Health and Safety Laboratory Environmental Quarterly Report: June 1, 1977 - September 1, 1977 Page: I-85
vii, [177] p. : graphs, tables ; 28 cm.View a full description of this report.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
WORLDWIDE DEPOSITION OF 90Sr THROUGH 1976
by H. W. Feely (HASL)
ABS TRACT
The total deposition of 90Sr on the surface
of the earth during 1976 was about 46 kilocuries.
The worldwide cumulative deposit remained at
about 11.5 megacuries as the amount of previously
deposited 90Sr which decayed radioactively only
slightly exceeded the amount of the new deposit.
The late 1976 Chinese atmospheric nuclear tests
may have contributed about 12 kilocuries to the 90Sr
deposition during 1976.
INTRODUCTION
The Health and Safety Laboratory (HASL), has maintained a world-
wide network of samplers since 1957 to collect fallout to be measured
for 90Sr. Based upon data from this network, an estimate has been
made each year since 1958 of the annual worldwide deposition and of
the cumulative deposit of 90Sr (e.g., reference 1) . In general both
the annual and cumulative values have been reasonably well verified
when comparison with results from other programs has been possible
(e.g., references 2,3). For example, in Table l estimates are given
of the worldwide annual deposition and cumulative deposition of 90Sr
as made by HASL and by the United Kingdom Atomic Energy Authority
(UKAEA) for the years 1970 to 1975. Agreement between the two
laboratories is excellent in some years and poor in others,I - 85
Upcoming Pages
Here’s what’s next.
Search Inside
This report can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Report.
Hardy, Edward P., Jr. Health and Safety Laboratory Environmental Quarterly Report: June 1, 1977 - September 1, 1977, report, October 1, 1977; New York City, New York. (https://digital.library.unt.edu/ark:/67531/metadc100819/m1/95/: accessed May 6, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.