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11 · Figure 1. Levels of cesium in water samples taken near the surface ocean between 20. All samples shown contain some pre-Fukushima cesium due to nuclear weapons testing which in the region shown, is less than 2.0 Becquerels per cubic meter (Bq/m3 - light blue circles).A sequence of global ocean circulation models, with horizontal mesh sizes of 0.5°, 0.25° and 0.1°, are used to estimate the long-term dispersion by ocean currents and mesoscale eddies of a slowly decaying tracer (half-life of 30 years, comparable to that of 137 Cs) from the local waters off the Fukushima Dai-ichi Nuclear Power Plants. The tracer was continuously injected into the coastal ...

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Beaches found releasing radioactive cesium into …

Beaches found releasing radioactive cesium into ocean 60 miles from Fukushima "It is as if the sands acted as a 'sponge' that was contaminated in 2011 and is only slowly being depleted," said WHO ... 12 · The research team that was composed of Ken Buesseler, Matthew Charette, and ie Sanial of the Woods Hole Oceanographic Institution and Seiya Nagao of Kanazawa University concluded that high amounts of radioactive cesium that were released into the air in 2011 were mobilized along the coasts by ocean currents.

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True facts about Ocean Radiation and the Fukushima ...

True facts about Ocean Radiation and the Fukushima Disaster Dr. Martini Novem Bequerel cesium Fukushima Radiation radioactivity seafood Sieverts TEPCO tsunami On March 11th, 2011 the Tōhoku earthquake and resulting tsunami wreaked havoc on Japan.Cesium Cs 137 is a radioactive isotope of cesium with an atomic mass of 139 and potential application in radiotherapy. Cesium Cs 137 is prevalent due to its spontaneous production, which occurs as a result of nuclear fission of other radioactive materials, such as uranium and plutonium.This radionuclide has a relatively long half-life, 30 years, and decays by emitting beta particles.

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Cesium: Global Ocean Distribution

Download Citation | Cesium: Global Ocean Distribution | Since the 1950s Cesium (¹³⁷Cs) concentrations in the surface waters of the global ocean have been extensively measured in numerous ...It was a result of the Great Tohoku earthquake and subsequent tsunami. Radioactive cesium was released into the ocean next to the Fukushima plant and the channel of destruction began. Today, 300 tons of radioactive water containing cesium is going into the Pacific Ocean every day. Cesium dissolves in water.

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Using a cesium (137Cs) sedimentary fallout …

Following the line of reasoning of Zalasiewicz et al. (2015), this work evaluates the detection of cesium (137 Cs) in marine sediments from the South Atlantic Ocean coast. The presence of this nuclide in vertical profiles and its spatial distribution throughout the study area may be related to past global atmospheric fallout reported in the ...Since the 1950s Cesium‐137(137 Cs) concentrations in the surface waters of the global ocean have been extensively measured in numerous studies.This article, based on the analysis of the 137 Cs concentrations in the HAM‐global database, summarizes the results of spatial and temporal variations in 137 Cs concentrations in the surface waters (0–10 m) of the global ocean for the period 1957 ...

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Fukushima and Ocean Radioactivity | Oceanography

2  · In this article, the radioactive releases from this event are compared to natural and prior human sources, with particular attention to cesium and radioisotopes. Total releases from Fukushima are not well constrained, with estimates from atmospheric fallout and direct ocean discharge spanning 4 to 90 peta Becquerels (PBq), but are most ...Cesium contamination of the Pacific Ocean; Reports Documents. Ionizing Radiation and Health - Ulm 19.10.2013; ... ¹³⁷Cesium Contamination of the Pacific Ocean after the Fukushima Disaster. Fukushima Daiichi–Derived Radionuclides in the Ocean: Transport, Fate, and Impacts

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CesiumJS

10 · Bring in data from Cesium ion or from some other source, visualize with CesiumJS, and share with users on desktop or mobile. With more than 1,000,000 downloads, CesiumJS powers apps that reach millions of users. CesiumJS is released under the Apache 2.0 license and is free for both commercial and non-commercial use. 26 · Fukushima cesium and cesium were enhanced in flux peaks that, given variations in trap 137 Cs/ 210 Pb ex ratios, are characteristic of material derived from shelf and slope sediments found from <120 to >500 m. These lateral flux peaks are possibly triggered by passing typhoons.

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Fukushima Radiation in U.S. West Coast Tuna

Fukushima Radiation in U.S. West Coast Tuna. In March 2011, in association with the Great Tohoku earthquake and resultant tsunami, there was an accident at the Fukushima Daiichi nuclear power plant on the east coast of Japan.This accident released the radionuclides cesium 134 Cs and 137 Cs into the ocean next to the plant, exposing marine life to radioactive materials.Cesium has a long half-life and persists in the environment. In their analyses of the beaches, the scientists detected not only cesium , which may have come from the Dai-ichi plant or from nuclear weapons tested in the 1950s and1960s, but also cesium , a radioactive form of cesium that can only come only from the 2011 Fukushima accident.

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How Radioactive is Our Ocean?

25 · The concentration of contaminants is expected to be well below limits set by the U.S. EPA for cesium in drinking water (7,400 Bq/m 3) or even the highest level recorded in the Baltic Sea after Chernobyl (1,000 Bq/m 3). RADIATION IN THE OCEAN. The background level of radiation in oceans and seas varies around the globe.We performed gamma-ray analysis to determine the amount of radioactive cesium (134Cs) and cesium (137Cs) in 259 foodstuffs five years after the Fukushima nuclear accident of 2011. Using ...

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Unexpected source of Fukushima-derived radiocesium …

 · Cesium Flux from Beach Groundwater Using a Radium Mass-Balance Model. To estimate the flux of 137 Cs-enriched water to the ocean through submarine groundwater discharge, we constructed a radium isotope mass-balance model. Submarine groundwater discharge was estimated for Iwasawa, Yotsukura, Karasuzaki, and Nakoso beaches, and was based on ...Further data are presented in support of our previous conclusion that the vertical distributions of Cs137 and Sr90 are in accord with the ocean mixing rates demanded by the distribution of natural ra...

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Radioactive material from Fukushima discovered in …

30 · The research team that was composed of Ken Buesseler, Matthew Charette, and ie Sanial of the Woods Hole Oceanographic Institution and Seiya Nagao of Kanazawa University concluded that high amounts of radioactive cesium that were released into the air in 2011 were mobilized along the coasts by ocean currents.cesium into the ocean interior. Some new technolo-gies and techniques concerning emergency monitoring of radioactivity in the ocean environment are also reported, the effectiveness of which has been demon-strated by use in relation to the Fukushima accident. Key words: cesium , cesium , Fukushima Dai-ichi nuclear power plant, Kuroshio ...

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Deep-Sea Research I

15 · including Cesium , were released into the Pacific Ocean. With a half-life of 30.1 years, Cs has the potential to travel large distances within the ocean. Using an ensemble of regional eddy-resolving simulations, this study investigates the long-term ventilation pathways of the leaked Cs in the North Pacific Ocean.Cesium is found throughout the Pacific Ocean and was detectable in all samples collected, while cesium (yellow/orange dots), an indicator of contamination from Fukushima, has been observed ...

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Higher Levels of Fukushima Cesium Detected Offshore ...

Map shows the location of seawater samples taken by scientists and citizen scientists that were analyzed at the Woods Hole Oceanographic Institution for radioactive cesium as part of Our Radioactive Ocean. Cesium is found throughout the Pacific Ocean and was detectable in all samples collected, while cesium (yellow/orange dots), an ... 6 · The largest concern on the cesium (137 Cs) deposition and its soil contamination due to the emission from the Fukushima Daiichi Nuclear Power Plant (NPP) showed up after a massive quake on Ma.Cesium (137 Cs) with a half-life of 30.1 y causes the largest concerns because of its deleterious effect on agriculture and stock farming, and, thus, human life for decades.

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Radioactive cesium from Fukushima on tour of Pacific …

15 · Radioactive cesium from the crippled Fukushima Dai-Ichi nuclear plant is circulating with the currents in the Pacific Ocean and will wash up on Japan's shores again in between 20 and 30 years.The United States performed nuclear testing on Bikini and Enewetak Atolls in the northern Marshall Islands between 19. Fallout from the largest test Bravo, detonated in 1954, spread over a large area, exposing to radiation not only land and ocean but also Marshallese people living in neighboring atolls, including Rongelap and Utirik. Cesium , present in the fallout, has a half ...

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Predicting sediment and cesium discharge from ...

This paper reports simulations of soil erosion, sediment movement, and the resulting migration of cesium (137 Cs) in eastern Fukushima Prefecture after the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident in Japan.We quantified these processes with a simple, novel, and fast simulation model developed previously with the Universal Soil Loss Equation (USLE) and a Geographical ... 26 · TOKYO — Elevated levels of cesium still detected in fish off the Fukushima coast of Japan suggest that radioactive particles from last year’s nuclear disaster have accumulated on the seafloor ...

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