the Fukushima Dai-ichi nuclear power plant accident

A series of 133Xe detections in April 2011 made at the Comprehensive Nuclear-Test-Ban Treaty Organisation (CTBTO) International Monitoring System noble gas station in Darwin, Australia, were analysed to determine the most likely source location. Forward and backwards atmospheric transport modelling...

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Bibliographic Details
Published in:Journal of environmental radioactivity 2013-12, Vol.126, p.40-44
Main Authors: Orr, Blake, Schöppner, Michael, Tinker, Rick, Plastino, Wolfango
Format: Article
Language:English
Subjects:
Accidents
Air Pollutants, Radioactive - analysis
Analysis methods
Applied sciences
Atmospheric pollution
Australia
CTBTO
Environmental monitoring
Exact sciences and technology
Fukushima Dai-ichi
Fukushima Nuclear Accident
Modelling
monitoring
Nuclear accidents
nuclear power
Nuclear power generation
Nuclear power plants
Pollution
Position (location)
Radiation Monitoring
Radioxenon
Stations
Xenon Radioisotopes - analysis
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Summary:A series of 133Xe detections in April 2011 made at the Comprehensive Nuclear-Test-Ban Treaty Organisation (CTBTO) International Monitoring System noble gas station in Darwin, Australia, were analysed to determine the most likely source location. Forward and backwards atmospheric transport modelling simulations using FLEXPART were conducted. It was shown that the most likely source location was the Fukushima Dai-ichi nuclear power plant accident. Other potential sources in the southern hemisphere were analysed, including the Australian Nuclear Science and Technology Organisation (ANSTO) radiopharmaceutical facility, but it was shown that sources originating from these locations were highly unlikely to be the source of the observed 133Xe Darwin detections. •Series of post-Fukushima radioxenon detections were made at CTBTO noble gas station in Darwin, Australia.•Atmospheric transport modelling is used to analyse the detections.•Fukushima Dai-ichi NPP accident is shown to be the most likely source.•Other potential sources in the southern hemisphere are shown to make minimal contribution to detections.
ISSN:0265-931X
1879-1700
DOI:10.1016/j.jenvrad.2013.07.002