Atmospheric flux, transport and mass balance of 210Pb and 137Cs radiotracers in different regions of Romania

Begy, Róbert; Kovács, Tibor; Vereș, Daniel; Simon, H.

doi:10.1016/j.apradiso.2016.02.008

Cited by 9 publications

(4 citation statements)

References 36 publications

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“…Our value is also quite similar to other values obtained from swamps or salt marshes found in South Africa (139 ± 37 Bq$m À2 $y À1 , n 4, Humphries et al, 2010;Kading et al, 2009;Ivanovich and Harmon, 1992). The 210 Pb flux in AMS is lower than some measurements conducted in wetlands between 30 and 60 N, e.g., Romania (between 133 and 277 Bq$m À2 $y À1 , Begy et al, 2016), China (254 and 421 Bq$m À2 $y À1 , Bao et al, 2010).…”

Section: Pb Flux In Ams Compared With Global 210 Pb Depositional supporting

confidence: 90%

Recent 210Pb, 137Cs and 241Am accumulation in an ombrotrophic peatland from Amsterdam Island (Southern Indian Ocean)

Roux

Sonke

et al. 2017

Journal of Environmental Radioactivity

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Over the past 50 years, Pb,Cs and Am have been abundantly used in reconstructing recent sediment and peat chronologies. The study of global aerosol-climate interaction is also partially depending on our understanding ofRn-Pb cycling, as radionuclides are useful aerosol tracers. However, in comparison with the Northern Hemisphere, few data are available for these radionuclides in the Southern Hemisphere, especially in the South Indian Ocean. A peat core was collected in an ombrotrophic peatland from the remote Amsterdam Island (AMS) and was analyzed for Pb,Cs and Am radionuclides using an underground ultra-low background gamma spectrometer. ThePb Constant Rate of Supply (CRS) model of peat accumulations is validated by peaks of artificial radionuclides (Cs and Am) that are related to nuclear weapon tests. We compared the AMSPb data with an updated Pb deposition database. ThePb flux of 98 ± 6 Bq·m·y derived from the AMS core agrees with data from Madagascar and South Africa. The elevated flux observed at such a remote location may result from the enhanced Rn activity and frequent rainfall in AMS. This enhancedRn activity itself may be explained by continental air masses passing over southern Africa and/or Madagascar. The Pb flux at AMS is higher than those derived from cores collected in coastal areas in Argentina and Chile, which are areas dominated by marine westerly winds with lowRn activities. We report a Cs inventory at AMS of 144 ± 13 Bq·m (corrected to 1969). Our data thus contribute to the under-represented data coverage in the mid-latitudes of the Southern Hemisphere.

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Section: Pb Flux In Ams Compared With Global 210 Pb Depositional supporting

confidence: 90%

Recent 210Pb, 137Cs and 241Am accumulation in an ombrotrophic peatland from Amsterdam Island (Southern Indian Ocean)

Roux

Sonke

et al. 2017

Journal of Environmental Radioactivity

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“…F. Zhang et al: Global dataset of atmospheric 7 Be and 210 Pb measurements Appendix A: List of references in the dataset Aaboe et al (1981), Aba et al (2016), Ahmed et al (2004), Akata et al (2008Akata et al ( , 2015Akata et al ( , 2018aAkata et al ( , 2018b, Akram et al (1999), Al-Azmi et al (2001, Alegría et al (2010), Ali et al (2011a, b), Alonso- Hernández et al (2004Hernández et al ( , 2014, Amano and Kasai (1981), Anand andRangarajan (1990), Anderson et al (1960), Andres (2018), Appleby et al (2002Appleby et al ( , 2003Appleby et al ( , 2019, Arimoto et al (1999), Arkian et al (2010), Arnold and Al-Salih (1955), Azahra et al (2003Azahra et al ( , 2004, Azimov et al (2011Azimov et al ( , 2017, Bachhuber and Bunzl (1992), Baeza et al (1996Baeza et al ( , 2016, Bas et al (2017), Baskaran and Swarzenski (2007), , Batraov et al (2016), Bazarbaev et al (2012), Begy et al (2016), Beks et al (1998), Belmaker et al (2011), Belyaev et al (2004), Benitez-Nelson and Buesseler...…”

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confidence: 99%

A global dataset of atmospheric 7Be and 210Pb measurements: annual air concentration and depositional flux

Zhang

Wang

Baskaran

et al. 2021

Earth Syst. Sci. Data

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Abstract. 7Be and 210Pb air concentration and depositional flux data provide key information on the origins and movements of air masses, as well as atmospheric deposition processes and residence time of aerosols. After their deposition onto the Earth's surface, they are utilized for tracing soil redistribution processes on land, particle dynamics in aquatic systems, and mixing processes in open ocean. Here we present a global dataset of air concentration and depositional flux measurements of atmospheric 7Be and 210Pb made by a large number of global research communities. Data were collected from published papers between 1955 and early 2020. It includes the annual surface air concentration data of 7Be from 367 sites and 210Pb from 270 sites, the annual depositional flux data of 7Be from 279 sites and 210Pb from 602 sites. When available, appropriate metadata have also been summarized, including geographic location, sampling date, methodology, annual precipitation, and references. The dataset is archived at https://doi.org/10.5281/zenodo.4785136 (Zhang et al., 2021) and is freely available for the scientific community. The purpose of this paper is to provide an overview of the scope and nature of this dataset and its potential utility as baseline data for future research.

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“…SAR also displayed noncontinuous diminish from top to bottom layers especially upper fifteen layers of the core. 210 The 210 Pb fluxes (296 -207 Bq m -2 y -1 ) measured from core inventories in Lake Karagöl are higher than Lake Chenghai (average 216 Bq m -2 y -1 ) [60], the average one (43 ± 13 Bq m -2 y -1 ) at Al-Oteibeh Lake [61], Lake Tonček (74 Bq m -2 y -1 ) [62], more or less same with one (1.9 dpm cm -2 y -1 ) at the Sun-Moon Lake in middle Taiwan [63], and lower than Lake Sihailongwan (490 Bq m -2 y -1 ) [64], Red Lake area sediments (309 ± 48 Bq m -2 y -1 ) [65].…”

Section: Resultsmentioning

confidence: 99%

Applying of Modified Constant Rate of Supply Model to Lake Sediments in 210Pb Dating and Assessment of Some Heavy Metals

Sert

2018

SDÜ Fen Bil Enst Der

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In present study, activity concentrations were indirectly obtained by utilizing alpha spectrometry. Sediment chronology was determined by using modified CRS model. Average sediment accumulation rates are 0.351, 0.324, 0.222 g cm -2 y -1 in S-1, S-2, S-3 stations respectively. With reference to atmospheric 210 Pb flux (29 mBq cm -2 y -1 ) Lake Karagöl has extra outer 210 Pb input (soil erosion) from the catchment area. In terms of Enrichment Factor (EF), heavy metal concentrations are lower than the anthropogenic values. So it can be said that the elements except Au originate from the continental supply. Au has unexpectedly too high level EF value (58.22) in northern station (S-1) of the Lake Karagöl. It corresponds to time interval from 2004 to nowadays. However Pollution Load Index (PLI) says different consequences from the EF values. PLI value has only baseline levels of pollutants in northern part of the Lake Karagöl as it shows progressive deterioration of the site for southern part of the Lake Karagöl.

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Atmospheric flux, transport and mass balance of 210Pb and 137Cs radiotracers in different regions of Romania

Cited by 9 publications

References 36 publications

Recent 210Pb, 137Cs and 241Am accumulation in an ombrotrophic peatland from Amsterdam Island (Southern Indian Ocean)

Recent 210Pb, 137Cs and 241Am accumulation in an ombrotrophic peatland from Amsterdam Island (Southern Indian Ocean)

A global dataset of atmospheric <sup>7</sup>Be and <sup>210</sup>Pb measurements: annual air concentration and depositional flux

Applying of Modified Constant Rate of Supply Model to Lake Sediments in <sup>210</sup>Pb Dating and Assessment of Some Heavy Metals

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Atmospheric flux, transport and mass balance of 210Pb and 137Cs radiotracers in different regions of Romania

Cited by 9 publications

References 36 publications

Recent 210Pb, 137Cs and 241Am accumulation in an ombrotrophic peatland from Amsterdam Island (Southern Indian Ocean)

Recent 210Pb, 137Cs and 241Am accumulation in an ombrotrophic peatland from Amsterdam Island (Southern Indian Ocean)

A global dataset of atmospheric &lt;sup&gt;7&lt;/sup&gt;Be and &lt;sup&gt;210&lt;/sup&gt;Pb measurements: annual air concentration and depositional flux

Applying of Modified Constant Rate of Supply Model to Lake Sediments in <sup>210</sup>Pb Dating and Assessment of Some Heavy Metals

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Product

Resources

About

A global dataset of atmospheric <sup>7</sup>Be and <sup>210</sup>Pb measurements: annual air concentration and depositional flux