WORLDWIDE FALLOUT 81 



1.0 r- 



tr 



0.01 



./ 



Southern 



hern >» 



Northern 



■.—■■—.--./ \ 



\. 



20 40 60 80 



DEGREES LATITUDE 



Fig. 15 Activity ratio of 23 8py^239 ,24 op^ ^ 3 function of latitude in integrated soil 

 sample. 



References 



Diamond, H., et al., 1961, Heavy Isotopes Abundances in Mike Thermonuclear De\ice, Phys. Rev., 



119(6): 2000-2004. 

 Ferber, Gilbert J., 1964, Distribution of Radioactivity with Heights in Nuclear Clouds, in Proceedings 



of the Second Conference on Radioactive Fallout from Nuclear Weapons Tests, Germantown, Md., 



Nov. 3-6, 1964, USAEC Report CONF-765, pp. 629-645, NTIS. 

 Hardy, E. P., Jr., 1964, Fallout Progi-am, Quarterly Summary Report, Jan. 1, 1963. Tfirough Dec. 1, 



1964. USAEC Report HASL-142, p. 225, Health and Safety Laboratory, NTIS. 

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Report HASL-273, pp. 111-112, Health and Safety Laboratory, NTIS. 

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 , 1977, Health and Safety Laboratory Environmental Quarterly, Sept. 1, 1976. to Dec. 1, 1976, 



USAEC Report HASL-315, p. B-1 18, Health and Safety Laboratory, NTIS. 

 , P. W. Krey, and H. L. Voichok, 1973, Global Inventory and Distribution of Fallout Plutonium, 



Nature, 241(5 390): 444-445. 

 Harley, J. H., 1975, Transuranium Elements on Land, paper presented at the American Nuclear 



Society Winter Meeting 1974, ERDA Report HASL-291, pp. 1/105-109, Health and Safety 



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HASL-235, Health and Salety Laboratory, NTIS. 



