PSN-L Email List Message
Subject: Re: Help me LEARN
From: Thomas Dick dickthomas01@.............
Date: Fri, 26 Feb 2010 09:54:06 -0600
> After reading many posts on the PSN Net, it is obvious that I know
> very little as compared to MANY of you out there. I am often
> embarrassed to ask a question and turn to the books to try to resolve
> my question(s). Even at that, many time I fall short.
> So! Question:
> 1) Today's trace of the 3.1 event in Oklahoma displays
> in WinQuake that both the *Pb* & *Sb* were seconds *_BEFORE_* the *P*
> & *S* times. To me, that seems like I get a bouncing ball BEFORE I
> actually drop it! What did I do wrong? Is this a matter of the
> "tables" being off? Or, am I wrong in assuming it is incorrect?
> 2) Another "pause" that I have when using WinQuake of any event
> is HOW LONG to plot it. Obviously, a local event would be short, a
> regional would be a little longer and a teleseismic may be over an
> hour. But, I was wondering IF there was a rule-of-thumb time that you
> experienced people use?
> Thanks & Best regards,
According to the St. Louis network
, this quake was not a good one ... they rated it as poor. I have
followed their analysis faithfully and such a rate makes for some poor
readings of the incoming times of wave types.
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