PSN-L Email List Message

Subject: Re: Event 091025.105300 as seen from GVA ??
From: Larry Cochrane lcochrane@..............
Date: Sun, 25 Oct 2009 16:08:43 -0700

Hi Geoffrey,

This is happening because your system is saturation. Looking at your event file it 
looks like you are using a 8 Bit A/D converter. Upgrading to a 12 or higher bit 
converter would give you a lot more dynamic range so this would happen less often.

Larry Cochrane
Redwood City, PSN

Geoffrey wrote:
> Hey guys;
> In Winquake
> event file: 091025.105300 from GVA
> When I integrate this event the ground seems
> to drop at somewhere in the S or L wave and does
> not return to normal ?
> Does anyone understand this integrated waveform ?
> It looks to me like only the DC blocker circuit
> is returning the signal to its baseline.
> I have seen this before but do not understand it.
> In my wildest imagination I can in no other way
> explain this results of the integration.
> Is Arizona slowly sinking into the Earth ?
> Will we have another ocean where there used to be desert ?
> __________________________________________________________
> Public Seismic Network Mailing List (PSN-L)
> To leave this list email PSN-L-REQUEST@.............. with 
> the body of the message (first line only): unsubscribe
> See for more information.

Public Seismic Network Mailing List (PSN-L)

[ Top ] [ Back ] [ Home Page ]