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Title: Sediment studies at Bikini Atoll part 1. distribution of fine and coarse components in surface sediments

Abstract

In 1979, 21 years after the moratorium on nuclear testing in the Marshall Islands, surface sediment samples (to depths of 2 and 4 cm) were collected from 87 locations over the floor of Bikini lagoon. The main purpose for the collections was to map the distribution of long- lived man-made radionuclides associated with the bottom material. In addition the samples were processed to estimate the fraction of fine and coarse components to show what modifications occurred since the sediment composition was first described in samples collected before testing in 1946. In this report a comparison is made of the amount and distribution of fine material associated with the lagoon surface sediment before and after the testing of nuclear devices. Nuclear testing produced more finely divided material in-the surface sediment layer over large areas of the lagoon and especially in regions of the lagoon and reef adjacent to test sites. Five cratering events at Bikini Atoll generated sufficient material to account for the inventory of new fine material found over the bottom surface of the lagoon. Although the fraction of fine material in the bottom sediments was altered by the nuclear events, the combined processes of formation, transport and deposition weremore » not sufficiently dynamic to alter the geographical features of the major sedimentary components over most of the lagoon floor.« less

Authors:
; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
574548
Report Number(s):
UCRL-LR-126641
ON: DE98050670; TRN: 98:004339
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 1 Jan 1997
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 05 NUCLEAR FUELS; BIKINI; SEDIMENTS; PARTICLE SIZE

Citation Formats

Noshkin, V E, Eagle, R J, and Robison, W L. Sediment studies at Bikini Atoll part 1. distribution of fine and coarse components in surface sediments. United States: N. p., 1997. Web. doi:10.2172/574548.
Noshkin, V E, Eagle, R J, & Robison, W L. Sediment studies at Bikini Atoll part 1. distribution of fine and coarse components in surface sediments. United States. doi:10.2172/574548.
Noshkin, V E, Eagle, R J, and Robison, W L. Wed . "Sediment studies at Bikini Atoll part 1. distribution of fine and coarse components in surface sediments". United States. doi:10.2172/574548. https://www.osti.gov/servlets/purl/574548.
@article{osti_574548,
title = {Sediment studies at Bikini Atoll part 1. distribution of fine and coarse components in surface sediments},
author = {Noshkin, V E and Eagle, R J and Robison, W L},
abstractNote = {In 1979, 21 years after the moratorium on nuclear testing in the Marshall Islands, surface sediment samples (to depths of 2 and 4 cm) were collected from 87 locations over the floor of Bikini lagoon. The main purpose for the collections was to map the distribution of long- lived man-made radionuclides associated with the bottom material. In addition the samples were processed to estimate the fraction of fine and coarse components to show what modifications occurred since the sediment composition was first described in samples collected before testing in 1946. In this report a comparison is made of the amount and distribution of fine material associated with the lagoon surface sediment before and after the testing of nuclear devices. Nuclear testing produced more finely divided material in-the surface sediment layer over large areas of the lagoon and especially in regions of the lagoon and reef adjacent to test sites. Five cratering events at Bikini Atoll generated sufficient material to account for the inventory of new fine material found over the bottom surface of the lagoon. Although the fraction of fine material in the bottom sediments was altered by the nuclear events, the combined processes of formation, transport and deposition were not sufficiently dynamic to alter the geographical features of the major sedimentary components over most of the lagoon floor.},
doi = {10.2172/574548},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {1}
}