Development of analytical technique for environmental change using isotopes of organometals

2013 Fiscal Year Final Research Report

• Project/Area Number: 23510005
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: Nagoya University
• Principal Investigator: ASAHARA Yoshihiro 名古屋大学, 環境学研究科, 助教 (10281065)
• Co-Investigator(Kenkyū-buntansha): TANIMIZU Masaharu 海洋研究開発機構, 高知コア研究所 (20373459)
• Co-Investigator(Renkei-kenkyūsha): MINAMI Masayo 名古屋大学, 年代測定総合研究センター (90324392)
• Project Period (FY): 2011 – 2013
• Keywords: 同位体 / 海洋科学 / 環境変動 / 地球化学

Research Abstract

Primary productivity is very high in the western subarctic Pacific (WSP), most likely because of terrigenous input including nutrients and iron. To reveal the origin and transport processes of the iron, stable isotopes of iron were used in this study. Results of the isotope ratios are summarized as follows: Most of dissolved iron from the Amur River chemically precipitates and deposits in the estuary, the deposited particulate iron is resuspended and flows out to the Okhotsk Sea intermediate water, and it is transported southward along the east coast of Sakhalin Island and partly flows out into the WSP.

Research Products

• [Journal Article] Diatoms spread a high eNd-signature in the North Pacific Ocean (2014)
  • Author(s): Akagi, T., Yasuda, S., Asahara, Y., Emoto, M., Takahashi, K.
  • Journal Title: Geochemical Journal Volume: 48 Pages: 121-131
  • DOI: 10.2343/geochemj.2.0292
  • Peer Reviewed
• [Journal Article] Distribution and transport processes of lithogenic material from the Amur River revealed by the Sr and Nd isotope ratios of sediments from the Sea of Okhotsk (2014)
  • Author(s): Yasuda, T., Asahara, Y., Ichikawa, R., Nakatsuka, M., Minami, H., Nagao, S.
  • Journal Title: Progress in Oceanography Volume: (in press)
  • DOI: 10.1016/j.pocean.2014.04.015
  • Peer Reviewed
• [Journal Article] Geochemical significance of the Rb-Sr, La-Ce and Sm-Nd isotope systems in A-type rocks with REE tetrad patterns and negative Eu and Ce anomalies: the Cretaceous Muamsa and Weolaksan granites, South Korea (2013)
  • Author(s): Lee, S.G., Asahara, Y., Tanaka, T., Lee, S.R., Lee, T.J.
  • Journal Title: Chemie der Erde Volume: 73 Pages: 75-88
  • DOI: 10.1016/j.chemer.2012.11.008
  • Peer Reviewed
• [Journal Article] Early Aptian paleoenvironmental evolution of the Bab Basin at the southern Neo-Tethys margin : Response to global carbon-cycle perturbations across Ocean Anoxic Event 1a (2013)
  • Author(s): Yamamoto, K., Ishibashi, M., Takayanagi, H., Asahara, Y., Sato, T., Nishi, H., Iryu, Y.
  • Journal Title: Geochemistry, Geophysics, Geosystems Volume: 14 Pages: 1104-1130
  • DOI: 10.1002/ggge.20083
  • Peer Reviewed
• [Journal Article] 北海道利尻島の泥炭地に飛来する鉛の供給源の変遷 (2012)
  • Author(s): 河野麻希子, 谷水雅治, 淺原良浩, 南雅代, 細野高啓, 中村俊夫
  • Journal Title: 名古屋大学加速器質量分析計業績報告書 Volume: XXIII Pages: 138-148
  • URL: http://www.nendai.nagoya-u.ac.jp/ja/tande_report/2011/kono2011.pdf
• [Journal Article] Contribution of detrital materials from the Yukon River to the continental shelf sediments of the Bering Sea based on the ESR intensity and crystallinity of quartz (2012)
  • Author(s): Nagashima, K., Asahara, Y., Takeuchi, F., Harada, N., Toyoda, S., Tada, R.
  • Journal Title: Deep Sea Research Volume: II 61-64 Pages: 155-171
  • DOI: 10.1016/j.dsr2.2011.12.001
  • Peer Reviewed
• [Journal Article] Provenance of terrigenous detritus of the surface sediments in the Bering and Chukchi Seas as derived from Sr and Nd isotopes : implications for recent climate change in the Arctic regions (2012)
  • Author(s): Asahara, Y., Takeuchi, F., Nagashima, K., Harada, N., Yamamoto, K., Oguri, K., Tadai, O.
  • Journal Title: Deep Sea Research Volume: II 61-64 Pages: 145-154
  • DOI: 10.1016/j.dsr2.2011.12.004
  • Peer Reviewed
• [Journal Article] Another sea area separated from the Panthalassic Ocean in the Norian, the Late Triassic : the lowest Sr isotopic composition of the Ishimaki limestone in central Japan (2012)
  • Author(s): Suzuki, K., Asahara, Y., Mimura, K., Tanaka, T.
  • Journal Title: Chemie der Erde Volume: 72 Pages: 77-74
  • DOI: 10.1016/j.chemer.2011.06.004
  • Peer Reviewed
• [Journal Article] Petrochemical and Sr-Nd isotope investigations of A-type granites in the east of Misho, NW Iran (2012)
  • Author(s): Ahankoub, M., Jahangiri, A., Asahara, Y., Moayyed, M.
  • Journal Title: Arabian Journal of Geosciences
  • DOI: 10.1007/s12517-012-0680-9
  • Peer Reviewed
• [Journal Article] Limits on conservative behaviour of Nd isotopes in seawater assessed from analysis of fish teeth from Pacific core tops (2011)
  • Author(s): Horikawa, K., Martin, E.E., Asahara, Y., Sagawa, T.
  • Journal Title: Earth and Planetary Science Letters Volume: 310 Pages: 119-130
  • DOI: 10.1016/j.epsl.2011.07.018
  • Peer Reviewed
• [Journal Article] Discrimination of the age and tectonic setting for magmatic rocks along the Zagros thrust zone, northwest Iran, using the zircon U-Pb age and Sr-Nd isotopes (2011)
  • Author(s): Azizi, H., Tanaka, T., Asahara, Y., Chung, S.L., Zarrinkoub, M.H.
  • Journal Title: Journal of Geodynamics Volume: 52 Pages: 304-320
  • DOI: 10.1016/j.jog.2011.03.001
  • Peer Reviewed
• [Journal Article] Geochronological and geochemical constraints on the petrogenesis of high-K granite from the Suffi abad area, Sanandaj-Sirjan Zone, NW Iran (2011)
  • Author(s): Azizi, H., Asahara, Y., Mehrabi, B., Chung, S.L.
  • Journal Title: Chemie der Erde Volume: 71 Pages: 363-376
  • DOI: 10.1016/j.chemer.2011.06.005
  • Peer Reviewed
• [Presentation] Long-distance transport of particulate iron from the Amur River to the western subarctic Pacific reinforced by the combination of Fe and Nd isotopes (2013)
  • Author(s): Yasuda, T., Asahara, Y., Ichikawa, R., Nakatsuka, T., Nishioka, J., Minami, H., Nagao, S., Tanimizu, M., Shin, K., Kono, M.
  • Organizer: AGU Fall Meeting
  • Place of Presentation: Moscone Center, USA・サンフランシスコ
  • Year and Date: 20131200
• [Presentation] 鉄を通して繋がるアムール川～オホーツク海～西部北太平洋亜寒帯域(WSP):Fe・Nd 同位体を用いた検証 (2013)
  • Author(s): 安田友紀, 淺原良浩, 市川諒, 中塚武, 西岡純, 南秀樹, 長尾誠也, 谷水雅治, 申基澈, 河野麻希子
  • Organizer: 第3回同位体環境学シンポジウム
  • Place of Presentation: 総合地球環境学研究所, 京都
  • Year and Date: 20131200
• [Presentation] オホーツク海北西陸棚域から運び出されるアムール川起源の粒子態鉄～Fe・Nd 同位体による輸送過程の検証 (2013)
  • Author(s): 安田友紀, 淺原良浩, 市川諒, 中塚武, 西岡純, 南秀樹, 長尾誠也, 谷水雅治, 申基澈, 河野麻希子
  • Organizer: 日本地球化学会第60回年会
  • Place of Presentation: 筑波大学, つくば
  • Year and Date: 20130900
• [Presentation] 実構造物中のコンクリートの中性化進行評価- ^<14>C, δ^<13>C, δ^<18>O, EPMA 分析から何が言えるか - (2013)
  • Author(s): 南雅代, 浅原良浩, 丸山一平, 吉田英一
  • Organizer: 第25回(2012年度)名古屋大学年代測定総合研究センターシンポジウム
  • Place of Presentation: 名古屋大学, 名古屋
  • Year and Date: 20130100
• [Presentation] ザグロス造山帯の火成作用と大陸地殻進化論 (2012)
  • Author(s): 浅原良浩
  • Organizer: シンポジウム「西アジアの地質とテクトニクス」
  • Place of Presentation: 筑波大学, つくば)
  • Year and Date: 20121200
• [Presentation] 鉄・ネオジム同位体から探るオホーツク海における鉄の供給源と輸送過程 (2012)
  • Author(s): 安田友紀, 市川諒, 浅原良浩, 中塚武, 南秀樹, 長尾誠也, 西岡純, 谷水雅治, 申基澈, 河野麻希子
  • Organizer: 日本地球化学会第59回年会
  • Place of Presentation: 九州大学, 福岡
  • Year and Date: 20120900
• [Presentation] 北海道利尻島泥炭コアの^<14>C 年代と^<210>Pb 年代の差異 (2012)
  • Author(s): 河野麻希子, 南雅代, 谷水雅治, 浅原良浩, 細野高啓, 中村俊夫
  • Organizer: 日本地球化学会第59回年会
  • Place of Presentation: 九州大学, 福岡
  • Year and Date: 20120900
• [Presentation] ザグロス山脈Sanandaj-Sirjan Zone 北部のフェルシック深成岩のRb-Sr、Sm-Nd 同位体分析 (2012)
  • Author(s): 清水美早, 浅原良浩, 壷井基裕, Azizi, H.
  • Organizer: 日本地球化学会第59回年会
  • Place of Presentation: 九州大学, 福岡
  • Year and Date: 20120900
• [Presentation] アラブ首長国連邦アブダビ沖の前期アプチアン炭酸塩岩コア試料に記録された海洋無酸素事変 (OAE1a)時におけるグローバル炭素循環と古海洋環境変遷 (2012)
  • Author(s): 山本和幸, 石橋正敏, 高柳栄子, 浅原良浩, 佐藤時幸, 西弘嗣, 井龍康文
  • Organizer: 日本地質学会第119年学術大会
  • Place of Presentation: 大阪府立大学, 堺
  • Year and Date: 20120900
• [Presentation] Old apparent ^<14>C ages of a peat core from Rishiri Island, northern Japan (2012)
  • Author(s): Kono, M., Minami, M., Tanimizu, M., Asahara, Y., Hosono, T., Nakamura, T.
  • Organizer: 21st International Radiocarbon Conference
  • Place of Presentation: Unesco HQ, フランス・パリ
  • Year and Date: 20120700
• [Presentation] 北海道泥炭コア試料中に記録された人為起源放出鉛の時系列供給源解析 (2012)
  • Author(s): 河野麻希子, 谷水雅治, 淺原良浩, 南雅代, 中村俊夫, 細野高啓
  • Organizer: 第21回環境化学討論会
  • Place of Presentation: 愛媛大学, 松山
  • Year and Date: 20120700
• [Presentation] 石英のESR・結晶化度分析に基づく、ユーコン川からベーリング海陸棚域へと運ばれる陸源砕屑物の評価 (2012)
  • Author(s): 長島佳菜, 浅原良浩, 豊田新, 和田知之, 知北和久, 原田尚美
  • Organizer: 日本地球惑星科学連合2012年大会
  • Place of Presentation: 幕張メッセ国際会議場
  • Year and Date: 20120500
• [Presentation] 北海道利尻島に大気輸送された鉛の起源の変遷 (2012)
  • Author(s): 河野麻希子, 谷水雅治, 淺原良浩, 南雅代, 細野高啓, 中村俊夫
  • Organizer: 平成23年度高知大学海洋コア総合研究センター共同利用・共同研究成果発表会
  • Place of Presentation: 高知大学海洋コア総合研究センター, 南国
  • Year and Date: 20120300
• [Presentation] 北海道利尻島泥炭湿地に飛来する鉛の供給源の変遷 (2012)
  • Author(s): 河野麻希子, 谷水雅治, 淺原良浩, 南雅代, 細野高啓, 中村俊夫
  • Organizer: 第24回(2011年度)名古屋大学年代測定総合研究センターシンポジウム
  • Place of Presentation: 名古屋大学, 名古屋
  • Year and Date: 20120100
• [Presentation] 過去5000年間に北海道利尻島に飛来した鉛の供給源解析 (2011)
  • Author(s): 河野麻希子, 淺原良浩, 谷水雅治, 南雅代, 中村俊夫, 細野高啓
  • Organizer: 日本地球化学会第58回年会
  • Place of Presentation: 北海道大学, 札幌
  • Year and Date: 20110900
• [Presentation] オホーツク海陸棚堆積物の鉄の同位体分析 (2011)
  • Author(s): 淺原良浩, 市川諒, 谷水雅治, 河野麻希子, 申基澈, 南秀樹, 中塚武
  • Organizer: 第1回同位体環境学シンポジウム
  • Place of Presentation: 総合地球環境学研究所, 京都
  • Year and Date: 20110900
• [Book] 地球環境学マニュアル2 -はかる・みせる・読みとく- (総合地球環境学研究所編) (3章7節, 分担執筆) (2014)
  • Total Pages: 50-51
  • Publisher: 朝倉書店
• [Remarks]
  • URL: http://profs.provost.nagoya-u.ac.jp/view/html/100000941_ja.html