scholarly journals Radionuclide contamination in flood sediment deposits in the coastal rivers draining the main radioactive pollution plume of Fukushima Prefecture, Japan (2011–2020)

2021 ◽  
Author(s):  
Olivier Evrard ◽  
Caroline Chartin ◽  
J. Patrick Laceby ◽  
Yuichi Onda ◽  
Yoshifumi Wakiyama ◽  
...  
Keyword(s):  
Nuclear Power ◽  
Radioactive Fallout ◽  
Artificial Radionuclide ◽  
Radionuclide Contamination ◽  
Sediment Deposits ◽  
Northeastern Japan ◽  
The Pacific ◽  
Coastal Rivers ◽  
The Pacific Ocean ◽  
River Catchments

Abstract. Artificial radionuclides including radiocesium (134Cs and 137Cs) and radiosilver (110mAg) were released into the environment following the Fukushima Dai-ichi Nuclear Power Plant accident in March 2011. These particle-bound substances deposited on soils of Northeastern Japan located predominantly within a ~3000 km2 radioactive fallout plume and drained by several coastal rivers to the Pacific Ocean. The current dataset that can be accessed at https://doi.pangaea.de/10.1594/PANGAEA.928594 compiles gamma-emitting artificial radionuclide activities measured in 782 sediment samples collected from 27 to 71 locations during 16 fieldwork campaigns conducted in Japan between November 2011 and November 2020 in river catchments draining the main radioactive plume. This database may be useful to evaluate and anticipate the post-accidental redistribution of radionuclides in the environment and for the spatial validation of models simulating the transfer of radiocesium across continental landscapes.

scholarly journals Radionuclide contamination in flood sediment deposits in the coastal rivers draining the main radioactive pollution plume of Fukushima Prefecture, Japan (2011–2020)

2021 ◽  
Vol 13 (6) ◽  
pp. 2555-2560
Author(s):  
Olivier Evrard ◽  
Caroline Chartin ◽  
J. Patrick Laceby ◽  
Yuichi Onda ◽  
Yoshifumi Wakiyama ◽  
...  
Keyword(s):  
Nuclear Power ◽  
Artificial Radionuclide ◽  
Radionuclide Contamination ◽  
Sediment Deposits ◽  
The Pacific ◽  
North Eastern ◽  
Coastal Rivers ◽  
The Pacific Ocean ◽  
River Catchments ◽  
Eastern Japan

Abstract. Artificial radionuclides including radiocesium (134Cs and 137Cs) and radiosilver (110mAg) were released into the environment following the Fukushima Dai-ichi nuclear power plant accident in March 2011. These particle-bound substances deposited on soils of north-eastern Japan, located predominantly within a ∼3000 km2 radioactive fallout plume and drained by several coastal rivers to the Pacific Ocean. The current dataset (Evrard et al., 2021), which can be accessed at https://doi.org/10.1594/PANGAEA.928594, compiles gamma-emitting artificial radionuclide activities measured in 782 sediment samples collected from 27 to 71 locations across catchments draining ∼6450 km2 during 16 fieldwork campaigns. These campaigns were conducted in Japan between November 2011 and November 2020 in river catchments draining the main radioactive plume. This database may be useful to evaluate and anticipate the post-accidental redistribution of radionuclides in the environment and for the spatial validation of models simulating the transfer of radiocesium across continental landscapes.

scholarly journals Testing for presence of radioactivity in BC Pacific Ocean’s seafood supply

2014 ◽  
Author(s):  
Amy Luan ◽  
BCIT School of Health Sciences, Environmental Health ◽  
Bobby Sidhu ◽  
Abderrachid Zitouni
Keyword(s):  
Pacific Ocean ◽  
Gamma Radiation ◽  
Nuclear Power ◽  
Gamma Ray ◽  
Gamma Ray Spectrometer ◽  
The Pacific ◽  
Two Samples ◽  
Seafood Products ◽  
The Pacific Ocean ◽  
Fish And Shellfish

  Abstract: Due to the Fukushima Daiichi Nuclear power plant incident in March 2011, large quantities of contaminated water were released to the Pacific Ocean in Japan. The severity of contamination on the marine environment is unclear, therefore, the public is concerned with the possible internal radiation exposure from ingesting contaminated seafood products caught in the Pacific Ocean. This study was aimed to investigate the presence or absence of gamma radioactivity in commonly consumed seafood products from B.C. In total, ten different species of fish and three different species of shellfish were selected for analysis. For each species of fish, two samples were collected and each sample was from a different local seafood market. For each species of shellfish, ten samples were collected from three different sources. Using the portable GR-135 Plus gamma ray spectrometer, the samples were tested and analyzed for the presence of Fukushima radionuclides, particularly Cesium-137 (Cs-137) and Cesium- 134 (Cs-134).Based on the analyzed fish and shellfish, no gamma radiation was detected. The detector did not identify any gamma radiation over the normal background readings.  

Pacific Solidarity and Atomic Aggression

2017 ◽  
Author(s):  
Simon Avenell
Keyword(s):  
Pacific Ocean ◽  
Radioactive Waste ◽  
Industrial Pollution ◽  
Nuclear Power ◽  
Power Plants ◽  
Radioactive Material ◽  
Mariana Trench ◽  
The Pacific ◽  
The Pacific Ocean ◽  
Ocean Dumping

This chapter traces the emergence and evolution of a transnational movement opposing the planned dumping of Japanese radioactive waste material in the Pacific Ocean near the Mariana Trench. With its growing stockpile of radioactive waste from nuclear power plants, in the 1970s Japanese officials hatched plans to dump radioactive material in steel canisters in the Pacific. In response, activists on islands in Micronesia mobilized in staunch opposition in the late 1970s. They were joined by Japanese antinuclear groups who brought Pacific activists to Japan to give speeches and lobby officials. The chapter explores how this transnational struggle was able to force a postponement and ultimately the abandonment of the ocean dumping plan. As with movements opposing industrial pollution export in the 1970s, this mobilization opened Japanese activists’ eyes to the nuclear victimization of Pacific peoples and, in turn, forced a reconsideration of Japan as the only victim of radiation worldwide.

Radioactive fallout on the far-eastern shoreline of the Pacific Ocean in 1962?1963

1965 ◽  
Vol 18 (3) ◽  
pp. 386-388
Author(s):  
E. I. Markichev ◽  
A. D. Shramchenko ◽  
A. S. Lapardina ◽  
V. V. Peretti ◽  
E. I. Vasil'kov ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Radioactive Fallout ◽  
The Pacific ◽  
The Pacific Ocean ◽  
Far Eastern

scholarly journals TSUNAMIS ALONG WEST COAST OF LUZON, PHILIPPINES

1980 ◽  
Vol 1 (17) ◽  
pp. 40 ◽  
Author(s):  
R.L. Wiegel
Keyword(s):  
West Coast ◽  
Nuclear Power ◽  
The Philippines ◽  
Good Evidence ◽  
The West ◽  
Sulu Sea ◽  
The Pacific ◽  
Engineering Study ◽  
Manila Bay ◽  
The Pacific Ocean

A detailed engineering study was made by Ebasco Services, Inc., (1977), for a proposed nuclear power plant in the Napot Point region of Bataan, between the entrance to Manila Bay and Subic Bay, Republic of the Philippines (about 14°- 37-12'N, 120°- 18-3/4'E), Figure 1. As a part of the oceanographic portion of this work, a study was made by the writer of the characteristics of tsunamis that had occurred in the region, and the statistics of occurrence (Wiegel, 1976). The study of tsunamis has been updated to the present time (May, 1980). The location of the site is such that the large tsunamis generated in some areas of the Pacific Ocean (such as off the coasts of Chile, Alaska, Japan and Kamchatka) are not likely to reach Napot Point with any appreciable amplitude (see, for example, Wiegel, 1976). There is good evidence that this is the case. Owing to the relative stability from the standpoint of earthquakes (aseismic) of Borneo, the Malaya Peninsula, most of Indochina and the intervening China Sea (Gutenberg and Richter, 1949, pp. 82 and 93), there is probably little, if any, chance of tsunamis being generated in this region; this appears to be a fact (Berninghausen, 1969). The great eruption of Krakatoa and the tsunami generated by it was not noticed on tide gages at either Singapore or Hong Kong, so that it would be reasonable that it would not have been detected at Manila (Wharton, 1888). Also, the large tsunamis that have been generated in the Sulu Sea and the Celebes Sea do not seem to reach the site with any appreciable amplitude. Thus, the tsunamis of importance to the site are those which will be generated in the local seas off the west coast of Luzon. In order to establish this fact, information is presented on a number of tsunamis generated in other regions, especially those generated in the seas off the west coast of the Philippine Islands.

scholarly journals Modelling the Effects of Radioactive Effluent onThunnus orientalisandOncorhynchus gorbuscha

2013 ◽  
Vol 2013 ◽  
pp. 1-12
Author(s):  
Zhixiong Chen ◽  
Yi Ding ◽  
Rusty Laracuenti ◽  
Bernard Lipat
Keyword(s):  
Nuclear Power ◽  
Pink Salmon ◽  
Marine Species ◽  
Oncorhynchus Gorbuscha ◽  
Thunnus Orientalis ◽  
Radioactive Effluent ◽  
The Pacific ◽  
Spatial Dimensions ◽  
The Pacific Ocean ◽  
Marine Wildlife

The contamination of the Pacific Ocean by the radioactive pollutants released from the Fukushima Daiichi Nuclear Power Plant has raised legitimate concerns over the viability of marine wildlife. We develop a modified Crank-Nicholson method to approximate a solution to the diffusion-advection-decay equation in time and three spatial dimensions to explore the extent of the effects of the radioactive effluent on two marine species: the Pacific Bluefin Tuna (Thunnus orientalis) and the Pacific Pink Salmon (Oncorhynchus gorbuscha).

scholarly journals Present Status of Marine Radioecology in Bali and Lombok Waters: Distribution Study of 137Cs and Natural Radionuclides in Lombok Strait

Omni-Akuatika ◽  
2017 ◽  
Vol 13 (2) ◽  
Author(s):  
Deddy Irawan Permana Putra ◽  
Heny Suseno
Keyword(s):  
Pacific Ocean ◽  
Natural Radionuclides ◽  
Natural Radionuclide ◽  
Average Concentration ◽  
Precipitation Process ◽  
Sampling Location ◽  
Artificial Radionuclide ◽  
Distribution Study ◽  
The Pacific ◽  
The Pacific Ocean

Abstract Lombok strait is outflow of water masses from the Pacific Ocean to the Indian Ocean by Indonesian Throughflow (ITF). Radioecology studies in these waters were including monitoring of natural and artificial radionuclide. This study aims to obtain baseline data of artificial radionuclide 137Cs that entering from the Pacific Ocean through the Makassar Strait. The sampling location were covered territorial waters of Bali and Lombok. A large volume sample preparation for the 137Cs analysis were performed by co-precipitation process using K4Fe(CN)6 and CuCl2 at pH 8-9. Measurement of the concentration activity of natural radionuclides and 137Cs were using Gamma HPGe spectrometer with 20 – 25 % efficiency. The result of this study indicate the average concentration of 40K 226Ra 212Pb 214Bi 228Ac 214Pb and 137Cs in the sediments of Strait Bali waters respectively 165.16 Bq kg-1, 25.11 Bq kg-1, 8.36 Bq kg-1, 7.51 Bq kg-1, 7.05 Bq kg-1, 6.68 Bq kg-1 and the lowest of 0.15 Bq kg-1. In the waters of Lombok concentration activity of radionuclides 40K 226Ra 212Pb 214Bi 228Ac 214Pb and 137Cs in the sediments was 172.00 Bq kg-1, 25.88 Bq kg-1, 10.10 Bq kg-1, 6.50 Bq kg-1, 6.39 Bq kg-1, 5.70 Bq kg-1 and 0,162 Bq kg-1. The concentration activity of 137Cs in seawater of Bali and Lombok respectively was 0.113 Bq m-3 and 0.644 Bq m-3. Keyword : Natural Radionuclide, 137Cs, Lombok Strait

AMS analyses of I-129 from the Fukushima Daiichi nuclear accident in the Pacific Ocean waters of the Coast La Jolla – San Diego, USA

2015 ◽  
Vol 17 (5) ◽  
pp. 932-938 ◽  
Author(s):  
C. Stan-Sion ◽  
M. Enachescu ◽  
A. R. Petre
Keyword(s):  
Mass Spectrometry ◽  
Experimental Study ◽  
Nuclear Power ◽  
Pacific Coast ◽  
Radionuclide Content ◽  
The Pacific ◽  
The Usa ◽  
The Pacific Ocean ◽  
Fukushima Daiichi ◽  
La Jolla

This paper presents the results of an experimental study we performed by using the Accelerator Mass Spectrometry (AMS) method with iodine 129 (T1/2 = 15.7 My), to determine the increase of the radionuclide content in the USA West Pacific Coast waters, two years after the March 2011 Fukushima Daiichi nuclear power plant accident.

Sign in / Sign up

Export Citation Format

Share Document