Worldwide isotope ratios of the Fukushima release and early-phase external dose reconstruction

Chaisan, Kittisak; Smith, J.T.; Bossew, Peter; Kirchner, Gerald; Laptev, Gennady

doi:10.1038/srep02520

Cited by 21 publications

(25 citation statements)

References 29 publications

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“…5 along with model results. It shows that the present simulation captures the arrival of radioactive plume at this location after ~10 days, and the results are in agreement with the measurements (Chaisan et al, 2013) (Chaisan et al, 2013). model performance at 5 out of 9 locations, RN70, RN75, RN53, RN63 and RN61; however few sites (RN38, RN34) are poorly correlated (Table 3).…”

Section: Comparison Of Model Results With Measurementssupporting

confidence: 78%

“…Since, Tokai-mura is nearer to the emission (FDNPP) in the global scale, we compare some of the simulation data with measurements at far locations such as Ukraine (Chaisan et al, 2013) and other CTBT locations published in the literature (CTBTO, 2011 Cs air concentrations for a particular site (Ukraine, 51.0°N, 30.0°E) is shown in Fig. 5 along with model results.…”

Section: Comparison Of Model Results With Measurementsmentioning

confidence: 99%

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Simulating Long Range Transport of Radioactive Aerosols Using a Global Aerosol Transport Model

Sarkar

Anand

Singh

et al. 2017

Aerosol Air Qual. Res.

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Study of long range transport of radioactive gases and aerosols is necessary to estimate radiological impact to the members of public and environment during nuclear reactor accidents. In the present work, an attempt has been made to employ an atmospheric circulation model that predicts meteorological parameters at the regional and global scales, and a transport model that utilizes these meteorological parameters for the radioactive aerosol dispersion. Non-hydrostatic Icosahedral Atmospheric Model (NICAM) coupled with Spectral Radiation-Transport Model for Aerosol Species (SPRINTARS) is adapted to fulfil this objective, which is used for simulating effects of conventional aerosols on atmospheric pollution and climate system. As an illustrative case study, global simulation is carried out for a horizontal resolution of ~110 km to model the dispersion of radioactive aerosol ( Continuous run of this system will help in predicting the activity concentration in forecast mode, and it may be used for decision support, particularly in the case of long range transport (> 100 km).

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Section: Comparison Of Model Results With Measurementssupporting

confidence: 78%

Section: Comparison Of Model Results With Measurementsmentioning

confidence: 99%

Simulating Long Range Transport of Radioactive Aerosols Using a Global Aerosol Transport Model

Sarkar

Anand

Singh

et al. 2017

Aerosol Air Qual. Res.

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“…The mean (± SD) Cs ratios of 1.03 ± 0.10 and 0.99 ± 0.21 for air particulates in the areas within 80 km and between 80 and 2000 km of FDNPS, respectively, which were reported by Chaisan et al (2013). The radiocesium deposition rate per unit area around NILGS after the accident ranged from 100 to 300 kBq m −2 based on an airborne monitoring survey using a corrected distribution map of radiocesium in the soil that was prepared on July 16, 201116, (MEXT 2011.…”

Section: Discussionmentioning

confidence: 80%

Weathering half-life of radioactive cesium for winter rye (Secale cerealeL.) and Italian ryegrass (Lolium multiflorumLam.) directly contaminated by the 2011 Fukushima Daiichi Nuclear Power Station accident

Sunaga

Harada

Kawachi

2015

Soil Science and Plant Nutrition

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Changes in radioactive cesium (radiocesium) concentrations in winter rye (Secale cereale L.) and Italian ryegrass (Lolium multiflorum Lam.) grown in fields contaminated by the accident at the Fukushima Daiichi Nuclear Power Station of the Tokyo Electric Power Company were examined to clarify the half-lives of weathering as an environmental process that removed radiocesium during the early stages after its deposition. The radiocesium concentrations in the rye plants that resulted from direct deposition of fallout in 2011 decreased greatly from 140.5 kBq kg -1 dry weight (DW) on March 31 to 13.2 kBq kg -1 DW on April 27, during the 27 d between the vegetative growth and heading stages. The amounts of rye radiocesium per unit area decreased simultaneously, from 69.8 kBq m -2 to 12.6 kBq m -2. The radiocesium concentrations in rye were half and a quarter of those in Italian ryegrass during the vegetative and heading stages, respectively, although the radiocesium concentrations in Italian ryegrass also decreased with plant growth. The values of the weathering half-life of 8.0 and 11.0 d for the radiocesium concentration per unit DW and amount per unit area in rye were approximately half those of Italian ryegrass, at 14.1 and 23.1 d, respectively. Therefore, less radiocesium-contaminated material seemed to be retained on the plant surface of rye than on Italian ryegrass. The radiocesium concentrations of rye harvested in the same experimental fields in the year following the accident were below the value defined in the February 2012 provisional regulation for cattle roughage (100 Bq kg -1 at a water content of 0.8 kg kg -1).

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“…Isotopic ratio 134 Cs/ 137 Cs at the time of initial fallout. A value of 0.56 was reported by [34] for the Chernobyl NPP fallout, and 1.1 for the Fukushima Daiichi NPP release [35]. The value for FR used here = 0.56.…”

Section: Frmentioning

confidence: 88%

Introduction of a method to calculate cumulative age- and gender-specific lifetime attributable risk (LAR) of cancer in populations after a large-scale nuclear power plant accident

et al. 2020

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The effect of age and gender in risk estimates related to long-term residence in areas contaminated by nuclear power plant fallout was evaluated by applying the lifetime attributable risk (LAR) concept to an existing exposure model that was previously used for cumulative effective dose estimates. In this study, we investigated the influence of age distribution on the number of cancer cases by applying five different age distributions from nuclear powerproducing countries (India, Japan, South Korea, and the United States), and Egypt because of intentions to develop nuclear power. The model was also used to estimate the effective dose and gender-specific LAR as a function of time after fallout for the offspring of the population living in 137 Cs fallout areas. The principal findings of this study are that the LAR of cancer incidence (excluding non-fatal skin cancers) over 70 y is about 4.5 times higher for newborn females (5.4% per MBq m-2 of initial 137 Cs ground deposition) than the corresponding values for 30 y old women (1.2% per MBq m-2 137 Cs deposition). The cumulative LAR for newborn males is more than 3 times higher (3.2% versus 1.0% per MBq m-2 137 Cs deposition). The model predicts a generally higher LAR for women until 50 y of age, after which the gender difference converges. Furthermore, the detriment for newborns in the fallout areas initially decreases rapidly (about threefold during the first decade) and then decreases gradually with an approximate half-time of 10-12 y after the first decade. The age distribution of the exposed cohort has a decisive impact on the average risk estimates, and in our model, these are up to about 65% higher in countries with high birth rates compared to low birth rates. This trend implies larger average lifetime attributable risks in countries with a highly proportional younger population. In conclusion, the large dispersion (up to a factor of 4 between newborns and 30 y olds) in the lifetime detriment per unit ground deposition of 137 Cs over gender and age in connection with accidental nuclear releases justifies the

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Worldwide isotope ratios of the Fukushima release and early-phase external dose reconstruction

Cited by 21 publications

References 29 publications

Simulating Long Range Transport of Radioactive Aerosols Using a Global Aerosol Transport Model

Simulating Long Range Transport of Radioactive Aerosols Using a Global Aerosol Transport Model

Weathering half-life of radioactive cesium for winter rye (Secale cerealeL.) and Italian ryegrass (Lolium multiflorumLam.) directly contaminated by the 2011 Fukushima Daiichi Nuclear Power Station accident

Introduction of a method to calculate cumulative age- and gender-specific lifetime attributable risk (LAR) of cancer in populations after a large-scale nuclear power plant accident

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