PSN-L Email List Message

Subject: Re: My error
From: Angel sismos@..............
Date: Wed, 25 Apr 2007 00:10:23 +0000

Hello Ted,

Is your "seismo computer" on the internet even for a few minutes a day?? You could then use any of many time servers to set the clock on that computer.  There is even software that learns the drift of your clock and tries to keep it in closer time than a few seconds.


Tuesday, April 24, 2007, 11:30:22 PM, you wrote:


Hi Folk,  I think I have found  my mystery earthquake.  It was the  M3.7 04/24/2007 04:24:09 utc from Alaska


This is what happen, "someone might learn from my mistake"  I adjust my clock manually, often it is off by many seconds, I advance the clock to the next minute, and when the times match I push "okay" to reset my computer clock, to the correct time.  Works fine unless I put in an extra minute.  So instead of an adjustment of + 4 second I adjusted +64 seconds.


I went to the second station, we are operating, at the Museum.  That station recorded the same event and the P and S were placed correctly.  I was sure my problem had to do with my equipment, and this event was surely the Alaska  M3.7


I made an clock adjustment of +64 seconds to my station and the P and S were right on.


The thing that fooled me was I could not believe a M 3.7 from Alaska 4816km or 2992 miles from Boise was so pronounced.



Thanks, for you advise.   Ted


Best regards,


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