PSN-L Email List Message

Subject: RE: earthquake activity in Indonesia
From: "Gary Lindgren" gel@.................
Date: Fri, 13 Feb 2009 17:44:18 -0800


Hi Ted,
I'm in Palo Alto CA. Tell me more about the shadow zone. I guess you saw
what I saw. The ringing went on for a hour or so.
Gary





-----Original Message-----
From: psn-l-request@.............. [mailto:psn-l-request@............... On
Behalf Of tchannel
Sent: Friday, February 13, 2009 5:31 PM
To: psn-l@..............
Subject: Re: earthquake activity in Indonesia

Hi Gary,  Where are you located?   I am in Idaho and the epicenter was 106 
degrees away.   So I was in the shadow zone between 104 and 140, for this 
earthquake and as a result I could not recieve either the P or S.

I did pick other phases, up here, but it was not much to look at.  I thought

it was around a 6.8m just by looking at it.   So I was surrprised when they 
first called it a 7.5m then a 7.0 then a 7.2     Normally, I would see a 
bigger signature even if it was a 7.0m

The reporting is less then perfect........I was also supprise to see an 
earthquake here in Idaho,  posted on the USGS site two full days after the 
event.   Someone must have been out of town.

Thanks, Ted

----- Original Message ----- 
From: "Gary Lindgren" 
To: 
Sent: Friday, February 13, 2009 5:52 PM
Subject: RE: earthquake activity in Indonesia


> About that Indonesian 7.2 earthquake, I didn't pickup the initial P and S
> waves, but about 30 minutes or so later I pick up the response showing 16
> second sine waves. I assume this is the earth ringing like a bell. The
> seismometer is a 23 second Lehman, E-W.
> Gary
>
>
>
>
> -----Original Message-----
> From: psn-l-request@.............. [mailto:psn-l-request@............... 
> On
> Behalf Of Thomas Dick
> Sent: Thursday, February 12, 2009 8:03 AM
> To: psn-l@..............
> Subject: earthquake activity in Indonesia
>
> John Search is away. Anybody know whether is activity is volcanic 
> activity?
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