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Title: THYROIDAL RADIOIODINE CONCENTRATIONS IN NORTH AMERICAN DEER FOLLOWING 1961- 1963 NUCLEAR WEAPONS TESTS

Abstract

Radioiodine concentrations were measured in deer, elk, caribou, and reindeer thyroids collected in Alaska, California, Colorado, Maryland, Washington, and Wyoming during the period September 1961 through mid-April 1963. Periods of maximum I/sup 131/ concentrations in most samples occurred in winter months, about two to three months after initial atmospheric tests. Values during the 1961 peak period were slightly greater than during the 1962 peak period but were maintained over a shorter period of time. The I/sup 131/ concentrations showed a clear response to each series of nuclear tests conducted by France, Russia, and the U. S. Maximum response occurred following tests conducted in the atmosphere and the SEDAN detonation on July 6, 1962; least response followed underground tests. Thyroid doses received by the various animal groups from I/ sup 131/ during the 1962 and 1963 nuclear tests varied from about 20 rads in Colorado deer to 0.8 rad in Alaskan reindeer, compared to 5.1 and 1.2 rads, respectively, in similar samples collected during the 1961 and 1962 nuclear test series. (auth)

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
General Electric Co. Hanford Atomic Products Operation, Richland, Wash. and Colorado State Univ., Fort Collins
OSTI Identifier:
4166184
Report Number(s):
HW-SA-3141; CONF-66-11
DOE Contract Number:
AT(45-1)-1350
Resource Type:
Technical Report
Resource Relation:
Other Information: From Symposium on the Biology of Radioiodine, Richland, Wash., June 1963. Orig. Receipt Date: 31-DEC-64
Country of Publication:
United States
Language:
English
Subject:
BIOLOGY AND MEDICINE; ALASKA; ANIMALS; CALIFORNIA; CARIBOU; COLORADO; CONFERENCE; CONTAMINATION; DEER; ENVIRONMENT; FALLOUT; IODINE 131; MEASURED VALUES; NUCLEAR EXPLOSIONS; QUANTITY RATIO; RADIATION DOSES; REACTORS; REINDEER; SAMPLING; THYROID; UNDERGROUND EXPLOSIONS; USA; VARIATIONS; WASHINGTON

Citation Formats

Hanson, W.C., Dahl, A.H., Whicker, F.W., Longhurst, W.M., Flyger, V., Davey, S.P., and Greer, K.R. THYROIDAL RADIOIODINE CONCENTRATIONS IN NORTH AMERICAN DEER FOLLOWING 1961- 1963 NUCLEAR WEAPONS TESTS. United States: N. p., 1963. Web.
Hanson, W.C., Dahl, A.H., Whicker, F.W., Longhurst, W.M., Flyger, V., Davey, S.P., & Greer, K.R. THYROIDAL RADIOIODINE CONCENTRATIONS IN NORTH AMERICAN DEER FOLLOWING 1961- 1963 NUCLEAR WEAPONS TESTS. United States.
Hanson, W.C., Dahl, A.H., Whicker, F.W., Longhurst, W.M., Flyger, V., Davey, S.P., and Greer, K.R. 1963. "THYROIDAL RADIOIODINE CONCENTRATIONS IN NORTH AMERICAN DEER FOLLOWING 1961- 1963 NUCLEAR WEAPONS TESTS". United States. doi:.
@article{osti_4166184,
title = {THYROIDAL RADIOIODINE CONCENTRATIONS IN NORTH AMERICAN DEER FOLLOWING 1961- 1963 NUCLEAR WEAPONS TESTS},
author = {Hanson, W.C. and Dahl, A.H. and Whicker, F.W. and Longhurst, W.M. and Flyger, V. and Davey, S.P. and Greer, K.R.},
abstractNote = {Radioiodine concentrations were measured in deer, elk, caribou, and reindeer thyroids collected in Alaska, California, Colorado, Maryland, Washington, and Wyoming during the period September 1961 through mid-April 1963. Periods of maximum I/sup 131/ concentrations in most samples occurred in winter months, about two to three months after initial atmospheric tests. Values during the 1961 peak period were slightly greater than during the 1962 peak period but were maintained over a shorter period of time. The I/sup 131/ concentrations showed a clear response to each series of nuclear tests conducted by France, Russia, and the U. S. Maximum response occurred following tests conducted in the atmosphere and the SEDAN detonation on July 6, 1962; least response followed underground tests. Thyroid doses received by the various animal groups from I/ sup 131/ during the 1962 and 1963 nuclear tests varied from about 20 rads in Colorado deer to 0.8 rad in Alaskan reindeer, compared to 5.1 and 1.2 rads, respectively, in similar samples collected during the 1961 and 1962 nuclear test series. (auth)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1963,
month = 8
}

Technical Report:
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  • I/sup 131/ concentrations in thyroids of deer from Washington, Colorado, and Maryland and of caribou from Alaska were measured following the resumption of nuclear weapons tests by the USSR on September 1, 1961. Maximum concentrations occurred nearly two months after the first nuclear test and then decreased it an effective half time of about 15 days. Washington and Colorado deer thyroids contained the highest concentrations, Maryland thyroids were median, and Alaskan caribou thyroids contained lowest concentrations. (auth)
  • After the resumption of nuclear weapon tests in September, 1961 several samples of foods, including vegetables, milk, fruits, grains and composite meals were studied for their radioactive content. The measurements were made using a low-level gamma-ray scintillation spectrometer. Several freshly produced short lived fission products were identified in the gamma spectra of these samples. Quantitative estimation of some of the important short lived fission products was carried out. The data on the fission products (Zr-95 + Nb-95), Ce-141, Ce-144, Ru-103, Ru106, and Cs-137 in various samples are presented. Data on gross gamma activity of the samples and the gamma activitymore » due to natural potassium are also presented. The fission products (Zr-95 + Nb-95) contribute about 25% of the total activity in fresh fallout and the other fission products given above together contribute another 25% of the activity in fresh fallout. The maximum level of (Zr95 + Nb-95) in vegetables is found to be about 18% of the level which would give a dose above the acceptable limit for continuous consumption. The other isotopes show comparatively smaller fraction of acceptable levels. (auth)« less
  • Thirty papers are presented reviewing AEC research projects related to fall-out from weapons tests. Reviews of specific related programs by representatives from Canada and the UK are also included. The scope of the conference includes characteristics of fall-out, atmospheric factors affecting deposition, distribution in the environment, and distribution in the food chain and man. Separate abstracts have been prepared for each paper. (C.H.)
  • Concentrations of I 131 in the thyroids of deer from Washington, Colorado, and Maryland, and of caribou from Alaska were measured after the resumption of nuclear weapon tests by the U.S.S.R. on September 1, 1961. Maximum concentrations occurred nearly 2 months after the first nuclear test and then decreased at an effective half time of about 15 days. Thyroids from Washington and Colorado deer showed the highest concentrations, thyroids from Alaskan caribou the lowest.