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Models for evacuation procedures in big cities after massive earthquakes

27.11.2012
Tokyo Tech es Toshihiro Osaragi and colleagues report on models for evacuation procedures in big cities after massive earthquakes based on the behavior of people in Tokyo after the Tohoku-Pacific Ocean Earthquake on 11 March 2011.

Risk of fire and spatiotemporal distribution of stranded people after the earthquake.

Tokyo Tech es Toshihiro Osaragi and colleagues report on models for evacuation procedures in big cities after massive earthquakes based on the behavior of people in Tokyo after the Tohoku-Pacific Ocean Earthquake on 11 March 2011.

The details are also described in the November issue of Tokyo Institute of Technology Bulletin: http://www.titech.ac.jp/bulletin/
index.html

The Tohoku-Pacific Ocean Earthquake occurred on 11 May 2011. On this day all rail services in the Tokyo Metropolitan area were paralyzed amid the unprecedented confusion that followed the tremor.
Thousands people were unable to contact families and friends, and in a state of uneasiness, many decided to return home on foot. Main roads were heavily congested with both cars and people, a state which severely obstructed the movement of emergency vehicles.

Here, Toshihiro Osaragi at Tokyo Institute of Technology describes the construction of several models that describe decision-making and behavior of individuals attempting to reach home on foot in the wake of a devastating earthquake.

He has simulated the movement of individuals who have decided to return home on foot, and demonstrates the spatiotemporal distribution of those who might be exposed to hazardous city fires on their way home in the aftermath of a massive earthquake, which has been predicted to occur in the Tokyo Metropolitan area in near future.

Osaragi research underscores the importance of considering pedestrian flow under such extreme scenarios in order to establish emergency evacuation procedures. gUsing the model proposed, we can assess not only the potential number of stranded individuals, but also their detailed attributes,h says Osaragi. gSuch information would undoubtedly prove helpful in actual planning for immediate post-disaster mitigation.h

Reference:
Authors: Toshihiro Osaragi.
Title of original paper: Modeling a spatiotemporal distribution of stranded people returning home on foot in the aftermath of a large-scale earthquake.
Journal, volume, pages and year: Natural Hazards, Springer, (2012).
Digital Object Identifier (DOI): 10.1007/s11069-012-0175-8
Affiliations: Department of Mechanical and Environmental Informatics, Graduate School of Information Science and Engineering, Tokyo Institute of Technology.
Department website: osaragi@mei.titech.ac.jp

Further information:
Miwako Kato and Yukiko Tokida, Center for Public Information
Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8550, Japan
E-mail: kouhou@jim.titech.ac.jp
URL: http://www.titech.ac.jp/english/
Tel: +81-3-5734-2975, Fax: +81-3-5734-3661

About Tokyo Institute of Technology

As one of Japanfs top universities, Tokyo Institute of Technology seeks to contribute to civilization, peace and prosperity in the world, and aims at developing global human capabilities par excellence through pioneering research and education in science and technology, including industrial and social management. To achieve this mission, we have an eye on educating highly moral students to acquire not only scientific expertise but also expertise in the liberal arts, and a balanced knowledge of the social sciences and humanities, all while researching deeply from basics to practice with academic mastery. Through these activities, we wish to contribute to global sustainability of the natural world and the support of human life.

Website: http://www.titech.ac.jp/english/

Adarsh Sandhu | Research asia research news
Further information:
http://www.titech.ac.jp/english/
http://www.researchsea.com

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