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1.
Fallout Deposition
1.1
Monthly Precipitation
1.11
sSr?° ana sr89 in Monthly Deposition at World
Land Sites
Precipitation and dry fallout are collected over
oF
monthly periods at stations in the United States
and overseas.
The samples are analyzed for Sr-90
and Sr-89 when it is expected to be present. A
description of the sampling network and available
data for each site are given in the Appendix,
sectionA.
Other Isctopes at Selected Sites
At a number of stations in the United States,
monthly deposition ccllections were analyzed for
radiostrontium and other nuclides of interest to
the Atomic Energy Commission.
Multinuclide anal-
yses were discontinued as of July 1967 ard the
complete data reported in HASL~193, p. Ii-4 through
It-25.,
Plutonium analyses of monthly depositicn are continuing at New York City, Melbourne, Seatrle,
Honolulu, Salisbury, Durban, and Rio de Janeiro.
Available data are given in the Appendix, Section C.
1.2
Radiostrontium Deposition at Atlantic Ocean Weather Staticns
Measurements Of radicstrontium in precipitation and dry
fallout collecticns at four U. S. Ccast Guard Stations
in the North Atlantic Ocean are carried out for comparison with land stations in the same latitude band.
A
description of the stations and availiable data are given
in the Appendix, Section B.
Surface Air Sampling
Prodqram
The Health and Safety Laboratory has been collecting surface air
particulate samples at stations in the Western Hemisphere since
January 1963.
The filters are analyzed for a number cf fission and
activation product radionuclides.
available data are given
in
A description of the program and
the Appendix,
Section D.
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