Document Details
Title:
ENEWETAK ATOLL BULLETIN, NO. 4, 9 JANUARY 1978
Author(s):
Subject Terms:
WARNINGS; PERSONNEL; REGULATIONS; TRANSPORTATION
Document Location:
Location - DOE/NNSA NUCLEAR TESTING ARCHIVE Address - P.O. Box 98521 City - Las Vegas State - NV Zip - 89193-8521 Phone - (702)794-5106 Fax - (702)862-4240 Email - NTA@NV.DOE.GOV
Document Type:
SERIAL PUBLICATION/NEWSLETTER
Publication Date:
1978 Jan 09
Declassification Status:
Never classified
Document Pages:
0002
Accession Number:
NV0067561
Originating Research Org.:
DEFENSE NUCLEAR AGENCY, U.S.
OpenNet Entry Date:
1994 Aug 26
OpenNet Modified Date:
2003 Sep 18
Description/Abstract:
EMPHASIS IS PLACED ON TYPICAL ENVIRONMENTS IN THE SOUTHEASTERN UNITED STATES. CLAY MINERALS OF SOIL, ESPECIALLY MICACEOUS TYPES, EFFECTIVELY FIX CESIUM AND REMOVE IT FROM BIOTIC COMPONENTS OF ECOSYSTEMS. FALLOU T CESIUM-137 ENTERS FOOD CHAINS PRINCIPALLY BY DIRECT DEPOSITION ON VE GATION; UPTAKE BY THE ROOT PATHWAY IS UUSUALLY LESS THAN DIRECT DEPOSI GATION; UPTAKE BY THE ROOT PATHWAY IS USUALLY LESS THAN DIRECT CONTAMI NATION OF PLANT FOLIAGE. CESIUM-137 LEVELS IN VEGETATION OF THE SOUTHE ASTERN U.S. COASTAL PLAIN ARE ESTIMATED ON THE BASIS OF DIRECT DEPOSIT ION FROM THE ATMOSPHERE AND ROOT UPTAKE FROM SOIL. ESITMATED CONCENTRA TIONS, BASED ON CURRENT CONCEPTS OF CESIUM-137 DYNAMICS IN VEGETATION AND FIXATION IN SOIL, ARE IN GOOD AGREEMENT WITH OBSERVED VALUES OF CE SIUM IN VEGATION COLLECTED IN 1969 AND 1970. MECHANISMS OF DIRECT DEPO SITION AND OF INCREASED UPTAKE BY ROOTS DUE TO THE ABSENCE OF MICACEOU S CLAYS ADEQUATELY EXPLAIN THE HIGHER LEVELS OF CESIUM-137 IN VEGETATI ON OF THE COASTAL PLAIN AND THUS ARE RESPONSIBLE FOR THE ELEVATED CESI UM-137 REPORTED FOR MILK OF THE TAMPA, FLA., MILKSHED.