{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1361699994064851840.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1016/j.jenvrad.2011.10.019"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S0265931X11002657?httpAccept=text/xml"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S0265931X11002657?httpAccept=text/plain"}},{"identifier":{"@type":"PMID","@value":"22119284"}}],"dc:title":[{"@value":"Radiation measurements in the Chiba Metropolitan Area and radiological aspects of fallout from the Fukushima Dai-ichi Nuclear Power Plants accident"}],"description":[{"notation":[{"@value":"Large amounts of radioactive substances were released into the environment from the Fukushima Dai-ichi Nuclear Power Plants in eastern Japan as a consequence of the great earthquake (M 9.0) and tsunami of 11 March 2011. Radioactive substances discharged into the atmosphere first reached the Chiba Metropolitan Area on 15 March. We collected daily samples of air, fallout deposition, and tap water starting directly after the incident and measured their radioactivity. During the first two months maximum daily concentrations of airborne radionuclides observed at the Japan Chemical Analysis Center in the Chiba Metropolitan Area were as follows: 4.7 × 10(1) Bq m(-3) of (131)I, 7.5 Bq m(-3) of (137)Cs, and 6.1 Bq m(-3) of (134)Cs. The ratio of gaseous iodine to total iodine ranged from 5.2 × 10(-1) to 7.1 × 10(-1). Observed deposition rate maxima were as follows: 1.7 × 10(4) Bq m(-2) d(-1) of (131)I, 2.9 × 10(3) Bq m(-2) d(-1) of (137)Cs, and 2.9 × 10(3) Bq m(-2) d(-1) of (134)Cs. The deposition velocities (ratio of deposition rate to concentration) of cesium radionuclides and (131)I were detectably different. Radioactivity in tap water caused by the accident was detected several days after detection of radioactivity in fallout in the area. Radiation doses were estimated from external radiation and internal radiation by inhalation and ingestion of tap water for people living outdoor in the Chiba Metropolitan Area following the Fukushima accident."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1381699994064851716","@type":"Researcher","foaf:name":[{"@value":"Hikaru Amano"}]},{"@id":"https://cir.nii.ac.jp/crid/1381699994064851713","@type":"Researcher","foaf:name":[{"@value":"Masakazu Akiyama"}]},{"@id":"https://cir.nii.ac.jp/crid/1381699994064851842","@type":"Researcher","foaf:name":[{"@value":"Bi Chunlei"}]},{"@id":"https://cir.nii.ac.jp/crid/1381699994064851840","@type":"Researcher","foaf:name":[{"@value":"Takao Kawamura"}]},{"@id":"https://cir.nii.ac.jp/crid/1381699994064851714","@type":"Researcher","foaf:name":[{"@value":"Takeshi Kishimoto"}]},{"@id":"https://cir.nii.ac.jp/crid/1381699994064851845","@type":"Researcher","foaf:name":[{"@value":"Tomotaka Kuroda"}]},{"@id":"https://cir.nii.ac.jp/crid/1381699994064851715","@type":"Researcher","foaf:name":[{"@value":"Takahiko Muroi"}]},{"@id":"https://cir.nii.ac.jp/crid/1381699994064851844","@type":"Researcher","foaf:name":[{"@value":"Tomoaki Odaira"}]},{"@id":"https://cir.nii.ac.jp/crid/1381699994064851841","@type":"Researcher","foaf:name":[{"@value":"Yuji Ohta"}]},{"@id":"https://cir.nii.ac.jp/crid/1381699994064851712","@type":"Researcher","foaf:name":[{"@value":"Kenji Takeda"}]},{"@id":"https://cir.nii.ac.jp/crid/1381699994064851843","@type":"Researcher","foaf:name":[{"@value":"Yushu Watanabe"}]},{"@id":"https://cir.nii.ac.jp/crid/1381699994064851846","@type":"Researcher","foaf:name":[{"@value":"Takao Morimoto"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"0265931X"},{"@type":"PISSN","@value":"http://id.crossref.org/issn/18791700"}],"prism:publicationName":[{"@value":"Journal of Environmental Radioactivity"}],"dc:publisher":[{"@value":"Elsevier BV"}],"prism:publicationDate":"2012-09","prism:volume":"111","prism:startingPage":"42","prism:endingPage":"52"},"reviewed":"false","dc:rights":["https://www.elsevier.com/tdm/userlicense/1.0/","https://www.elsevier.com/legal/tdmrep-license","https://doi.org/10.15223/policy-017","https://doi.org/10.15223/policy-037","https://doi.org/10.15223/policy-012","https://doi.org/10.15223/policy-029","https://doi.org/10.15223/policy-004"],"url":[{"@id":"https://api.elsevier.com/content/article/PII:S0265931X11002657?httpAccept=text/xml"},{"@id":"https://api.elsevier.com/content/article/PII:S0265931X11002657?httpAccept=text/plain"}],"createdAt":"2011-12-01","modifiedAt":"2025-10-02","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=Radioactive%20Fallout","dc:title":"Radioactive Fallout"},{"@id":"https://cir.nii.ac.jp/all?q=Water%20Pollutants,%20Radioactive","dc:title":"Water Pollutants, Radioactive"},{"@id":"https://cir.nii.ac.jp/all?q=Time%20Factors","dc:title":"Time Factors"},{"@id":"https://cir.nii.ac.jp/all?q=Geography","dc:title":"Geography"},{"@id":"https://cir.nii.ac.jp/all?q=Drinking%20Water","dc:title":"Drinking Water"},{"@id":"https://cir.nii.ac.jp/all?q=History,%2021st%20Century","dc:title":"History, 21st Century"},{"@id":"https://cir.nii.ac.jp/all?q=Disasters","dc:title":"Disasters"},{"@id":"https://cir.nii.ac.jp/all?q=Iodine%20Radioisotopes","dc:title":"Iodine Radioisotopes"},{"@id":"https://cir.nii.ac.jp/all?q=Spectrometry,%20Gamma","dc:title":"Spectrometry, Gamma"},{"@id":"https://cir.nii.ac.jp/all?q=Japan","dc:title":"Japan"},{"@id":"https://cir.nii.ac.jp/all?q=Air%20Pollutants,%20Radioactive","dc:title":"Air Pollutants, Radioactive"},{"@id":"https://cir.nii.ac.jp/all?q=Cesium%20Radioisotopes","dc:title":"Cesium Radioisotopes"},{"@id":"https://cir.nii.ac.jp/all?q=Radiation%20Monitoring","dc:title":"Radiation Monitoring"},{"@id":"https://cir.nii.ac.jp/all?q=Tsunamis","dc:title":"Tsunamis"},{"@id":"https://cir.nii.ac.jp/all?q=Earthquakes","dc:title":"Earthquakes"},{"@id":"https://cir.nii.ac.jp/all?q=Cities","dc:title":"Cities"},{"@id":"https://cir.nii.ac.jp/all?q=Radioactive%20Hazard%20Release","dc:title":"Radioactive Hazard Release"}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050001202547868416","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Interception of the Fukushima reactor accident-derived137Cs 134Cs and 131I by coniferous forest canopies"},{"@value":"Interception of the Fukushima reactor accident‐derived<sup>137</sup>Cs, <sup>134</sup>Cs and <sup>131</sup>I by coniferous forest canopies"},{"@value":"Interception of the Fukushima reactor accident-derived <sup>137</sup>Cs, <sup>134</sup>Cs and <sup>131</sup>I by coniferous forest canopies"},{"@value":"Interception of the Fukushima reactor accident‐derived 137Cs, 134Cs and 131I by coniferous forest canopies"},{"@value":"Interception of the Fukushima reactor accident-derived 137Cs, 134Cs and 131I by coniferous foorest canopies"},{"@value":"Interception of the Fukushima reactor accident-derived Cs-137, Cs-134 and I-131 by coniferous forest canopies"},{"@value":"Interception of the Fukushima reactor accident-derived 137Cs, 134Cs, 131I by coniferous forest canopies"},{"@value":"Interception of the Fukushima reactor accident−derived 137Cs, 134Cs and 131I by coniferous canopies"},{"@value":"Intefception of the Fukushima reactor accident-derived 137Cs, 134Cs and 131I by coniferous forest canopies"}]},{"@id":"https://cir.nii.ac.jp/crid/1050001338271827456","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Environmental radiation at Izu-Oshima after the Fukushima Daiichi nuclear power plant 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the atmospheric release for the Fukushima Daiichi Nuclear Power Station accident by coupling simulations of an atmospheric dispersion model with an improved deposition scheme and oceanic dispersion model"}]},{"@id":"https://cir.nii.ac.jp/crid/1360848656327276032","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Determination of atmospheric radiocesium on filter tapes used at automated SPM monitoring stations for estimation of transport pathways of radionuclides from Fukushima Dai-ichi Nuclear Power Plant"}]},{"@id":"https://cir.nii.ac.jp/crid/1360848659164525952","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Determining the initial Fukushima reactor accident-derived cesium-137 fallout in forested areas of municipalities in Fukushima Prefecture"}]},{"@id":"https://cir.nii.ac.jp/crid/1361131418854118656","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Spatial distributions of atmospheric concentrations of radionuclides on 15 March 2011 discharged by the Fukushima Dai-Ichi Nuclear Power Plant Accident estimated from NaI(Tl) pulse height distributions measured in Ibaraki Prefecture"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204259991168","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Aging Effect of <sup>137</sup>Cs Obtained from <sup>137</sup>Cs in the Kanto Loam Layer from the Fukushima Nuclear Power Plant Accident and in the Nishiyama Loam Layer from the Nagasaki A-bomb Explosion"},{"@value":"Aging Effect of ¹³⁷Cs Obtained from ¹³⁷Cs in the Kanto Loam Layer from the Fukushima Nuclear Power Plant Accident and in the Nishiyama Loam Layer from the Nagasaki A-bomb Explosion"}]},{"@id":"https://cir.nii.ac.jp/crid/1390013574421390848","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Uptake of <sup>131</sup>I, <sup>134</sup>Cs and <sup>137</sup>Cs in tulip (<i>Tulipa gesneriana</i> L.) after the Fukushima Daiichi nuclear accident and their translocation from its above ground parts to the bulb"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282679132103040","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Rapid Method of Gamma-ray Does Rates for Distinction between Natural and Artificial Radioactive Nuclides Using Portable NaI(Tl) Scintillation Measurement System"},{"@language":"ja","@value":"可搬型NaIシンチレーション測定装置を用いた環境γ線線量率の天然及び人工放射性核種の迅速弁別法"},{"@language":"ja-Kana","@value":"カハンガタ NaI シンチレーション ソクテイ ソウチ オ モチイタ カンキョウ γセンセンリョウリツ ノ テンネン オヨビ ジンコウ ホウシャセイカクシュ ノ ジンソク ベンベツホウ"},{"@value":"Rapid method of gamma-ray dose rates for distinction between natural and artificial radioactive nuclides using portable NaI(Tl) scintillation measurement system"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282679132312064","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Early Radiological Impacts of Fukushima Daiichi Nuclear Power Plant Accident Fallout in Fukuoka Prefecture"},{"@language":"ja","@value":"福岡県における福島第一原子力発電所事故初期の放射線影響評価"},{"@language":"ja-Kana","@value":"フクオカケン ニ オケル フクシマ ダイイチ ゲンシリョク ハツデンショ ジコ ショキ ノ ホウシャセン エイキョウ ヒョウカ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282679132985216","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"東京大学駒場1キャンパスにおける福島第一原発事故由来の放射性ヨウ素の動態"},{"@language":"en","@value":"Dynamics of Radioiodine Originated from Fukushima Dai-ichi Nuclear Power Plant Accident in Komaba 1 Campus, the University of Tokyo"},{"@language":"ja-Kana","@value":"トウキョウ ダイガク コマバ 1 キャンパス ニ オケル フクシマ ダイイチ ゲンパツ ジコ ユライ ノ ホウシャセイ ヨウソ ノ ドウタイ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282679530881152","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"One-year monitoring of airborne radionuclides in Wako, Japan, after the Fukushima Dai-ichi nuclear power plant accident in 2011"}]},{"@id":"https://cir.nii.ac.jp/crid/1390565134828745984","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Environmental Dynamics of Radiocaesium and Long-term Prediction of Transfer in Terrestrial Environment—Transfer and Cycling of Radiocaesium in Forest Environment—"},{"@language":"ja","@value":"陸域における放射性セシウムの環境動態と長期移行予測—森林における放射性セシウムの移行と循環—"},{"@value":"福島第一原発事故に伴う放射性核種の長期環境動態と将来予測 陸域における放射性セシウムの環境動態と長期移行予測 : 森林における放射性セシウムの移行と循環"},{"@language":"ja-Kana","@value":"フクシマ ダイイチ ゲンパツ ジコ ニ トモナウ ホウシャセイカクシュ ノ チョウキ カンキョウ ドウタイ ト ショウライ ヨソク リクイキ ニ オケル ホウシャセイ セシウム ノ カンキョウ ドウタイ ト チョウキ イコウ ヨソク : シンリン ニ オケル ホウシャセイ セシウム ノ イコウ ト ジュンカン"}]},{"@id":"https://cir.nii.ac.jp/crid/1391412881285760128","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Effect of Chloride and Sulfate in the Immobilization of Cs-137 in C-S-H Gel"}]},{"@id":"https://cir.nii.ac.jp/crid/2051433316884769280","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Atmospheric radioactivity over Tsukuba, Japan : a summary of three years of observations after the FDNPP 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