PSN-L Email List Message
Subject: Re: New WinQuake Beta Releand and Re: Winquake 2.9.4
From: hammond hammond@...........
Date: Thu, 13 Mar 2003 17:46:52 -0900
I haven't calculated it but it looks to be from 0.1 - 0.4 seconds for the 5
Hz low pass 6-pole filter. I don't pick phase arrivals using filtered
data. Even so, your implied point is well taken. And Larry's comment is
very valid: the JB tables don't support arrivals any more accurately than
I was thinking (always dangerous) that I would like to measure phase
arrivals as accurately as possible given that I have a very accurate GPS
clock (better than +/- 100 ms), fast digitizer in a fast PC, etc.
> Just out of interest, what is the phase delay for P & S waves on
> the multipole filters that you are using?
> Chris Chapman
Public Seismic Network Mailing List (PSN-L)
[ Top ]
[ Back ]
[ Home Page ]