生物殻におけるMg同位体の分別機構の解明と古海洋学の新規間接指標の開発

阐明生物壳中镁同位素的分馏机制并开发新的古海洋学间接指标

• 批准号: 10J03322
• 负责人: 吉村 寿紘
• 金额: $ 1.34万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10J03322/
• 关键词: Mg同位体; 古環境プロキシ; 生物源炭酸塩; MC-ICP-MS; マグネシウム同位体比; 国際深海掘削計画(IODP); 深海サンゴ; 堆積物コア

申請者はMg同位体比の質量分析手法の開発とその応用研究に取り組んだ.以下,(1)生物骨格,(2)堆積物,(3)高精度分析手法の開発の三つのテーマにおいて結果が得られたので報告する.申請者は炭酸カルシウムと水試料からのMg単離手法を開発し,高知コア研究所のMC-ICP-MSを用いた同位体比測定によって生物殻のMg同位体比の測定を行った.この結果,深海サンゴの骨格において水温とMg同位体比の間に明瞭な相関が認められた.生物殻は生物の成長に伴って付加成長するため生息時の時系列の環境情報を記録しており,この新しい知見は深海サンゴの骨格を用いて,地球の気候条件などを知るためにもっとも重要なパラメータである過去の水温の記録を復元できる可能性を示すものである.当該研究分野の既存研究の総説を行った成果が吉村・谷水(2012)として地球化学誌に掲載された.また,海洋におけるマグネシウムの物質循環を知る上で大型放射光施設SPring8にて地質試料のX線吸収微細構造の分析を行った.得られた成果は,Journal of Synchrotron Radiationに投稿中で,現在Minor Revisionである.また,間隙水の同位体比測定を行い,成果についてはGoldschmidt Confbrence 2012にて発表を行った.

The applicant uses the method of quantitative analysis of Mg isotope ratio to carry out the research and acquisition of the data. The following, (1) biological skeletons, (2) stacking active materials, and (3) high-precision analysis techniques for high-precision analysis. The results show that the results are satisfactory. The applicant is responsible for the determination of carbon acid, water and water materials, and the method of Mg separation is open, and the MC-ICP-MS is used to determine the Mg isotope ratio of biological materials. The results show that the temperature of the water in the deep sea is much better than that of the Mg. When biological growth is accompanied by growth and growth, a series of environmental records are recorded, and new information is known about the use of the bone structure of the deep-sea biology. the earth climate condition is aware that it is possible to improve the performance of the water temperature data. When the study divides the existing research into the results of the study of Yicun Gushui (2012), geochemistry and geochemistry. In recent years, the marine environment has been informed that large-scale radiation construction SPring8 equipment is used in the field of X-ray absorption microanalysis. I have received a lot of results, and I am in the contribution of Journal of Synchrotron Radiation, which is now available in Minor Revision. As a result of the determination of the ratio of water and crevice water, the results show that the data in the table are higher than those in Goldschmidt Confbrence 2012.

项目成果

Temperature dependence of Me isotope fractionation in deep-sea coral : paleocean ographic_implications as a new proxy

深海珊瑚中 Me 同位素分馏的温度依赖性：古海洋图形影响作为新的代理

• 发表时间: 2011
• 作者: Yoshimura;T.;Tanimizu;M.;Inoue;M.;Suzuki;A.;Iwasaki;N.;Kawahata;H.
• 通讯作者: H.

Biological and water chemistry controls on Sr/Ca, Ba/Ca, Mg/Ca and δ18^<Op>rofiles in freshwater pearl mussel Hyriopsis sp

淡水珍珠贻贝 Hyriopsis sp 中 Sr/Ca、Ba/Ca、Mg/Ca 和 δ18^<Op>谱的生物和水化学控制

• DOI: 10.1016/j.palaeo.2011.06.014
• 发表时间: 2011
• 期刊: Palaeogeography, Palaeoclimatology, Palaeoecology
• 作者: Izumida;H.;Yoshimura;T.;Suzuki;A.;Nakashima;R.;Ishimura;T.;Yasuhara;M.;Inamura;A.;Shikazono;N.;Kawahata;H
• 通讯作者: H

Small metabolic carbon contribution to shell carbonates of cultured freshwater pearl mussel Hyriopsis sp.

养殖淡水珍珠贝的贝壳碳酸盐的代谢碳贡献很小。

• 发表时间: 2010
• 作者: Yoshimura;T.;Izumida;H.;Suzuki;A.;Ishimura;T.;Nakashima;R.;Kawahata;H
• 通讯作者: H

Volume 317 Expedition Reports : Canterbury Basin Sea Level

第 317 卷探险报告：坎特伯雷盆地海平面

• DOI: 10.2204/iodp.proc.317.101.2011
• 发表时间: 2011
• 期刊: Proceedings of the Integrated Ocean Drilling Program
• 作者: Fulthorpe;C.S.;Hoyanagi;K.;Blum;P.;the Expedition 317 Scientists (including Yoshimura T.)
• 通讯作者: the Expedition 317 Scientists (including Yoshimura T.)

Evaluation of Porites coral δ^<26>Mg as a new low-latitude climate proxy : insight from culture experiments in temperature controlled tank

滨珊瑚 δ^<26>Mg 作为新的低纬度气候指标的评估：来自温控池培养实验的见解

• 发表时间: 2011
• 作者: Yoshimura;T.;Kawahata;H.;Suzuki;A.;Inoue;M.;Tanimizu;M.;Koga;K.;Sakai;K.
• 通讯作者: K.