210Pb and 137Cs chronology of sediments from small, shallow Arctic lakes☆
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Cited by (54)
The study of Canadian Arctic freshwater system toward radioactive contamination - status in 1999
2021, Journal of Environmental RadioactivityCitation Excerpt :The sedimentation and mass accumulation rates by Eriksson et al. (2004) for Thule lakes, Greenlandranged between 0.03 and 0.16 cm/y and 0.05–0.82 kg·m−2·y−1, respectively. In turn, analysis of seven sediment cores from two lakes on the Belcher Islands in south-eastern Hudson Bay found that sediment redistribution by ice was a major process in one of the lakes (Hermanson, 1990), and MAR oscillated between 0.259 and 0.309 kg·m−2·y−1. Besides, at sites without redeposition, mass accumulation rates varied from 0.044 to 0.180 kg·m−2·y−1.
Mineralogical and geochemical composition of Late Holocene bottom sediments of Lake Onego
2020, Journal of Great Lakes ResearchCitation Excerpt :The analysis for 210Pb was made by gamma-spectrometry on a planar semiconductor detector with “ultrapure-Pb,W” protection from natural radiation (for details of the methods see ESM Appendix S3). Sediment accumulation rates are determined from excess 210Pb activities that decreased exponentially below a zone of uniform activity (surface mixed layer) using a constant sedimentation rate model described by the following articles (Appleby et al., 1979; Hermanson, 1990; McCall et al., 1984; Gavshin et al., 1999). In the equation, deep mixing is assumed to be negligible, hence the calculated sediment accumulation rate represents the upper limit to the true sediment accumulation rate.
Variability in <sup>210</sup>Pb and <sup>210</sup>Po partition coefficients (K<inf>d</inf>) along the US GEOTRACES Arctic transect
2020, Marine ChemistryCitation Excerpt :From a synthesis of large amount of data, the 210Pb annual fallout fluxes were estimated to be 6.08 ± 5.75 dpm m-2 day−1 at 60–70°N and 3.28 ± 2.46 dpm m-2 y−1 at 70–80°N (Baskaran, 2011). These low values in the Arctic are due to reduced rates of radon exhalation from limited soil coverage and low precipitation (Hermanson, 1990; Baskaran and Naidu, 1995; Smith et al., 2003; Chen et al., 2012). The coastal stations were found to have an excess of dissolved 210Po with respect to 210Pb throughout the water column.
Characterization of organic matter in a sediment Core near the Mataripe refinery, Bahia-Brazil
2016, Marine Pollution BulletinApplication of Stable Isotopes and Radioisotopes in Environmental Forensics
2014, Introduction to Environmental Forensics: Third EditionImportance of lateral transport processes to <sup>210</sup>Pb budget in the eastern Chukchi Sea during summer 2003
2012, Deep-Sea Research Part II: Topical Studies in OceanographyCitation Excerpt :Indeed, a significant linear relationship was observed between the scavenging fluxes of 210Pb (FPb) and the POC inventories in the water column (Fig. 5), further demonstrating the active role of biological pump in particle scavenging in the eastern Chukchi Sea. Atmospheric deposition rates of 210Pb are low in the Arctic region owing to reduced rates of radon exhalation from the limited soil coverage and low rates of precipitation (Dibb, 1990; Hermanson, 1990). The reported Fatm ranged from 6.7 to 45 Bq/m2/a (Baskaran and Naidu, 1995; Cornwell, 1985; Weiss and Naidu, 1986; Nijampurkar and Clausen, 1990; Dibb, 1990; Huh et al., 1997).
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Contribution no. 338, Center for Great Lakes Studies.
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Present address: Illinois State Water Survey, 2204 Griffith Drive, Champaign, IL 61820, USA.