PSN-L Email List Message
Subject: Re: Event file editor
From: Larry Conklin lconklin@............
Date: Wed, 03 Jun 2009 11:45:05 -0400
A spike is a spike in the eye of the beholder. There is nothing
automatic or analytical in the program. I just look at the data in
Winquake, and if there are obvious transients that I want to get rid of
the tool gives me a convenient way to zero them out. Most of the
transients I want to eliminate are caused by my wife walking into the
room directly above my sensor. The result is a very large walk-up
transient. Since she only goes in there to feed the cat, I call these
events "catastrophies". There isn't any doubt about their legetimacy.
Bob Hancock wrote:
> Sounds nice, but what is the logic that you are using to determine it is
> a "spike" and not a seismic wave? In addition a "spike" may be
> simultaneous with a seismic wave, how does the logic make a separation?
> Bob Hancock
> On Jun 3, 2009, at 7:40 AM, Larry Conklin wrote:
>> A couple of weeks ago, someone asked whether there was a convenient
>> way to edit spurious spikes out of an event data file. Since I have
>> the same problem, I decided to write a simple little program for
>> editing PSNTYPE4 event data files. The program prompts for the start
>> and end times of the segment you want to edit and replaces the
>> offending data samples with zeros. Not very fancy, but it works. If
>> anyone would like a copy of the tool and/or the source code, I would
>> be happy to send it to you.
>> Larry Conklin
>> Liverpool, NY
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