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Re: Asian tsunami

Subject: Re: Asian tsunami
From: bobw
Date: Jan 10 2005 18:29:52
Just a question of how water above the roots as weight might have
prevented uprooting? Seems a bit counter-intuitive--then again, that's
what I prides meself upon.
In looking atthe videos of the debris swept along by the tsunami, that
all may be quite the equivailant of enormous top-side loading, rather
than the flow-around quality of wind we're used to places like Chicago. 


tubs

Scott Cullen wrote:
Just a guess is that the water wrapped around the tunks and the
leeward resistance of that mass might have prevented breakage. And
the weight of the water downward onto the root systems might have
prevented uprooting. 

Scott Cullen

----- Original Message ----- From: "Ken" <ken@xxxxxxxxx.co.uk>
To: "UK Tree Care" <uktc@xxxxxx.tree-care.info>
Sent: Monday, January 10, 2005 7:58 AM
Subject: Asian tsunami
Has anyone else noticed when seeing the footage of the horrific
devastation caused by Boxing Day's tsunami in asia, how many trees
seemed to be left standing when everything else in the path of the
waves was swept away/ demolished?
Obviously the mechanical loads caused by the water will have, for the
most part, been quite different to a gale-force wind which would put
the load on the crown rather than washing around the trunks, but it
still seems incredible especially as so many seem to be growing in sand. 

Any comments ?

Ken








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