PSN-L Email List Message
Subject: Re: Large earthquake near cost of Canada
From: "Thomas Dick" dickthomas01@.............
Date: Sun, 6 Jan 2008 21:45:31 -0600
> Not really. At my station the P-wave amplitude was about 1.5 micrometers
> zero to peak. Based on this, I computed an mb of 7.0, using AmaSeis'
> built-in magnitude calculations:
> I added an image showing the calculation window to this page:
> (You may have to refresh your browser to see the new image at the bottom.)
Thanks for taking the time for me. I didn't know. Because of the shallowness
of the focus and the closeness of your recording site, I "expected" P and S
to have a more similar amplitude.....I am not taking about my
recordings....it did surprise me that the Lehmans at my location seemed to
be noisey in the P to PcS arrival time frame. And since I am taking up your
time, another question, does the AS-1 show any directional
sensitivity....maybe as the result of improper setup?
Public Seismic Network Mailing List (PSN-L)
[ Top ]
[ Back ]
[ Home Page ]