タグ「Black Sea」
Title: Inflow of Chernobyl 90Sr to the Black Sea from the Dnepr River
Author: Gennady G. Polikarpov, Hugh D. Livingston, Ludmilla G. Kulebakina, Ken O. Buesseler, Nikolai A. Stokozov, Susan A. Casso
Reference: Estuarine, Coastal and Shelf Science, Volume 34, Issue 3, March 1992, Pages 315-320
DOI: http://dx.doi.org/10.1016/S0272-7714(05)80087-3
Keywords: Chernobyl; 90Sr; Dnepr River; Black Sea
Abstract: Following the Chernobyl reactor accident in April 1986, studies of radionuclides in aquatic systems in general, and in the Black Sea in particular, have focused primarily on the fate and behaviour of direct fallout deposition (Buesseler et al., in press; Livingston et al., 1988; Polikarpov et al., 1991). In this paper we present an evaluation of riverine 90Sr input and its use as a tracer for circulation studies of Chernobyl labelled shelf waters. We describe how 90Sr measurements in the Dnepr River in the period 1986–89 can be used to determine the amount and timing of the subsequent 90Sr inflow to the northwest Black Sea. Comparison of these data with measurements made in the Danube River in 1988 demonstrates that the Dnepr 90Sr flux to the Black Sea is about one order of magnitude higher than that of the Danube.
URL: http://www.sciencedirect.com/science/article/pii/S0272771405800873
Title: Distribution and migration of 90Sr in components of the Dnieper River basin and the Black Sea ecosystems after the Chernobyl NPP accident
Author: N.Yu. Mirzoyeva, V.N. Egorov, G.G. Polikarpov
Reference:
Journal of Environmental Radioactivity,
In Press, Corrected Proof,
Available online 21 March 2013
DOI: http://dx.doi.org/10.1016/j.jenvrad.2013.02.011
Keywords: Chernobyl accident; The Dnieper River basin; The Black Sea; 90Sr; Redistribution; Forecast; Dose assessment.
Abstract:► Regularities of change in 90Sr concentrations in the aquatic ecosystems were studied. ► Forecasts of time for 90Sr concentrations reduction to pre-accident levels were made. ► 90Sr CF values for hydrobionts did not depend on distance from the accident area. ► 90Sr is useful as a radiotracer for the chronological dating of the bottom sediments. ► Dose received by hydrobionts from 90Sr after accident period was determined.
URL: http://www.sciencedirect.com/science/article/pii/S0265931X13000489
Title: Recent sedimentation in the Black Sea: New insights from radionuclide distributions and sulfur isotopes.
Author: Yücel, Mustafa; Moore, Willard S.; Butler, Ian B.; Boyce, Adrian; Luther, George W.
Reference: Deep-Sea Research Part I, Oceanographic Research Papers. Aug2012, Vol. 66, p103-113. 11p.
DOI: http://dx.doi.org/10.1016/j.dsr.2012.04.007
Keywords: Black Sea; Sediment; Mass accumulation rate; Pyrite; Sulfur isotope
Abstract: ► Mass accumulation rates (MAR) in the abyssal Black Sea were 61 to 76 g m−2 yr−1. ► These values point to increasing MARs for the past century. ► In the cores with turbidites, we used Chernobyl-derived Cs-137 to compute MAR. ► In turbidite-impacted cores, MAR can be as high as 5230 g m−2 yr−1. ► Fast deposition was reflected in the pyrite sulfur isotopic ratios as well.
URL: http://www.sciencedirect.com/science/article/pii/S096706371200088X
- Title: Amount of 137Cs and 134Cs radionuclides in the Black Sea produced by the Chernobyl accident
Author: Eremeev, V.N. / Ivanov, L.M. / Kirwan, A.D., Jr / Margolina, T.M.
Reference: Journal of Environmental Radioactivity, 27 (1), p.49-63, Jan 1995
doi: 10.1016/0265-931X(94)00032-R
Keywords:
Abstract: Revised estimates of the amount of the nuclides 137Cs and 134Cs in the Black Sea resulting from the Chernobyl accident are reported. These results are at some variance with those reported by Chudinovskikh and Eremeev (Practical Ecology of Black Sea Areas, Naukova dumka, Kiev, 1990, pp. 46–56) and Nikitin et al. (Atomic Energy, 65 (1988) 134-7). The analysis here employs a spectral method whereas these other studies utilized less accurate methods. The study illustrates that the choice of numerical techniques for assimilating in-situ data into a model is important.
URL: http://www.sciencedirect.com/science/article/pii/0265931X9400032R
