Category Archives: security

Airborne plume dispersion in coastal areas

New York City, like most megacities including Tokyo, does not have mechanisms in place to evacuate the population of the entire city.  Even the direst catastrophic scenarios entail a strategy of sheltering in place for at least some of the … Continue reading

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Blast-proofing the PATH tunnels

For the past several months the Port Authority has led a concerted effort to enhance the security of the PATH tunnels that cross beneath the Hudson River.   The four underwater railway tunnels connect New Jersey to lower and midtown Manhattan.  … Continue reading

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Which way would airborne toxic gases blow during a terrorist release?

In the event of a terrorist release of a harmful chemical, biological or radiological (CBR) agent as a weapon in an urban area, the motion of the gas and particles is unpredictable.  Factors that contribute to the complexity of the … Continue reading

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