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| Titel |
A continental radon flux map for Australia |
| VerfasserIn |
A. D. Griffiths, W. Zahorowski, A. Element, S. Werczynski |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250022401
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| Zusammenfassung |
| The inert radioactive gases radon–222 and radon–220 are useful natural tracers for
atmospheric mixing and transport studies. With a half–life of 3.8 days, the former has been
widely used to verify the treatment of mixing in atmospheric models, commonly with the
assumption of a uniform flux of 1atomcm-2 s-1 from ice-free land. We present an
improved representation of the surface flux of both radon–222 and radon–220, based on an
observed empirical relationship between radon flux-chamber measurements and airborne
gamma ray measurements, which have recently been produced on a calibrated Australia-wide
grid. With the incorporation of additional environmental parameters, it is possible to
produce a map of the spatial variability of surface radon flux at a continental scale. |
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