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Coast and Coastal Environment Lab
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The lab studies ocean waves and currents to protect coasts from disasters and erosion.
AboutAbout the lab
Toward a higher-quality coastal and nearshore environment
The Coast and Coastal Environment Lab studies issues related to coastal disaster prevention, coastal use, and the habitats of living organisms.
Coasts, located at the boundary between land and sea, face problems such as tsunamis, storm surges, and coastal erosion.
The lab first seeks to understand how waves and currents work, and from there tackles problems of sediment transport and the forces acting on structures.
Combining field observations, experiments, and numerical simulation, the lab has each member take charge of an independent research topic.
Key terms
- Littoral drift
- The movement of beach sand carried by waves and currents. It is the source of changes in the shape of a beach.
- Storm surge
- A phenomenon in which sea level rises far above normal due to strong winds and low atmospheric pressure from typhoons and similar storms.
- Numerical simulation
- A method of expressing a phenomenon with mathematical equations and using a computer to reproduce or predict it.
NewsLab news
Master's student receives the Coastal Engineering Paper Encouragement Award
Master's student receives the COPRI Award at ICCE 2024
Applications open for the FY2025 information session and lab visits for prospective graduate students
Student receives the Excellent Student Paper Award
ResearchResearch themes
To create better coastal and nearshore environments, the lab aims to understand and control both each individual phenomenon that occurs on coasts and the overall system behind them. Combining field observations, experiments, and numerical simulation, it studies the themes of waves and currents, sand movement, structures, and tsunamis and storm surges.
*Illustrative imageHow Waves and Currents Work on Coasts
The lab investigates how waves and currents behave on coasts. It also analyzes how swell propagates across the ocean and how waves change over the long term.
*Illustrative imageRoles of Structures and Their Environmental Impact
The lab examines the performance of coastal structures such as seawalls and levees, and their effects on the surrounding environment. It also analyzes waves overtopping seawalls and the flow of water.
*Illustrative imageSand Movement and Coastal Erosion Countermeasures
The lab clarifies how waves and currents move sand (littoral drift) in order to inform coastal erosion countermeasures. It also observes the loss of sand placed on beaches and reproduces long-term shoreline changes through simulation.
*Illustrative imageTsunami and Storm Surge Disaster Countermeasures
The lab studies countermeasures against disasters caused by tsunamis and storm surges. Its work includes analysis of how the tsunami from the Noto Peninsula Earthquake traveled up rivers, and research on typhoon-induced storm surges.
MembersFaculty
The members of the Coast and Coastal Environment Lab consist of faculty, researchers and visiting researchers, secretaries, and doctoral, master's, and undergraduate students.
- ProfessorTajima YoshimitsuPublications ↗
- ProfessorTakenori ShimozonoPublications ↗
- Program-Specific Visiting ProfessorFuminori Kato
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Utoma, Samani, Hokkaido 01” motoGP from Japan. / CC BY 2.1 jp (cropped)
- How Waves and Currents Work on Coasts: “Text-book rip currents at Monkstone Beach - geograph.org.uk - 2608748” Alistair Hare / CC BY-SA 2.0 (cropped)
- Roles of Structures and Their Environmental Impact: “Coast and tetrapods from breakwater of Chatan Sunset Beach”
そらみみ / CC BY-SA 4.0 (cropped) - Sand Movement and Coastal Erosion Countermeasures: “Norderney, Strandaufspülung” Dietmar Rabich / CC BY-SA 4.0 (cropped)
- Tsunami and Storm Surge Disaster Countermeasures: “High Seawalls in Tarō, Iwate -2” Kihkyef / CC BY-SA 3.0 (cropped)
- Related lab (Sasaki Lab): “Tokyo L7 lrg” Image courtesy Ron Beck, USGS Eros Data Center Satellite Systems Branch / Public domain (cropped)
- Related lab (Oki Lab): “Global Total Precipitable Water Vapor for May )” Atmospheric Infrared Sounder / Public domain (cropped)
- Related lab (Meguro-Ohara-Numada Lab): “Cypress structure” H.G. Wilshire, U.S. Geological Survey / Public domain (cropped)
- Related lab (River and Watershed Environment Lab, Kawasaki Group): “Defense.gov photo essay 111016-M-ZN194-151” Cpl. Robert J. Maurer / Public domain (cropped)
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