PSN-L Email List Message

Subject: Re: Help me LEARN
From: "GPayton" gpayton@.............
Date: Fri, 26 Feb 2010 13:06:24 -0600


Thanks Ted,

I have a similar approach, in that I may add one minute ahead of the event - 
except local or regional as they come faster.  And, unless I am wrong, the 
first part of the trace "tells" the most information and data than the tail 
end does.

Jerry
  ----- Original Message ----- 
  From: Ted Channel
  To: psn-l@..............
  Sent: Friday, February 26, 2010 12:28 PM
  Subject: Re: Help me LEARN


  Hi Jerry,  I can tell you what I do for Q.2
  1  I note the event time and use it as the beginning time, or there about, 
As opposed to looking at the trace and blotting a bit to the left.   The 
reason I use this for the beginning, is because sometime if I don't I will 
unknowing cut off the p and s.    You may look at a trace and think you have 
it all copied, but you may only be seeing the longer frequencies, and miss 
the P .
  2 Another rule I use is if I wish to compare my trace with someone else's. 
For that I try to copy the same beginning and end that they used.   If they 
started at 10:05 and ended at 11:05 I use the same.
  3 If neither of these things are factors, I try simple to center the 
trace, leaving 10 or 15 mins, if front of and behind trace.   Not very 
scientific, but I like to see the signature more or less centered.

  Ted
    ----- Original Message ----- 
    From: GPayton
    To: PSN Network List
    Sent: Friday, February 26, 2010 8:04 AM
    Subject: Help me LEARN


    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,
    Jerry 







Thanks Ted,
 
I have a similar approach, in that I may add one minute ahead of = the event=20 - except local or regional as they come faster.  And, unless I am = wrong,=20 the first part of the trace "tells" the most information and data than = the tail=20 end does.
 
Jerry
----- Original Message -----
From:=20 Ted=20 Channel
To: psn-l@..............
Sent: Friday, February 26, 2010 = 12:28=20 PM
Subject: Re: Help me = LEARN

Hi Jerry,  I can tell you what I = do for=20 Q.2
1  I note the event time and use = it as the=20 beginning time, or there about, As opposed to looking at the trace and = blotting a bit to the left.   The reason I use this for the=20 beginning, is because sometime if I don't I will unknowing cut off the = p and=20 s.    You may look at a trace and think you have = it all=20 copied, but you may only be seeing the longer frequencies, and miss = the P=20 .
2 Another rule I use is if I wish to = compare my=20 trace with someone else's.   For that I try to copy the same = beginning and end that they used.   If they started at 10:05 = and=20 ended at 11:05 I use the same.
3 If neither of these things are = factors, I try=20 simple to center the trace, leaving 10 or 15 mins, if front of and = behind=20 trace.   Not very scientific, but I like to see the=20 signature more or less centered.
 
Ted
----- Original Message -----
From:=20 GPayton
Sent: Friday, February 26, = 2010 8:04=20 AM
Subject: Help me LEARN

After reading many posts on the PSN Net, it is = obvious that I=20 know very little as compared to MANY of you out there.   I = am=20 often embarrassed to ask a question and turn to the books to try to = resolve=20 my question(s).  Even at that, many time I fall short.
 
So!  Question:
 
    1)    Today's trace of = the 3.1=20 event in Oklahoma  displays in WinQuake that = both the=20 Pb & Sb were seconds=20 BEFORE the P &=20 S times.  To me, that seems like I get a = bouncing ball=20 BEFORE I actually drop it!  What did I do wrong?  Is this = a matter=20 of the "tables" being off?  Or, am I wrong in assuming it is=20 incorrect?
 
    2)    Another "pause" that I = have=20 when using WinQuake of any event is HOW LONG to plot it.  = Obviously, a=20 local event would be short, a regional would be a little longer and = a=20 teleseismic may be over an hour.  But, I was wondering IF there = was a=20 rule-of-thumb time that you experienced people use?
 
Thanks & Best regards,
Jerry

[ Top ] [ Back ] [ Home Page ]