PSN-L Email List Message

Subject: RE: A Request
From: "Rolando Benitez" rbenitez@........
Date: Sat, 24 Aug 2002 22:30:38 -0600


Larry,
Thank you very much for your msg and for answering one of my questions.
Best regards,
Rolando

...-----Original Message-----
...From: psn-l-request@..............
...[mailto:psn-l-request@................. Behalf Of Larry Cochrane
...Sent: Saturday, August 24, 2002 9:56 PM
...To: psn-l@..............
...Subject: Re: A Request
...
...
...Rolando,
...
...I'll answer your question. Event files should not be filtered or 
...integrated,
...just send the raw data. This way others can apply different filters etc.
...Also, there should be a few minutes of data before the event and a few
...minutes of data after the event so that programs like WinQuake can figure
...out the noise level before and after the event. This is used to calculate
...the Md or Coda magnitude of the event.
...
...Regards,
...Larry Cochrane
...Redwood City, PSN
...
...----- Original Message -----
...From: "Rolando Benitez" 
...To: 
...Sent: Saturday, August 24, 2002 8:42 PM
...Subject: RE: A Request
...
...
...> Hello Chris,
...> What is the purpose of posting events at the PSN  web page? 
...Should we post
...> the raw data or an edited file? What should be the goal when filtering?
...> I am almost new in the list, a very ignorant one. Your comments on this
...> subject would be very appreciated.
...> Best regards,
...>
...> Rolando Benitez
...> Fraijanes, Guatemala
...>
...>
...>       It would be great to know what posting you were referring to.
...>
...>       There are two good reasons for going to very low frequencies:
...>       You may want to cut out man made noise.
...>       If you have severe wind / weather noise, you may need to 
...reduce the
...> frequency      quite a bit further.
...>       Very long period responses are available. The Lamont-Doherty
...> Cooperative Seismographic Network (LCSN) springs to mind.
...>       Do these considerations apply?
...>
...>       Regards,
...>
...>       Chris Chapman
...>
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...
...
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