PSN-L Email List Message

Subject: Re: Help me LEARN
From: "Ted Channel" tchannel@............
Date: Fri, 26 Feb 2010 11:28:24 -0700


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 -----=20
  From: GPayton=20
  To: PSN Network List=20
  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,







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=20 a bit to the left.   The reason I use this for the beginning, = is=20 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=20 and end that they used.   If they started at 10:05 and ended = at 11:05=20 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=20
To: PSN Network List
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 often=20 embarrassed to ask a question and turn to the books to try to resolve = my=20 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 & = S=20 times.  To me, that seems like I get a bouncing ball BEFORE I = actually=20 drop it!  What did I do wrong?  Is this a matter of the = "tables"=20 being off?  Or, am I wrong in assuming it is incorrect?
 
    2)    Another "pause" that I = have when=20 using WinQuake of any event is HOW LONG to plot it.  Obviously, a = local=20 event would be short, a regional would be a little longer and a = teleseismic=20 may be over an hour.  But, I was wondering IF there was a = rule-of-thumb=20 time that you experienced people use?
 
Thanks & Best regards,
Jerry

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