PSN-L Email List Message

Subject: Re: amateur seismologist database
From: Dave Nelson davenn@...............
Date: Fri, 04 Jul 2008 18:36:36 +1000

  you'll get me all teary eyed  ;)
   I so miss my old paper drum recorder that I had in New Zealand.   It was far to
big to ship to australia  :(
  Watching the ink pen trace out on the paper was indeed mesmerizing I used to
just sit there for many minutes at a time some times just watching the micro
seisms and other general man-made noise and then periodically I would be around
 when the alarm went off and the pen really started swinging!
 .... those were the days  ;)
Had a drum recorder first  then later on it ran concurrently with the digital system
till I left NZ.

take care
Dave Nelson

At 09:41 PM 7/3/2008 -0700, you wrote:
Yep... we're simply visually monitoring earth movements on a drum recorder, including but not limited to earthquakes.
I have a four foot long drum recorder at Gilroy Gardens Theme Park here in Gilroy CA,  and people from all around come just to see what earthquakes look like.  They are amazed we can actually see ocean activity 15 miles away and are mesmerized watching the pen movement. 


Jan in Gilroy CA

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