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[International Research Institute of Disaster Science] International Disaster Mitigation Strategy Lab
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An urban disaster risk reduction lab that develops strategies for disaster prevention and recovery in disaster-affected areas around the world.

AboutAbout the lab
Disaster risk reduction and recovery strategies for cities around the world
The International Disaster Mitigation Strategy Lab studies how to develop international strategies for urban disaster risk reduction and recovery.
Taking into account the natural, economic, and social conditions of each country and region, the lab identifies issues both before and after disasters.
Using building damage data, the lab develops methods for assessing urban vulnerability and applies them to real cities.
The lab also investigates the recovery process in disaster-affected areas such as Taiwan, Sri Lanka, the Philippines, and the areas hit by the Great East Japan Earthquake.
Key terms
- vulnerability assessment
- An assessment that estimates how susceptible a city or its buildings are to damage from earthquakes and other hazards
- building damage function
- A formula showing the relationship between the intensity of earthquake shaking and the proportion of buildings that are damaged
- building recovery curve
- A graph that shows the progress of building reconstruction over time and is used to evaluate the recovery process
NewsLab news
A master's student received the Excellent Presentation Award at the Summer School 2026 of the Institute of Social Safety Science
A master's student received the Excellent Presentation Award at the Spring Research Presentation Meeting of the Institute of Social Safety Science
A master's student received the Aoba Prize (master's thesis) from the Department of Architecture and Building Science
A doctoral student received the Encouragement Paper Award of the Reconstruction Design Research Award at the Reconstruction Design Council
A master's student received the ACUDR Presentation Award at the Asian Conference on Urban Disaster Reduction
ResearchResearch themes
Aiming to develop international strategies for urban disaster risk reduction and recovery, the lab analyzes the characteristics of each country and region from an interdisciplinary perspective. It identifies current problems and challenges in both risk management before disasters occur and recovery and regeneration after they occur.
*Illustrative imageDisaster risk reduction and recovery strategies suited to each country
The lab studies what risk management, disaster risk reduction, and recovery strategies suit the natural, economic, and social conditions of each country and region. It also considers how to build frameworks for international cooperation.
*Illustrative imageAssessing urban vulnerability
Using building damage data from the 1995 Hyogo-ken Nanbu Earthquake, the lab developed a building damage function that shows the relationship between the intensity of ground shaking and the building damage rate. Using this function, it has proposed a method for assessing the risk of building collapse in a region and applies it to real cities.
*Illustrative imageUrban recovery after disasters
The lab has investigated the process of damage and recovery in areas affected by the Chi-Chi Earthquake in Taiwan, the Indian Ocean tsunami, the Peru earthquake, and the Great East Japan Earthquake, among others. It has also proposed a building recovery curve, which expresses the progress of recovery quantitatively.
*Illustrative imageUrban and architectural spaces designed for disasters
The lab collects examples of spaces that respond to each stage, from advance preparation to limit damage, through emergency response, to restoration and recovery. It aims to organize these examples into a systematic theory.
MembersFaculty
The members of the International Disaster Mitigation Strategy Lab are faculty, administrative secretaries, doctoral, master's, and undergraduate students, and research students.As of 2026
- ProfessorOsamu Murao
- ProfessorTakako Izumi
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: “Tacloban Typhoon Haiyan” Trocaire from Ireland / CC BY 2.0 (cropped)
- Disaster risk reduction and recovery strategies suited to each country: “Cyclone Shelter Project ( )” Helena Wright / CC BY 2.0 (cropped)
- Assessing urban vulnerability: “Izmit eart2” USGS / Public domain (cropped)
- Urban recovery after disasters: “Rikuzentakata, belt conveyors for the earthquake reconstruction.B” Sakaori (talk) / CC BY 3.0 (cropped)
- Urban and architectural spaces designed for disasters: “Sign of Route for Tsunami Evacuation Building in Japan” Halowand / CC BY-SA 4.0 (cropped)
- Related lab (Regional Planning and Spatial Design Strategy Lab): “Architecture Site Masterplan Miniature Scale Model” iKix 3D Prints / CC BY-SA 4.0 (cropped)
- Related lab ([International Research Institute of Disaster Science] Earthquake Engineering Lab): “Sendai Six Months after The East Japan Earthquake )” Yuya Sekiguchi / CC BY 2.0 (cropped)
- Related lab (Transport Control Lab): “Waru Interchange and City of Tomorrow Superblocks, bordering with Surabaya and Sidoarjo (July 2018).” consigliere ivan from Bontang, Indonesia / CC BY 2.0 (cropped)
- Related lab (Geosphere and Geotechnical Engineering Lab): “Niigata soil liquefaction” 作者不詳 / Public domain (cropped)
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