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 -----
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 -----
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
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