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Interactive 3D-4D Seawater Isotope & Geochemical Database

– Japan Marginal Seas & Global Ocean –

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[Explore Data] [T-S Diagrams] [Depth Profiles] [Data Sources]

Web App Introduction / Meta Description

Visualization of Ocean Isotopic and Geochemical Data: An Interactive 3D-4D Database 

URL: https://envgeo-seawater-map.streamlit.app

Overview: This interactive web application provides a comprehensive database for the spatiotemporal visualization of marine oxygen (δ18O) and hydrogen (δD) isotopes alongside salinity and other geochemical parameters. Designed for researchers in oceanography and geochemistry, the platform enables seamless exploration of both Japanese marginal seas and global ocean data.

Key Features:

  • Fully Searchable Database: Filter and access over 22,000 data points (including NASA and recent datasets).
  • Advanced Visualization: Generate interactive 3D/4D maps, depth profiles, and T-S (Temperature-Salinity) diagrams with isotope overlays.
  • Open Access: Explore regional variations and download high-quality plots for academic use and publication.

Keywords: Marine oxygen isotopes, δD and δ18O, Salinity, T-S diagram, Depth profile, Geochemical database.





【日本周辺/世界広域の海域同位体データの可視化サイト】

Visualization of Ocean Isotopic and Geochemical Data

https://envgeo-seawater-map.streamlit.app

This web application visualizes geochemical data from over 2,000 seawater samples collected around Japan. Users can interactively explore various parameters—including salinity, stable hydrogen and oxygen isotopes (δD and δ18O), time periods, and locations—through interactive 3D and 4D displays.

As of 2025, the database has been expanded to include over 22,000 global ocean isotope datasets sourced from NASA’s database.

Figures generated by this app are free to download and use. When using these materials, please cite the original articles (found in “Data Sources” and “Selected Data” results) and include the following credit:

https://envgeo.h.kyoto-u.ac.jp/sw_jpn/ by T. Ishimura (Dec. 2024).”


当ラボで同位体分析をした日本周辺の2000サンプル以上の海水データを可視化しました。

下記のリンク先から塩分・水素同位体・酸素同位体・時期・場所など好きなデータを自由に可視化し,描画した図をダウンロードできます。3D/4D表示も可能です。

You can visualise any data you like, including salinity, hydrogen isotopes, oxygen isotopes, time period and location, and download a plotted figure from the link below. 3D/4D display is also available.

https://seawater.jpn.org

https://envgeo-seawater-map.streamlit.app

メインデータは以下の論文にて公表したデータセットで

The main data set was published in the following paper

Kodama, T., Kitajima, S., Takahashi, M., and Ishimura T. (2024) Spatiotemporal variations of seawater δ18O and δD in the Western North Pacific marginal seas near Japan. Geochemical Journal. DOI: 10.2343/geochemj.GJ24009

【使用上の注意 / Notes】

  • 図は御自由にお使いいただけますが,引用は元論文とともに「https://envgeo.h.kyoto-u.ac.jp/sw_jpn/」を明記してください(2024/05/25暫定)
  • https://doi.org/10.14862/geochemproc.71.0_74  (このDOIは地球化学会での講演要旨です。こちらもどうぞ)
    • 古いバージョンのSafariでは動作しないようです。Safari16.6では動作OK。その他不具合・ご要望など,ご連絡いただければ幸いです。
    • 複数アクセスには対応できておりませんので,表示が上手く行かないときには時間をおいてからおためしください。
    • 今後,公表されている各種データを追加してデータの拡充をしたいと考えています。
  • Figures can be freely downloaded and used. Please cite the original articles and the URL “https://envgeo.h.kyoto-u.ac.jp/sw_jpn/“. (2024/05/15).
  • https://doi.org/10.14862/geochemproc.71.0_74  (This DOI is the abstract of Geochemical Society of Japan 2024. )
    • Older versions of Safari on Mac (16.3 or earlier) do not seem to display the figures. We would be grateful if you could contact us with any other problems or requests.
    • We are not able to support multiple accesses, so please try again after a while if the website does not display well.
    • In the future, we would like to expand the data by adding various published data.

【各ページの説明 / Description of each page】

随時アップデート中です。最新の状況はこちらから

【4D可視化の例 / 4D Example】

4D visualizer v104の水深・δ18O・緯度・経度の全データをプロットした例。グリグリ動かせます

全世界の可視化は

https://envgeo.h.kyoto-u.ac.jp/4d-visualization-global-seawater-data-2/ (d18Oのみ)

と 

https://envgeo.h.kyoto-u.ac.jp/4d-visualization-global-seawater-data/ (複数あるのでスマホでは重すぎて止まります)