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Development of a high-resolution particle tracking system around Japan

Research Project

Project/Area Number 20K04059
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 17020:Atmospheric and hydrospheric sciences-related
Research InstitutionThe University of Tokyo

Principal Investigator

Matsumura Yoshimasa  東京大学, 大気海洋研究所, 助教 (70631399)

Co-Investigator(Kenkyū-buntansha) 黒木 聖夫  国立研究開発法人海洋研究開発機構, 付加価値情報創生部門(地球情報基盤センター), 准研究副主任 (40512843)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords粒子追跡実験 / 数値海洋モデル / 北西太平洋 / サブメソスケール / 水平渦拡散係数 / 粒子追跡 / 微細構造 / 水平拡散 / ラグランジュ解析
Outline of Research at the Start

水平分解能1km以下の高解像度数値モデルによる日本近海流動場を用いて網羅的な粒子追跡実験を実施することにより、対象を限定しない汎用的な粒子軌跡・経験環境データベースを構築する。これにより、これまで主にオイラー的な視点に依って記述されてきた海洋流動場に対して、新たにラグランジュ的視点、すなわち流体素片の軌跡・経験環境履歴の追跡から再解釈を試みる。その成果を検索可能なデータベースとして公開することにより、様々な応用研究へ貢献することを目的とする。

Outline of Final Research Achievements

A high-resolution numerical ocean model of 1/180 degree horizontal-grid spacing covering the entire sea near the Japanese archipelago was developed. Comprehensive particle-tracking experiments were carried out using the simulated high-resolution flow field to record the trajectories and exposed environments of all particles for one year integration period.
The obtained Lagrangian data of a huge number of particles enable us to qualitatively and quantitatively analyze the effects of micro-scale flow structure on the transport and diffusion of water mass and dissolved/suspended materials. For various applied research, we have also developed a postprocessing system that can immediately present and visualize the trajectory and experience history of the corresponding particles by specifying an arbitrary time and space.

Academic Significance and Societal Importance of the Research Achievements

海水中の溶存・浮遊物質の輸送・拡散過程の研究では粒子追跡実験が広く用いられているが、その精度は流動場の格子解像度に依存し、対象領域の広さとトレードオフの関係にある。
本研究では日本近海全域を対象としながら約500m格子間隔という従来にない高い解像度での海洋流動場シミュレーションを実現し、10億を超える膨大な数の粒子の軌跡・経験環境を記録することに成功した。
本研究で開発したモデリングシステム及びラグランジアン粒子データセットは、日本沿岸及び北西太平洋域での水産資源(卵や幼生・仔稚魚)や人為起源物質(プラスチック粒子や漂流ゴミ等)の輸送・拡散過程の解明に大きく貢献することが期待できる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (15 results)

All 2023 2022 2021 2020 Other

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (9 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results) Remarks (2 results)

  • [Journal Article] Dynamics of microplastic transport and accumulation in a rural coastal area: Insights from the Otsuchi Bay, a small ria in Sanriku, Japan2023

    • Author(s)
      Wang Yehao、Yamashita Rei、Matsumura Yoshimasa、Ito Shin-ichi、Komatsu Kosei
    • Journal Title

      Regional Studies in Marine Science

      Volume: 62 Pages: 102964-102964

    • DOI

      10.1016/j.rsma.2023.102964

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Deep water pathways in the North Pacific Ocean revealed by Lagrangian particle tracking2022

    • Author(s)
      Kawasaki T.、Matsumura Y.、Hasumi H.
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1

    • DOI

      10.1038/s41598-022-10080-8

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Biogeochemical impacts of flooding discharge with high suspended sediment on coastal seas: a modeling study for a microtidal open bay2021

    • Author(s)
      Hoshiba Yasuhiro、Hasumi Hiroyasu、Itoh Sachihiko、Matsumura Yoshimasa、Nakada Satoshi
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 21322-21322

    • DOI

      10.1038/s41598-021-00633-8

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of eddies on the subduction and movement of water masses reaching the 137E section using Lagrangian particles in an eddy-resolving OGCM2021

    • Author(s)
      Nakano Hideyuki、Matsumura Yoshimasa、Tsujino Hiroyuki、Urakawa Shogo、Sakamoto Kei、Toyoda Takahiro、Yamanaka Goro
    • Journal Title

      Journal of Oceanography

      Volume: 77 Issue: 2 Pages: 283-305

    • DOI

      10.1007/s10872-020-00573-3

    • NAID

      40022508896

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] A high-resolution modeling system for Lagrangian analysis around Japan2023

    • Author(s)
      Yoshimasa Matsumura, Masao Kurogi, Shota Katsura, Dai Yamazaki, Hiroyasu Hasumi
    • Organizer
      The 28th General Assembly of the International Union of Geodesy and Geophysics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 非静力学モデルとオンライン粒子追跡による分散混相流モデルの開 発とその応用2022

    • Author(s)
      松村義正・干場康博
    • Organizer
      日本海洋学会2022年度秋季大会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Development of a combined Eulerian tracer and Lagrangian particle ocean model for evaluating biogeochemical cycle and transport in regions of freshwater influence2022

    • Author(s)
      Yasuhiro Hoshiba, Yoshimasa Matsumura, Yoshihiko Ohashi, Hiroyasu Hasumi, Sachihiko Itoh
    • Organizer
      Japan Geoscience Union Meeting 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 日本近海高解像度粒子追跡2022

    • Author(s)
      松村義正・黒木聖夫
    • Organizer
      水圏生態系モデリングシンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 高解像度粒子追跡モデルを用いた大槌湾内でのアワビ幼生の輸送及び着底分布の推定2021

    • Author(s)
      松村義正 坂本天 他6名
    • Organizer
      JpGU meeting
    • Related Report
      2020 Research-status Report
  • [Presentation] Estimating vertical distribution of microplastic particles under wind-driven and Langmuir turbulence by Large Eddy Simulation2021

    • Author(s)
      Matsumura, Y., S. Ito and C. Sasak
    • Organizer
      JpGU meeting
    • Related Report
      2020 Research-status Report
  • [Presentation] 粒子追跡法と渦解像モデルを用いた,東経137度に到達する水塊に対する中規模渦の働き2020

    • Author(s)
      中野英之 松村義正 他5名
    • Organizer
      海洋学会2020年度秋季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Modeling asymmetric sediment transport caused by slope induced tidal straining2020

    • Author(s)
      Matsumura, Y. and T. Endoh
    • Organizer
      JpGU-AGU joint meeting
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Interactive effects between suspended sediment matter and physical processes induced by high riverine discharge on a microtidal open bay2020

    • Author(s)
      Hoshiba, Y., Y. Matsumura 他4名
    • Organizer
      JpGU-AGU joint meeting
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Remarks] 非静力学海洋数値モデル kinaco ソースコードリポジトリ

    • URL

      http://lmr.aori.u-tokyo.ac.jp/feog/ymatsu/kinaco.git

    • Related Report
      2022 Annual Research Report
  • [Remarks] 非静力学数値海洋モデルkinaco ソースコードリポジトリ

    • URL

      http://lmr.aori.u-tokyo.ac.jp/feog/ymatsu/kinaco.git

    • Related Report
      2021 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2024-01-30  

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