PSN-L Email List Message

Subject: Re: [GVA] HELP ID EQ NOT YET REPORTED ???
From: "Geoffrey" gmvoeth@...........
Date: Tue, 4 May 2010 14:31:25 -0700


You Know...I should of known that !
Thanx Bob,
geoff

----- Original Message ----- 
From: "Bob Hancock" 
To: 
Sent: Monday, May 03, 2010 11:51 AM
Subject: Re: [GVA] HELP ID EQ NOT YET REPORTED ???


Hi Geoff -

Yes, I recorded it too.  The waveform and duration is typical of many aftershocks that I have recently recorded.  The USGS normally 
uses a cutoff of M 4.5 for events outside of the US, and M 2.5 for events inside the US,  However, with the recent M 7.2 event in 
Baja California, the USGS appears to have deviated from that policy and have listed many events with a lower magnitude.  Also within 
the past year, there have been a number of events further south and east along the San Andreas fault as it splits Baja California. 
If the event is not listed, it is possible that the USGS evaluated the event and found it did not meet their minimum magnitude for 
events outside of the US.

Bob Hancock


On May 3, 2010, at 1:08 AM, Geoffrey wrote:

> Hello PSN:
>
> I have received a signal which appears in TUC also
> Yet I see no reports anywhere.
>
> POSSIBLE_ORIGIN TIME:
> 04:55:35_2010MAY03_UTC
> It should be quite close to this time.
> Ml 4.0 RICHTER maybe 5.69 Degrees distance from
> Apache Junction AZ.
>
> Does Anyone know where this was.
>
> Regards;
> geoff
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