Study of provenance identification of Moshio by environmental radioactivity

• Project/Area Number: 20700662
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Cultural property science
• Research Institution: Kyoto University
• Principal Investigator: OHTA Tomoko Kyoto University, 原子炉実験所, 助教 (30373020)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000); Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2008: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
• Keywords: 環境放射能 / 塩 / 海水 / 海藻 / 汚染 / 核実験 / 製塩 / 同位体 / 製作技法 / 藻塩

Research Abstract

The origin of the substance that adhered to the wooden tub at salt-production site was attempted to be determined by examining the environmental radioactivity in the substance by environmental radioactivity and isotopes. It was suggested that the adhesion could originate from not only seawater but also the seaweed and/or seagrass. Furthermore, the base that judged provenance identification of Moshio was obtained from some trace elements of the seaweed.
In addition, iodine isotopes, ^<127>I and ^<129>I, were isolated from marine algal samples to obtain ^<129>I/^<127>I ratios. The ^<129>I/^<127>I ratio in algae collected from 1987 was 100-1000 times as high as the ratio measured in algae from before 1945. This dramatic increase in ^<129>I/^<127>I ratio after 1945 was attributed to human activity.

Research Products

• [Journal Article] Radionuclide in ancient relics obtained from the Matsuzaki site and the Hirohata shellmound on the Pacific coast of Japan. (2010)
  • Author(s): Ohta T., Mahara Y., Kubota T., Saito Y., Fukutani S., Fujii T., Ando A., Nakata E., Nakano T., Abe Y., Tatematsu A.
  • Journal Title: Radiocarbon Volume: 52 Pages: 526-533
  • Peer Reviewed
• [Journal Article] Radionuclides on ancient relics obtained from the Matsusaki site and the Hirohata shell mound on the Pacific coast of Japan (2010)
  • Author(s): T.Ohta, Y.Mahara, T.Kubota, Y.Saito, S.Fukutani, T.Fujii, A.Ando, E.Nakata, T.Nakano, Y.Abe, A.Tatematsu
  • Journal Title: Radiocarbon 52
  • Peer Reviewed
• [Journal Article] Isotopic investigations for the origin of relic from the Matsusaki site, Japan (2009)
  • Author(s): T.Nakano-Ohta, T.Kubota, A.Ando, T.Fujii, S.Fukutani, E.Nakata, T.Nakano, Y.Mahara
  • Journal Title: Appl. Radiat.Isot. 67 Pages: 1479-1483
  • NAID: 120002381086
  • Peer Reviewed
• [Journal Article] Separation of dissolved Kr from water sample with hollow fiber membrane (2009)
  • Author(s): T.Ohta, Y.Mahara, N.Momoshima, N.Inoue, R.Ikawa, M.Taniguchi, J.Shimada
  • Journal Title: J.Hydrol. 376 Pages: 152-158
  • Peer Reviewed
• [Journal Article] Isotopic investigations for the origin of relic from the Matsusaki site, Japan (2009)
  • Author(s): Fukutani, S., Nakata, E.., Nakano, T. and Mahara
  • Journal Title: Appl. Radiat.Isot.
  • NAID: 120002381086
  • Peer Reviewed
• [Journal Article] 松崎遺跡の遺物に付着物した付着物の起源に関する考察 (2008)
  • Author(s): 太田朋子、窪田卓見、安渡敦史、藤井俊行、福谷哲、中田英二、中野教則、馬原保典
  • Journal Title: Proceedings of the Seventh Workshop on Environmental Radioactivity 9 Pages: 149-154
  • Peer Reviewed
• [Journal Article] (2009) Isotopic investigations for the origin of relic from the Matsuzaki site, Japan.
  • Author(s): Nakano-Ohta T., Kubota T., Ando A., Fujii T., Fukutani S., Nakata E., Nakano T., Mahara Y.
  • Journal Title: Applied Radiation and Isotopes 67 Pages: 1479-1483
  • Peer Reviewed
• [Journal Article] (2010) Radionuclide in ancient relics obtained from the Matsuzaki site and the Hirohata shellmound on the Pacific coast of Japan.
  • Author(s): Ohta T., Mahara Y., Kubota T., Saito Y., Fukutani S., Fujii T., Ando A., Nakata E., Nakano T., Abe Y., Tatematsu A.
  • Journal Title: Radiocarbon 52 Pages: 526-533
  • Peer Reviewed
• [Journal Article] Concentrations and activity ratios of^<226>Ra and^<228>Ra in surface seawater along the Pacific coast of Japan
  • Author(s): Ohta T, Mahara Y, Kubota T, Sato J, Gamo T
  • Journal Title: Radiochimica Acta. in-press
  • Peer Reviewed
• [Journal Article] Concentrations and activity ratios of ^<226>Ra and ^<228>Ra in surface seawater along the Pacific coast of Japan
  • Author(s): Ohta T, Mahara Y, Kubota T, Sato J, Gamo T
  • Journal Title: Radiochimica Acta. Volume: (in-press)
  • Peer Reviewed
• [Presentation] Separation of^<129>I and^<127>I in pre-nuclear-era marine algae with ultra low^<129>I/^<127>I isotopic ratios (2011)
  • Author(s): T.Ohta, Y.Mahara, T.Kubota, T.Abe, H.Matsueda, S.Sekimoto, K.Takamiya, S.Fukutani, T.Tokunaga, H.Matsuzaki
  • Organizer: AMS-12
  • Year and Date: 2011-03-24
• [Presentation] Separation of 129I and 127I in pre-nuclear-era marine algae with ultra low 129I/127I isotopic ratios (2011)
  • Author(s): T.Ohta, Y.Mahara, T.Kubota, T.Abe, H.Matsueda, S.Sekimoto, K.Takamiya S.Fukutani, T.Tokunaga, H.Matsuzaki
  • Organizer: AMS-12
  • Place of Presentation: ニュージーランド
  • Year and Date: 2011-03-24
• [Presentation] Pore-water mobility : Distribution of δ37Cl, 36Cl/Cl ratio and dissolved 4He concentration in the core drilled in the Mobara gas field, Japan (2011)
  • Author(s): Y.Mahara, T.Ohta, T.Tokunaga, H.Matsuzaki, K.Nagao, E.Nagao, Y.Miyamoto, T.Kubota
  • Organizer: AMS-12
  • Place of Presentation: ニュージーランド
  • Year and Date: 2011-03-23
• [Presentation] 地球規模環境トレーサーとしての沃素同位体比とプレートテクトニクス場の違いについての検討 (2011)
  • Author(s): 馬原保典, 太田朋子, 窪田卓見, 徳永朋祥, 松崎浩之, 長尾敬介, 中田英二, 宮本由紀, 松枝大治, 阿部剛史
  • Organizer: 京都大学原子炉実験所第43回学術講演会
  • Place of Presentation: 京大炉、大阪
  • Year and Date: 2011-01-28
• [Presentation] Pore water dating by ^<129>I : What do ^<36>Cl/Cl ratio, dissolved 4He concentration, δ^<37>Cl and ^<129>I/^<127>I ratio suggest in the Mobara Gas field, Japan? (2010)
  • Author(s): Y.Mahara, T.Ohta, T.Tokunaga
  • Organizer: AGU fall meeting 2010
  • Place of Presentation: USA
  • Year and Date: 2010-12-16
• [Presentation] 太平洋沿岸のラジウム同位体の分析 (2010)
  • Author(s): 太田朋子、窪田卓見、馬原保典
  • Organizer: 2010年質量分析学会同位体比部会
  • Year and Date: 2010-11-19
• [Presentation] コアー間隙水中のδ^<37>Cl,^<36>Cl/Clと希ガス濃度分布から見た間隙水の流動性評価 (2010)
  • Author(s): 馬原保典, 太田朋子, 徳永朋祥、長尾敬介
  • Organizer: 2010年質量分析学会同位体比部会
  • Place of Presentation: 別府
  • Year and Date: 2010-11-19
• [Presentation] 太平洋沿岸のラジウム同位体の分析 (2010)
  • Author(s): 太田朋子・窪田卓見・馬原保典
  • Organizer: 2010年質量分析学会同位体比部会
  • Place of Presentation: 別府
  • Year and Date: 2010-11-18
• [Presentation] 環境試料中のヨウ素同位体(^<129>I,^<127>I)の抽出手法の検討 (2010)
  • Author(s): 太田朋子、窪田卓見、馬原保典、松崎浩之、鈴木崇史
  • Organizer: 第2回JAEAタンデントロンAMS利用報告会
  • Place of Presentation: 青森
  • Year and Date: 2010-11-13
• [Presentation] 我が国の鹹水中の^<129>I/^<127>I比の分布と茂原地区における鹹水の滞留時間の推定 (2010)
  • Author(s): 馬原保典、太田朋子、徳永朋祥、松崎浩之、長尾敬介、窪田卓見
  • Organizer: 第2回JAEAタンデントロンAMS利用報告会
  • Place of Presentation: 青森
  • Year and Date: 2010-11-12
• [Presentation] ^<228>Ra/^<226>Ra activity ratio in groundwater around Fuji Volcano, Japan (2010)
  • Author(s): T.Ohta, Y.Mahara, K.Miyakawa, T.Kubota, K.Tagami, J.Sato
  • Organizer: Environmental Radioactivity 2010
  • Place of Presentation: イタリア
  • Year and Date: 2010-10-26
• [Presentation] 海産物中の微量元素の測定 (2010)
  • Author(s): 太田朋子、窪田卓見、福谷哲、馬原保典
  • Organizer: 日本原子力学会
  • Place of Presentation: 北海道
  • Year and Date: 2010-09-16
• [Presentation] 塩素36と溶存希ガス測定による鹹水の滞留時間推定とヨウ素同位体比について (2010)
  • Author(s): 馬原保典、太田朋子、徳永朋祥、松崎浩之、長尾敬介
  • Organizer: 環境放射能研究会
  • Place of Presentation: 筑波
  • Year and Date: 2010-03-03
• [Presentation] 遺跡の遺物の試料採取状況に対する放射性核種の汚染 (2010)
  • Author(s): 太田朋子、馬原保典、齋藤有、福谷哲、藤井俊行、中田英二、窪田卓見、安渡敦史、中野教則
  • Organizer: 環境放射能研究会
  • Place of Presentation: 筑波
  • Year and Date: 2010-03-02
• [Presentation] Observation of 228Ra/226Ra activity ratio, and concentrations of 226Ra and 228Ra of surface seawaters in the Pacific side of Japan (2009)
  • Author(s): T.Ohta, T.Kubota, Y.Mahara, J.Sato
  • Organizer: APSORC2009
  • Place of Presentation: Napa, USA
  • Year and Date: 2009-11-30
• [Presentation] 環境試料中のヨウ素同位体(129I,127I)の抽出手法の検討 (2009)
  • Author(s): 太田朋子、窪田卓見、馬原保典、松崎浩之、鈴木崇史
  • Organizer: 第2回JAEAタンデトロンAMS利用報告会
  • Place of Presentation: 青森
  • Year and Date: 2009-11-13
• [Presentation] 我が国の鹹水中の129I/127I比の分布と茂原地区における鹹水の滞留時間の推定 (2009)
  • Author(s): 馬原保典、太田朋子、徳永朋祥、松崎浩之、長尾敬介
  • Organizer: 第2回JAEAタンデトロンAMS利用報告会
  • Place of Presentation: 青森
  • Year and Date: 2009-11-12
• [Presentation] 我国の鍼水中のヨウ素同位体比分布と沃素-129の起源について (2009)
  • Author(s): 馬原保典、太田朋子、徳永朋祥、松崎浩之
  • Organizer: 日本地下水学会
  • Place of Presentation: 北海道
  • Year and Date: 2009-10-16
• [Presentation] 地下水中のKr-85の分離 (2009)
  • Author(s): 太田朋子、馬原保典、百島則幸、井上史士、井川怜欧、嶋田純、窪田卓見、谷口真人
  • Organizer: 放射化学討論会
  • Place of Presentation: 東京
  • Year and Date: 2009-09-30
• [Presentation] Measurement of radionuclides in ancient relics obtained from Matsusaki site and Hirohata shell mound on pacific site, Japan (2009)
  • Author(s): T.Ohta, T.Kubota, Y.Saito, S.Fukutani, T.Fujii, A.Ando, T.Nakano, E.Nakata, Y.Mahara
  • Organizer: 20th Radiocarbon Conference
  • Place of Presentation: Big-island, USA
  • Year and Date: 2009-06-01
• [Presentation] Presumption of origin relic from the Matsusaki site (2008)
  • Author(s): Ohta, T., Kubota, T., Ando, A., Fujii, T., Fukutani, S., Nakata, E., Nakano, T. and Mahara, Y.
  • Organizer: 6th International Conference on Isotopes (6ICI)
  • Place of Presentation: 韓国
  • Year and Date: 2008-05-15