PSN-L Email List Message

Subject: Re: World Trade Center Collapse
From: BOB BARNS roybar@........
Date: Wed, 12 Sep 2001 10:12:22 -0400


Hi Bob,
  Yes, that was reported in the NY Times this morning.
I did not see it--my noise level is higher than Lamont's because their
sensor is several feet underground.  This reduces the effect of wind and
ocean waves.  Both were high here--the surf was 3-6' because of the
hurricane.
  Good to hear from you again.
Bob


> Bob Hancock wrote:
> 
> I believe that the collapse of both World Trade Center buildings were
> recorded by the Palisades station, a part of the Lamont-Doherty
> network.  The recording station was 31 miles from the World Trade
> Center on a heading of 012 degrees true.  When you access the site,
> use the following criteria:
> 
>     Station - PAL;       Component - E-W;       Frequency Band -
> Short-Period
> 
>     Date change is on the right hand side of the page      Previous -
> Next
> 
>     The first collapse appears the have happened about 1358 UTC (0958
> EDT) and the second colapse occurred about 1428 UTC (1028 EDT).
> 
>     Here is the link:
> 
> 
> http://www.ldeo.columbia.edu/cgi-bin/LCSN/WebSeis/24hr_heli.pl
> 
> 
> Bob Hancock
>
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Larry Cochrane <cochrane@..............>