PSN-L Email List Message
Subject: Re: Fiji area quake
From: John Lahr johnjan@........
Date: Sun, 09 Dec 2007 14:51:56 -0800
Check that you have the correct lat and lon for the Fiji event. It
was not 180 degrees away from the mid west.
For computed distances, see this USGS page:
This page includes two seismograms from Oregon:
At 02:03 PM 12/9/2007, you wrote:
>I don't think this is so simple. May be a quark in the software in
>reference to the location here in midwest -- too close to 180
>degrees. There is no doubt that I got a good record. The arrival of
>Pdiff appears the same as on the local university helicorder and if
>I try to place Pdiff and S manually, I can get phases to come in (if
>I use the locate feature in conjunction) but if I move S one way or
>the other just a little everything disappears..I even processed a
>2.4 locally about twenty minutes before with no trouble. So Larry's
>program works fine!
>----- Original Message ----- From: "Mark Robinson"
>Sent: Sunday, December 09, 2007 3:48 PM
>Subject: Re: Fiji area quake
>>Thomas Dick wrote:
>>>Is there anything wrong with the time or location for the 7.8
>>>quake today? I'm not able to put the data into Winquake and get
>>>phases. I certaining register the quake in the time frame that it
>>>was suppose to arrive.
>>I felt that quake here at almost 1800km distance and can confirm the time.
>>Looking at the traces I think it would be difficult to characterise
>>the event as instantaneous.
>>I was particularly struck by the huge very long period (~30min)
>>waves shown on the Kermadec LISS seismograph shortly after the
>>event (before they were obliterated by traces from subsequent hours).
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