Chronology of Pu isotopes and 236U in an Arctic ice core

Wendel, Cato Christian; Oughton, Deborah; Lind, Ole Christian; Skipperud, Lindis; Fifield, L.K.; Isaksson, Elisabeth; Tims, S.G.; Salbu, Brit

doi:10.1016/j.scitotenv.2013.05.054

Cited by 37 publications

(30 citation statements)

References 41 publications

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“…Radionuclide aerosols additionally were released during the Chernobyl accident in 1986 CE. 2 Aerosols from NWT were dispersed on local, regional (tropospheric), or global (stratospheric) scales. Aerosols emitted by NWT were partitioned depending on the altitude and size of the test as well as the local meteorology, 1 and fallout occurred during periods ranging from minutes to five years following the atmospheric tests.…”

Section: Introductionmentioning

confidence: 99%

A Method for Continuous ²³⁹Pu Determinations in Arctic and Antarctic Ice Cores

Arienzo

McConnell

Chellman

et al. 2016

Environ. Sci. Technol.

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Section: Introductionmentioning

confidence: 99%

A Method for Continuous ²³⁹Pu Determinations in Arctic and Antarctic Ice Cores

Arienzo

McConnell

Chellman

et al. 2016

Environ. Sci. Technol.

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“…Fallout in the immediate vicinity of tests carried out close to ground level can also have relatively large particles derived from bomb fragments or contaminated ground material that are deposited from the atmosphere as "local fallout" within hours or days of the test [3]. The final relative amounts of the Pu isotopes from each test depend on the individual weapon design and yield, hence local and regional fallout can have plutonium isotopic signatures that differ significantly from that of global fallout.…”

Section: Introductionmentioning

confidence: 99%

Measurements of low-level anthropogenic radionuclides from soils around Maralinga

Tims

Tsifakis

Srncik

et al. 2013

EPJ Web of Conferences

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Abstract. The isotopes 239 Pu and 240 Pu are present in surface soils as a result of global fallout from nuclear weapons tests carried out in the 1950's and 1960's. These isotopes constitute artificial tracers of recent soil erosion and sediment movement. In practice the high throughput capabilities and high sensitivity of the AMS technique makes the study of Australia's geographically large areas viable using Pu isotopes. As part of its weapons development program the United Kingdom carried out a series of atmospheric and surface nuclear weapons tests at Maralinga, South Australia in 1956 and 1957. The contribution from the Maralinga tests to the Pu isotopic abundances present in the region around Maralinga is largely unknown. In global fallout, for example, the 240 Pu/ 239 Pu ratio is typically in the range 0.17 -0.19, but the influence of the regional tests could lead to values outside this range. This would impact on the assessment techniques used in the soil and sediment tracer studies. We report recent measurements on soil samples collected from across the Maralinga Test site.

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“…No hemisfério norte existem registros para 239+240 Pu em numerosos ambientes que confirmam o pico em 1963, como sedimentos marinhos e lacustres, corais, registros de gelo no Ártico e glaciares. [71][72][73] As regiões lacustres, onde os depósitos têm pouca mobilidade, e polares, onde a acumulação é rápida e pouco sujeita à intervenção, mostram-se como uma excelente alternativa para a localização do golden spike. No caso da datação do Holoceno e suas divisões em idades, como já foi mencionado, foi utilizada essa alternativa através de testemunhos de gelo da Groenlândia.…”

Section: Os Possíveis Marcadores Do Antropocenounclassified

Radionuclídeos Como Marcadores De Um Novo Tempo: O Antropoceno

Silva¹,

Arbilla²,

Machado³

et al. 2020

Quim. Nova

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Working Group completed a binding vote to affirm some of the key questions that have been agreed in 2016: the Anthropocene should be considered as a formal chronostratigraphic unit, defined by a Global Boundary Stratotype Section and Point (GSSP), using one of the stratigraphic signals around the mid-twentieth century of the Common Era. The fallout from nuclear weapons testing appears as the most suitable GSSP. In this article, the main anthropogenic markers are discussed as well as the sources or human-made radiation and the signature of nuclear weapons testing. The appearance of 239+240 Pu in the early 1950s and the clear peak, in 1963, makes a good marker. High resolution archives include layers of sedimentary rocks, lacustrine and marine sediments and corals and polar ice cores. A coupled application of other radioactive isotopes, as 137 Cs, 14 C and 241 Am, may be useful to categorize distinct fallout signatures. A site to define the Anthropocene (golden spike) would ideally be located between 30° and 60° north of the equator. Nevertheless, results obtained in sediments on the Brazilian coast showed that both 239+240 Pu and 137 Cs signatures could be detected and quantified as markers of this "atomic age".

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Chronology of Pu isotopes and 236U in an Arctic ice core

Cited by 37 publications

References 41 publications

A Method for Continuous ²³⁹Pu Determinations in Arctic and Antarctic Ice Cores

A Method for Continuous ²³⁹Pu Determinations in Arctic and Antarctic Ice Cores

Measurements of low-level anthropogenic radionuclides from soils around Maralinga

Radionuclídeos Como Marcadores De Um Novo Tempo: O Antropoceno

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Chronology of Pu isotopes and 236U in an Arctic ice core

Cited by 37 publications

References 41 publications

A Method for Continuous 239Pu Determinations in Arctic and Antarctic Ice Cores

A Method for Continuous 239Pu Determinations in Arctic and Antarctic Ice Cores

Measurements of low-level anthropogenic radionuclides from soils around Maralinga

Radionuclídeos Como Marcadores De Um Novo Tempo: O Antropoceno

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A Method for Continuous ²³⁹Pu Determinations in Arctic and Antarctic Ice Cores

A Method for Continuous ²³⁹Pu Determinations in Arctic and Antarctic Ice Cores