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 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 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.  

New paedomorphic brachiopods from the abyssal zone of the north-eastern Pacific Ocean

Zootaxa ◽  
2013 ◽  
Vol 3613 (3) ◽  
pp. 281-288 ◽  
Author(s):  
MARIA ALEKSANDRA BITNER ◽  
VJACHESLAV P. MELNIK ◽  
OLGA N. ZEZINA
Keyword(s):  
Pacific Ocean ◽  
Deep Sea ◽  
New Genera ◽  
Eastern Pacific Ocean ◽  
The North ◽  
The Pacific ◽  
North Eastern ◽  
The Pacific Ocean ◽  
Abyssal Zone ◽  
Sexually Mature

New Recent very small but sexually mature brachiopods have been found at abyssal depths (4580–4850 m) in the Clarion- Clipperton Zone of the Pacific Ocean. They are characterized by simple (under-developed, juvenile) morphological fea-tures, which are interpreted here as paedomorphic, indicating the importance of heterochrony in the evolution of deep-sea brachiopods. We have described these brachiopods as representing two new genera and species, i.e. Oceanithyris juveni-formis Bitner & Zezina (Family ?Dyscoliidae) and Simpliciforma profunda Bitner & Zezina (Superfamily Gwynioidea).

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.

Seasonal change in distribution of Conger eel Conger myriaster off the Pacific coast south of Tohoku, north-eastern Japan

2004 ◽  
Vol 70 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Satoshi KATAYAMA ◽  
Toshinori ISHIDA ◽  
Yugo SHIMIZU ◽  
Akibumi YAMANOBE
Keyword(s):  
Seasonal Change ◽  
Pacific Coast ◽  
Conger Myriaster ◽  
The Pacific ◽  
North Eastern ◽  
Conger Eel ◽  
Eastern Japan

Report on the 2011 off the Pacific Coast of Tohoku Earthquake: Its Impact, and Control/Monitoring Performances

2012 ◽  
Vol 83 ◽  
pp. 1-8 ◽  
Author(s):  
Akira Nishitani ◽  
Chisa Matsui
Keyword(s):  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Tohoku Earthquake ◽  
High Rise ◽  
The North ◽  
The Pacific ◽  
North Eastern ◽  
Emergency Stop ◽  
And Control

On 11 March 2011, a moment magnitude 9.0 earthquake and its subsequent tsunami struck the Pacific coastal areas in the north-eastern part of Japan (Tohoku district). Iwate, Miyagi and Fukushima prefectures in particular were severely damaged. Some cities, towns and villages in these three have been entirely destroyed by the tsunami, and have not yet fully recovered from those destructions. With the tsunami flood, one of the nuclear power plants in Fukushima Prefecture was catastrophically damaged, resulting in the release of radioactive materials. In this paper, the impacts of this quake are discussed in regard to tsunami, nuclear power plants, high-rise buildings, and response-controlled buildings. In addition, as a successful example of control and monitoring, an emergency stop operation for the Tohoku Shinkansen trains is presented.

scholarly journals On the Yield of Several Kinds of Fishes from the Pacific Coast of North-eastern Japan

1937 ◽  
Vol 5 (5) ◽  
pp. 287-290
Author(s):  
Morisaburô TAUTI ◽  
Kiyobide MIYOSI
Keyword(s):  
Pacific Coast ◽  
The Pacific ◽  
North Eastern ◽  
Eastern Japan
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