Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Marine radioactivity in the Arctic: a retrospect of environmental studies in Greenland waters with emphasis on transport of Sr-90 and Cs-137 With theEast Greenland Current
Autore:
Aarkrog, A; Dahlgaard, H; Nielsen, SP;
Indirizzi:
Riso Natl Lab, DK-4000 Roskilde, Denmark Riso Natl Lab Roskilde Denmark DK-4000 tl Lab, DK-4000 Roskilde, Denmark
Titolo Testata:
SCIENCE OF THE TOTAL ENVIRONMENT
, volume: 238, anno: 1999,
pagine: 143 - 151
SICI:
0048-9697(19990930)238:<143:MRITAA>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
OCEAN;
Keywords:
caesium-137; strontium-90; Arctic; marine; transfer;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
66
Recensione:
Indirizzi per estratti:
Indirizzo: Aarkrog, A Riso Natl Lab, POB 49, DK-4000 Roskilde, Denmark Riso Natl Lab POB 49 Roskilde Denmark DK-4000 oskilde, Denmark
Citazione:
A. Aarkrog et al., "Marine radioactivity in the Arctic: a retrospect of environmental studies in Greenland waters with emphasis on transport of Sr-90 and Cs-137 With theEast Greenland Current", SCI TOTAL E, 238, 1999, pp. 143-151

Abstract

The waters around Greenland have received radioactive contamination from three major sources: Global fallout, discharges from the nuclear fuel reprocessing plant Sellafield in the UK, and the Chernobyl accident in the FormerSoviet Union (FSU). The global fallout peaked in the early 1960s. The radiologically most important radionuclides from this source are Sr-90 and Cs-137. Th, input of global fallout to arctic waters was direct deposition fromthe atmosphere and indirect delivery through river run off and advection from the Atlantic Ocean via the north-east Atlantic current system. The waterborne discharges from Sellafield which were at their peak between 1974 and1981 contributed primarily Cs-137, although some Sr-90 was also discharged. The Chernobyl accident in 1986 was characterised by its substantial atmospheric release of radiocaesium (Cs-134 and Cs-137). Other sources may, however, also have contributed to the radioactivity in the Greenland waters. Examples include La Hague, France, and radioactive discharges to the great Siberian rivers (Ob, Yenisey and Lena) from nuclear activities in the Former Soviet Union or the local fallout from the Novaya Zemlya nuclear weapons test site. Dumping of nuclear waste in the Kara and Barents Seas may be another, although minor source. From measurements in Greenland waters carried out since 1962 the transport of radionuclides with the East Greenland Currentis calculated and compared with the estimated inputs of Sr-90 and Cs-137 to the Arctic Ocean. This study focus on Sr-90 and Cs-137 because the longest time series are available for these two radionuclides. (C) 1999 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 04:09:34