Protecting MBTA Subways from Floods & Tidal Surges

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Re: Protecting MBTA Subways from Floods & Tidal Surges

Postby The EGE » Fri Nov 09, 2012 5:51 pm

It's basically impossible for a hurricane, which is running south -> north or southwest -> northeast, to suddenly run straight west into Massachusetts Bay. It is, however, a possible trajectory for a nor'easter - but those generally don't come with large storm surges.
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Re: Protecting MBTA Subways from Floods & Tidal Surges

Postby MarkB » Fri Nov 09, 2012 7:25 pm

Hurricanes spin counterclockwise, which creates onshore (east-west)winds as the storm tracks north and approaches Boston. Nor'easters do the same thing, and certainly do cause storm surges. Nantucket lost 30 feat of shore to a nor'easter back in the early 1990s.
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Re: Protecting MBTA Subways from Floods & Tidal Surges

Postby Arlington » Fri Nov 09, 2012 8:16 pm

WSJ Free Article "Rethinking Waterfronts"

The risks from floods vary widely among coastal cities. New York and Boston are particularly vulnerable to a storm surge, but this is less a factor for more-inland cities such as Washington, D.C., and Baltimore, where officials say they are more concerned about flooding from heavy rain.

One approach to protect waterfronts from flooding would be to invest billions in infrastructure projects, such as sea barriers or the kind of giant levees found in some European cities. But given the fiscally strained state of most governments, such moves would be politically difficult.

More modest measures are more likely. Even before Sandy struck, many mayors were in the early stages of considering changes to building codes to require such things as locating emergency generators, fuel tanks and electrical-supply systems on higher floors at waterfront developments.
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Re: Protecting MBTA Subways from Floods & Tidal Surges

Postby Arlington » Fri Nov 23, 2012 2:37 pm

Nice blog post on "Tunnel Plugs" under development (working similar to flood gates)

http://secondavenuesagas.com/2012/11/21 ... nnel-plugs

Based on a longer article from the NYTimes:
http://www.nytimes.com/2012/11/20/scien ... aters.html
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Re: Protecting MBTA Subways from Floods & Tidal Surges

Postby Matthew Mitchell » Wed Nov 28, 2012 11:48 pm

MarkB wrote:Hurricanes spin counterclockwise, which creates onshore (east-west)winds as the storm tracks north and approaches Boston. Nor'easters do the same thing, and certainly do cause storm surges. Nantucket lost 30 feet of shore to a nor'easter back in the early 1990s.

And a cottage in Siasconset which my parents used to own. One of the TV stations had footage of it being washed out to sea. My parents were in house number three up on the Sankaty Bluff by then (they're in house number 5 now, not counting the place they house-sat in for a little while while number 5 was being built).
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