The Hidden Vulnerability of Mega-cities To Natural Disasters: Underground Spaces

Risks associated with underground urban expansion often poorly studied; Modeling events like floods, tsunami essential to risk assessment and planning

The rapid and extensive underground expansion of mega-cities - for subways, malls, parking and public utilities - takes place often with too little knowledge of associated risks and too few plans to minimize the effects of a natural disaster, United Nations University experts warn.

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<p><a href="http://www.physorg.com/news2687.html">The Hidden Vulnerability of Mega-cities To Natural Disasters: Underground Spaces</a></p> <p><b><i>Risks associated with underground urban expansion often poorly studied; Modeling events like floods, tsunami essential to risk assessment and planning </b></i> <br> <br>The rapid and extensive underground expansion of mega-cities - for subways, malls, parking and public utilities - takes place often with too little knowledge of associated risks and too few plans to minimize the effects of a natural disaster, United Nations University experts warn.</p>