Welcome!

Global Hydrodynamics Lab (PI: Dai Yamazaki) is a part of U-Tokyo Global Hydrology Group in Institute of Industrial Science, The University of Tokyo.

Yamazaki lab is in U-Tokyo Komaba-2 Research Campus (Map, Directions) in central Tokyo.

Our studies mainly focus on the dynamics of land waters on the global scale, using modelling, remote sensing, and data integration approach.

東京大学 グローバル水文学グループの一部である山崎研究室（全球陸域水動態研究室）のWebPageです。 （ページ下部に日本語情報があります）

If you are interested in our team, please visit the below pages:

Our research activity is summarized in:

Group photo in Hydrology Joint Workshop @ Kujukuri Beach (Aug 2023)

What is Global Hydrodynamics?

“Global Hydrodynamics” is the study of the dynamics of terrestrial waters over the entire Earth.

It focuses on the movement and storage of the surface and sub-surface waters at multiple temporal and special scales from local to global, including rivers, lakes, wetland, soil moisture, and groundwater. It also covers their interactions with related earth surface processes, such as precipitation, evaporation, coastal and ocean dynamics, biogeochemistry, climate change.

We extensively use modelling, remote sensing, and data integration approaches to cover the entire globe, while we also respect in-situ observations to determine important processes in global hydrodynamics and to ensure the robustness of the model conceptualization.

In addition to natural hydrological cycle, we also assess the impact of the terrestrial water variability to the human well-beings (e.g. flood, water resources, ecosystem service), and try to understand the reactions of the society (i.e. water resources and hazard management) and their feedback to the global hydrodynamic system.

Who are we?

Our lab is one of the world-leading hydrological science bridgeheads, consists of researchers and students with multiple backgrounds (Earth science, civil engineering, geography, spatial information science, computational science, etc.)

All research staff members belong to Institute of Industrial Science, while we also commit to education in the Department of Civil Engineering (Grad School of Engineering) and in the Graduate Program of Environmental Sciences (Grad School of Arts and Sciences).

 

Monthly Public Seminar

We host monthly public seminar series named “Hydrosphere Science Seminar”, usually from 3pm on 1st Monday of each month using Zoom.

It’s a joint seminar organized by UTokyo Hydrosphere Environment Group. Anyone interested in our activity is welcomed. Please visit the seminar webpage for more detailed info.

UTokyo Hydrosphere Science Seminar

 

CaMa-Flood modelling community

Yamazaki Lab is the primary development base for the global river model CaMa-Flood.

CaMa-Flood is the global-scale river model which has high computational efficiency and high accuracy. The model is now widely used by many users (includingsome meteolorogical agencies), and for variety of applications.

The source code of the CaMa-Flood model is published as Open Source project (under Apache 2.0 license), and we are happy for open collaborations for further developing the model to enable more advanced applications.

The model package (including minimum data to run test similations) are distributed in the product webpage, while the latest source code is managed on GitHub.

CaMa-Flood source code repositry in GitHub

If you are interested in contributing CaMa-Flood model, please visit our CaMa-Flood GitHub repository.

CaMa-Flood developer/user international meeting

We host CaMa-Flood developer/user international meeting, every two years (approxiamtely)

The first CaMa-Flood meeting was held on 5th and 6th July, 2024 (Friday and Saturday) at the Institute of Industrial Science, The University of Tokyo. Meeting webpage is here

Also, we are planning to host “Advances in Global River Modeling” session in AOGS2025 (August 2025, Singapore)

 

Rainfall-Runoff Modelling Game

We have created a rainfall-runoff modeling game that allows you to enjoyably learn hydrological process through simulation. Please visit our webpage to play the game and learn hydrological processes.

雨が降ってから河川に水が流れ出るまでの仕組みを「降雨-流出プロセス」をシミュレーションで楽しく学べる降雨-流出モデリングゲームを作りました。WebPageでゲームを公開しているので、遊んでみてください。

 

(In Japanese)

我々のテーマである“全球陸域水動態”は、地球全域で陸域の水の流れを研究します。河川・湖沼・湿地・土壌水分・地下水といった陸水の貯留と輸送の詳細を、ローカルからグローバルまで幅広いスケールで解明することが我々の目的です。陸水そのものだけでなく、関連する降水・蒸発散・沿岸海洋・地球生物科学・気候システムとの相互作用も研究対象にしています。地球全域をカバーするために研究手法は主にモデリング・リモートセンシング・データ等融合ですが、全球陸域水動態における重要なプロセスを特定し、またモデルのロバストさを担保するためにも、現地観測などに基づく詳細な水文研究も尊重しています。また、自然の水文循環に加えて、その変動が人間にあたえる影響（洪水・水資源・生態系サービス）の評価にも取り組んでおり、また水文プロセスと人間社会との相互作用も理解したいと考えています。

研究内容は、地球システム科学・土木工学・地理学・空間情報学・計算機科学など様々な分野にまたがり、研究スタッフ・在籍学生・外部の共同研究チームはとても多様なバックグラウンドをもっています。本研究室の教員と研究員は東大生研を本拠地としており、学生は工学系研究科 社会基盤学専攻 または総合文化研究科 国際環境学プログラム(GPES)に所属しています。

山崎研究室に興味がある研究者・学生の方へ

より詳しくは研究紹介ページ、 研究室メンバーリストをご覧ください。山崎研究室に加わりたい場合はHow to join our team?に説明があります。
また、研究室のハイライトをPromotionにまとめています。 具体的な研究内容と成果は、学術論文リストや学位論文リストを見てください。

洪水リスク研究に興味がある企業の方へ

産学連携で洪水リスクの理解と低減に取り組むための情報交換と議論の場として「洪水リスク研究会」を開催しております。詳しくは下記をご覧ください。

Products (code & data)

CaMa-Flood: Global hydrodynamic model
MERIT DEM: High-accuracy global DEM
MERIT Hydro: Global river topography
J-FlwDir: Japan Flow Direction Map
Runoff Game: Rainfall-Runoff Game
G3WBM/G1WBM: Global 3s/1s water map
GWD-LR: Global River Width Map
OSM Water Layer: Water layer from OpenStreetMap

Lectures

PI Yamazaki provides below classes in U-Tokyo
- 社会基盤学科 (学部:Jp)
水圏デザイン基礎 (A1 term)
水文学 (A2 term)
- Dpt.CivilEng. (Graduate:En)
Advanced Hydrology (S1 term)
Hydrosphere Science Project (S1 term)
Sediment Transport in Hydrosphere (A12 term)
Curriculum of Dpt.Civil
- GPES (Graduate:En)
Materials Systems & Dynamics II (S1 term)
Curriculum of GPES
- 教養学部 (駒場生:Jp)
UROP:学部学生のための研究入門コース
(S term & A term)

Lab News (Twitter)

Lab news using Twitter WebAPI are not displayed in some environments. Please visit our Twitter @G_Hydrodynamics if you have Twitter Account. Hope this will recover soon.