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Takagi Lab
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A coastal disaster prevention lab that protects Asian coasts from tsunamis and storm surges.
AboutAbout the lab
Coastal disaster prevention technology that harnesses the power of nature.
Takagi Lab studies technologies to reduce disasters in coastal areas, such as tsunamis and storm surges.
Using an engineering, problem-solving approach, the lab explores ways to protect people's lives and the foundations of their livelihoods.
It studies coastal embankments that make use of plants such as mangroves, and seawalls that generate power from differences in tide level.
The lab aims to create disaster prevention technologies that are useful in Asian countries that lack sufficient funding and resources.
Key terms
- Storm surge
- A phenomenon in which the sea level rises abnormally during a typhoon or low-pressure system and seawater floods onto land
- Mangrove
- A forest of trees growing on tropical and subtropical coasts. Research is advancing on using them in coastal embankments
- Coastal disaster prevention
- Efforts to protect people and their livelihoods from seaside disasters such as tsunamis, storm surges, and coastal erosion
NewsLab news
Paper published on tsunami-resilient coastal reconstruction after the Great East Japan Earthquake
Paper published on nature-based coastal protection in the Chao Phraya Delta
Paper published on early warning and adaptation measures for storm surges in Macau
Paper published on the impact of Cyclone Mocha on vegetation and flooding
Paper published on mangrove forest recovery ten years after Typhoon Haiyan
ResearchResearch themes
Targeting coastal disasters such as tsunamis, storm surges, and coastal erosion, the lab approaches coastal disaster prevention with an engineering, problem-solving approach. It conducts research to strengthen disaster prevention foundations in Japan and other Asian countries, especially those that lack sufficient funding, resources, and information.
*Illustrative imageProtecting Coasts with Mangroves
Mangrove forests protect coasts from storm surges and waves. The lab investigates how forests lost to typhoons have recovered, and designs portable reefs that protect newly planted saplings from waves, advancing disaster prevention that makes use of the power of nature.
*Illustrative imageProtecting Ports from Tsunamis with Movable Gates
The lab studies a way to protect ports with gates that normally rest on the seabed and rise only when a tsunami strikes. It is considering shapes that can be installed even on ground prone to liquefaction, mechanisms driven by slight tidal forces, and design methods.
*Illustrative imageFlooding in Asian Coastal Cities
In Asian coastal cities such as Jakarta, where land subsidence is progressing, flooding caused by storm surges and high waves is severe. The lab predicts damage with fast-solving inundation models, and also investigates storm surge warnings in Macau and the amplification of the tsunami from the Noto Peninsula Earthquake.
MembersFaculty
The members of Takagi Lab consist of faculty, students, and visiting researchers.As of 2026
- ProfessorHiroshi Takagi
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: “Mangrove Forests in the Philippines” FroyR / CC BY-SA 4.0 (cropped)
- Protecting Coasts with Mangroves: “Mangrove Forest in Metro Manila, Philippines” FroyR / CC BY-SA 4.0 (cropped)
- Protecting Ports from Tsunamis with Movable Gates: “IHNC Surge Barrier test operation” Team New Orleans, US Army Corps of Engineers / Public domain (cropped)
- Flooding in Asian Coastal Cities: “Jakarta East Flood Canal, Cipinang Muara Section, June 2024” Irvan Ary Maulana / CC BY-SA 4.0 (cropped)
- Related lab (Abe Lab): “Rooftop Solar panels on homes in Mehsana, Gujarat, India” Nizil Shah / CC BY-SA 4.0 (cropped)
- Related lab (Takada Lab): “Radio Signal Reflection & Refraction on a Simple Ionosphere Model (SVS5240 - polar propagation basic sample 1920x1080)” NASA's Scientific Visualization Studio - null / Public domain (cropped)
- Related lab (Varquez Lab): “Atlanta thermal” NASA / Public domain (cropped)
- Related lab (Nakamura Lab): “Coral Outcrop Flynn Reef” Toby Hudson / CC BY-SA 3.0 (cropped)
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