Polonium-210 fallout from the 1980 eruption of Mount St. Helens and the mystery cloud of 1982

The amount of excess 210Po activity injected into the atmosphere by the 18 May 1980 eruption of Mount St. Helens was greater than that of 90Sr released by the 16 October 1980 Chinese test explosion of a 0.2 to 1 megaton nuclear device. The occurrence of a ‘mystery’ cloud prior to the 28 March 1982 e...

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Bibliographic Details
Published inGEOCHEMICAL JOURNAL Vol. 18; no. 2; pp. 55 - 60
Main Authors Kuroda, P. K., Liou, John C. H., Banavali, Ashok D., Akridge, John D., Burchfield, Larry A.
Format Journal Article
LanguageEnglish
Published Tokyo GEOCHEMICAL SOCIETY OF JAPAN 1984
Geochemical Society of Japan
Subjects
Earth sciences
Earth, ocean, space
Exact sciences and technology
Geochemistry
Soil and rock geochemistry
Gases
Mount Saint Helens
United States
Polonium
Atmospheric precipitation
North America
Isotopes
Volcanism
Washington
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Summary:The amount of excess 210Po activity injected into the atmosphere by the 18 May 1980 eruption of Mount St. Helens was greater than that of 90Sr released by the 16 October 1980 Chinese test explosion of a 0.2 to 1 megaton nuclear device. The occurrence of a ‘mystery’ cloud prior to the 28 March 1982 eruption of El Chichón volcano was accompanied by an increase in the 210Po/210Pb ratio in rain samples collected at Fayetteville, Arkansas, during the months of January and February, 1982.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0016-7002
1880-5973
DOI:10.2343/geochemj.18.55