• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Marine environments recorded in siliceous microfossil skeletons: species-level analysis of isotopic ratios and minor trace elements

Research Project

Project/Area Number 18H01329
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 17050:Biogeosciences-related
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

Takuya Itaki  国立研究開発法人産業技術総合研究所, 地質調査総合センター, 研究グループ長 (30509724)

Co-Investigator(Kenkyū-buntansha) 堀川 恵司  富山大学, 学術研究部理学系, 准教授 (40467858)
井尻 暁  国立研究開発法人海洋研究開発機構, 超先鋭研究開発部門(高知コア研究所), 主任研究員 (70374212)
岡崎 裕典  九州大学, 理学研究院, 准教授 (80426288)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2020: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2019: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2018: ¥12,350,000 (Direct Cost: ¥9,500,000、Indirect Cost: ¥2,850,000)
Keywords古海洋 / 指標 / 珪質微化石 / 放散虫 / 同位体比 / 人工知能 / ディープラーニング / 微化石 / 古海洋学 / マイクロマニピュレーター / 微量分析 / マイクロマニピュレーション / 微小粒子
Outline of Final Research Achievements

Oxygen isotope ratio and trace elements recorded in siliceous microfossil skeletons such as diatoms and radiolarians are expected to be powerful tools for paleoenvironmental studies using sediments from areas or periods where carbonates are not preserved, however what kind of environmental information these values actually indicate is not fully understood. In this study, we developed a system that links the latest technology of automatic sorting and accumulation of fine particles with the automatic classification of microfossils using artificial intelligence, and established a method to accumulate a large amount of siliceous microfossils of a single species. This has paved the way for the analysis of small siliceous microfossils as a single species, which has been difficult in the past.

Academic Significance and Societal Importance of the Research Achievements

手動では困難な小型の珪質微化石(放散虫)を自動で分類し大量に集積するシステムが構築されたことで、これまで実例のない、単種の放散虫の骨格に記録された同位体比・微量元素などの分析に道筋をつけた。これによって、古海洋研究に新たな指標の開発が可能となり、今後、多種多様な微化石に応用されることで、新規研究分野の創出にも繋がることが期待される。

Report

(5 results)
  • 2021 Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Products Report
  • Research Products

    (15 results)

All 2024 2021 2020 2019 2018 Other

All Journal Article (6 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 6 results,  Open Access: 4 results) Presentation (4 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results) Remarks (2 results) Patent(Industrial Property Rights) (3 results) (of which Overseas: 2 results)

  • [Journal Article] Automated collection of single species of microfossils using a deep learning?micromanipulator system2020

    • Author(s)
      Itaki Takuya、Taira Yosuke、Kuwamori Naoki、Maebayashi Toshinori、Takeshima Satoshi、Toya Kenji
    • Journal Title

      Progress in Earth and Planetary Science

      Volume: 7 Issue: 1 Pages: 19-19

    • DOI

      10.1186/s40645-020-00332-4

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Innovative microfossil (radiolarian) analysis using a system for automated image collection and AI-based classification of species2020

    • Author(s)
      Itaki Takuya、Taira Yosuke、Kuwamori Naoki、Saito Hitoshi、Ikehara Minoru、Hoshino Tatsuhiko
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 21136-21136

    • DOI

      10.1038/s41598-020-77812-6

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Polycystine radiolarians vertical distribution in the subtropical Northwest Pacific during Spring 2015 (KS15-4)2020

    • Author(s)
      Matsuzaki, K., Itaki, T., Sugisaki, S.
    • Journal Title

      PALEONTOLOGICAL RESEARCH

      Volume: 24 Issue: 2 Pages: 113-133

    • DOI

      10.2517/2019pr019

    • NAID

      210000158223

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Integrated Neogene biochemostratigraphy at DSDP Site 296 on the Kyushu-Palau Ridge in the western North Pacific2020

    • Author(s)
      Matsui Hiroki、Horikawa Keiji、Chiyonobu Shun、Itaki Takuya、Ikehara Minoru、Kawagata Shungo、Wakaki-Uchimura Hitomi、Asahara Yoshihiro、Seki Osamu、Okazaki Yusuke
    • Journal Title

      Newsletters on Stratigraphy

      Volume: 53 Issue: 3 Pages: 313-331

    • DOI

      10.1127/nos/2019/0549

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Paleoceanographic changes in the Northern East China Sea during the last 400 kyr as inferred from radiolarian assemblages (IODP Site U1429)2019

    • Author(s)
      Matsuzaki Kenji M.、Itaki Takuya、Tada Ryuji
    • Journal Title

      Progress in Earth and Planetary Science

      Volume: 6 Issue: 1 Pages: 1-21

    • DOI

      10.1186/s40645-019-0256-3

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] aleoceanographic history of the Japan Sea over the last 9.5 million years inferred from radiolarian assemblages (IODP Expedition 346 Sites U1425 and U1430)2018

    • Author(s)
      Matsuzaki, K. M., Itaki, T., Tada, R., Kamikuri, S.
    • Journal Title

      Progress in Earth and Planetary Science

      Volume: 5 Issue: 1 Pages: 1-33

    • DOI

      10.1186/s40645-018-0204-7

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] A new tool for micropaleontology using AI (artificial intelligence): automation of identification and collection for microfossil species2019

    • Author(s)
      Itaki. T.
    • Organizer
      J-DESCワークショップ「Scientific Ocean Drilling beyond 2023/科学掘削の未来:2023年からその先へ」
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 微化石分析の新たなツール:人工知能と連携した顕微鏡画像の自動取得システム2018

    • Author(s)
      板木 拓也, 河地正伸, 平 陽介, 鍬守直樹, 斎藤 仁志, 星野辰彦
    • Organizer
      日本地球惑星科学連合大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 人工知能を用いた放散虫群集の自動データ取得へ向けた試み2018

    • Author(s)
      板木 拓也, 平 陽介, 鍬守直樹, 斎藤 仁志, 星野辰彦
    • Organizer
      日本古生物学会2018年年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] A new tool for microfossil analysis in the Southern Ocean -automatic image collector equipped with deep learning-2018

    • Author(s)
      Itaki Takuya, Taira Yosuke, Kuwamori Naoki, Saito Hitoshi, Hoshino Tatsuhiko and Ikehara Minoru
    • Organizer
      American Geophysical Union 2018 fall meeting
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 産総研プレスリリース(2018/12/8)

    • URL

      https://www.aist.go.jp/aist_j/press_release/pr2018/pr20181203/pr20181203.html

    • Related Report
      2018 Annual Research Report
  • [Remarks] さがせ、おもしろ研究!ブルーバックス探検隊が行く(2019/1/4)

    • URL

      https://www.aist.go.jp/aist_j/aistinfo/bluebacks/no19/

    • Related Report
      2018 Annual Research Report
  • [Patent(Industrial Property Rights)] 分類装置、分類方法および記録媒体2024

    • Inventor(s)
      鍬守 直樹、平 陽介、板木 拓也、前林 利典、竹島 哲、戸谷 健二
    • Industrial Property Rights Holder
      国立研究開発法人産業技術総合研究所、日本電気 株式会社
    • Industrial Property Rights Type
      特許
    • Acquisition Date
      2024
    • Related Report
      Products Report
    • Overseas
  • [Patent(Industrial Property Rights)] 分類装置、分類方法および記録媒体2021

    • Inventor(s)
      鍬守 直樹、平 陽介、板木 拓也、前林 利典、竹島 哲、戸谷 健二
    • Industrial Property Rights Holder
      国立研究開発法人産業技術総合研究所、日本電気 株式会社
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Related Report
      Products Report
    • Overseas
  • [Patent(Industrial Property Rights)] 分類装置、分類方法およびプログラム2018

    • Inventor(s)
      板木拓也ほか
    • Industrial Property Rights Holder
      産業技術総合研究所
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2018-163981
    • Filing Date
      2018
    • Related Report
      2018 Annual Research Report

URL: 

Published: 2018-04-23   Modified: 2025-03-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi