PSN-L Email List Message
Subject: Re: Mystery to Me
From: "GPayton" gpayton@.............
Date: Mon, 17 May 2010 10:12:55 -0500
OUCH! Or is that an Oooops? Thanks for the explanation. I'm surprised
that they didn't supply a little explanation to the photograph.
Many thanks, Bob. Now I can sleep (smile).
Jerry
----- Original Message -----
From: Bob Hancock
To: psn-l@..............
Sent: Monday, May 17, 2010 10:03 AM
Subject: Re: Mystery to Me
Jerry -
I called Dr. Haydar Al-Shukri today, and he told me the story of water in
the vault.
The vault was installed while he was working at St. Louis University, and
he is currently at the University of Arkansas at Little Rock. The wires
from the vault to the building were encased in PVC pipes. The seismometer
was manufactured by Guralp. One day the instrument stopped working and they
investigated as to why. After checking all the instrumentation in the
building, they opened up the vault and it was filled with water. It turned
out that a tree had fallen down and they brought in heavy equipment to
remove the tree. Driving over the buried PVC pipe, the heavy vehicle had
fractured the PVC pipe........then, there was a heavy rain, and water leaked
into the broken PVC pipe which filled the vault with water. The vault was
emptied and the instrument forward to Guralp for repair.
Mystery Solved !!!
Bob Hancock
On May 13, 2010, at 5:53 AM, GPayton wrote:
Looking at the photographs at
http://www.eas.slu.edu/Earthquake_Center/NM/UALR/ualr.pict.html I couldn't
help but be surprised at the last photograph. Water put in the vault? I've
never see this before; why? Anyone explain?
Thanks,
Jerry
OUCH! Or is that an Oooops? =
Thanks for=20
the explanation. I'm surprised that they didn't supply a little=20
explanation to the photograph.
Many thanks, Bob. Now I can sleep=20
(smile).
Jerry
----- Original Message -----
From:=20
Bob =
Hancock=20
Sent: Monday, May 17, 2010 =
10:03 AM
Subject: Re: Mystery to =
Me
Jerry -
I called Dr. Haydar Al-Shukri today, and he told me the story of =
water in=20
the vault.
The vault was installed while he was working at St. Louis =
University, and=20
he is currently at the University of Arkansas at Little Rock. =
The wires=20
from the vault to the building were encased in PVC pipes. The=20
seismometer was manufactured by Guralp. One day the instrument =
stopped=20
working and they investigated as to why. After checking all the=20
instrumentation in the building, they opened up the vault and it was =
filled=20
with water. It turned out that a tree had fallen down and they =
brought=20
in heavy equipment to remove the tree. Driving over the buried =
PVC pipe,=20
the heavy vehicle had fractured the PVC pipe........then, there was a =
heavy=20
rain, and water leaked into the broken PVC pipe which filled the vault =
with=20
water. The vault was emptied and the instrument forward to =
Guralp for=20
repair.
Mystery Solved !!!
Bob Hancock
On May 13, 2010, at 5:53 AM, GPayton wrote:
[ Top ]
[ Back ]
[ Home Page ]