PSN-L Email List Message

Subject: Re: Another unreported earthquake
From: Robert Thomasson rlthomasson@.........
Date: Wed, 8 Jul 2009 07:45:18 +0300


Ted,

Yes, I initially thought the same thing here in Reno, that it was too strong
of a signal to be from Baffin Bay, but it looks like it was.   Very
interesting. I have two horizontal sensors, both recently installed and
still in preliminary states of adjustment.  I got what I think is a nice
pattern on the NS sensor and nothing at all on the EW sensor.  Don't  know
if the lack of anything from the EW sensor is due to the poor initial state
of tune, but I suspect so.

Bob

On Wed, Jul 8, 2009 at 7:08 AM, tchannel  wrote:

> Hi Thomas Dick and all,    I think you are right.   I processed it using
> Baffin Bay and the P lined up perfectly.
> If this is the case, I was wrong to think it was closer, like here in
> Idaho. The signal looked too large for a 6.1 4100km away.
> I am very surprised.
> Thanks for you help.
> Ted
>
>
>
>
>
> ----- Original Message ----- From: "Thomas Dick" <
> dickthomas01@.............>
> To: 
> Sent: Tuesday, July 07, 2009 9:44 PM
> Subject: Re: Another unreported earthquake
>
>
>
>  tchannel wrote:
>>
>>> Hi Folks,
>>>  At about 19:19:00 utc we recorded a large signal,  As of yet, this has
>>> not been reported by the USGS site. Here is what I know,  All three of my
>>> sensors recorded it, big time.....
>>>  I have a new sensor in test which should respond to a North or South
>>> event.  This machine showed a big signature, so perhaps it came from N, or
>>> S.
>>>  Earthquake which happen in Idaho are sometimes not reported by the USGS
>>> for one to three days after the earthquake.   This may be the reason it has
>>> not been published yet.
>>>  Other states like Nevada or Utah have no such delays.
>>>  I would welcome your opinion.   If anyone recorded it.   My guess is a 3
>>> or 4m, in Idaho or close to.  I can not see a clear "S"  so I can't
>>> determined the degrees.     I see several helicorder in Idaho and Montana
>>> got it, but no identification yet.   The 6.1 in Baffin Bay was too far away
>>> for this signal.
>>>  Thanks Ted
>>>
>>>  wouldn't that be the time of arrival for P wave for the Baffin Bay
>> quake?
>> __________________________________________________________
>>
>> 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 http://www.seismicnet.com/maillist.html for more information.
>>
>
> __________________________________________________________
>
> 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 http://www.seismicnet.com/maillist.html for more information.
>
Ted,

Yes, I initially thought the same thing here in Reno, that it w= as too strong of a signal to be from Baffin Bay, but it looks like it was.= =A0=A0 Very interesting. I have two horizontal sensors, both recently insta= lled and still in preliminary states of adjustment.=A0 I got what I think i= s a nice pattern on the NS sensor and nothing at all on the EW sensor.=A0 D= on't=A0 know if the lack of anything from the EW sensor is due to the p= oor initial state of tune, but I suspect so.

Bob

On Wed, Jul 8, 2009 at 7:08 AM, t= channel <tcha= nnel@............> wrote:
Hi Thomas Dick and all, =A0 =A0I think you are right. =A0 I processed it us= ing Baffin Bay and the P lined up perfectly.
If this is the case, I was wrong to think it was closer, like here in Idaho= .. The signal looked too large for a 6.1 4100km away.
I am very surprised.
Thanks for you help.
Ted





----- Original Message ----- From: "Thomas Dick" <dickthomas01@........... com>
To: <psn-l@web= tronics.com>
Sent: Tuesday, July 07, 2009 9:44 PM
Subject: Re: Another unreported earthquake



tchannel wrote:
Hi Folks,
=A0At about 19:19:00 utc we recorded a large signal, =A0As of yet, this has= not been reported by the USGS site. Here is what I know, =A0All three of m= y sensors recorded it, big time.....
=A0I have a new sensor in test which should respond to a North or South eve= nt. =A0This machine showed a big signature, so perhaps it came from N, or S= ..
=A0Earthquake which happen in Idaho are sometimes not reported by the USGS = for one to three days after the earthquake. =A0 This may be the reason it h= as not been published yet.
=A0Other states like Nevada or Utah have no such delays.
=A0I would welcome your opinion. =A0 If anyone recorded it. =A0 My guess is= a 3 or 4m, in Idaho or close to. =A0I can not see a clear "S" = =A0so I can't determined the degrees. =A0 =A0 I see several helicorder = in Idaho and Montana got it, but no identification yet. =A0 The 6.1 in Baff= in Bay was too far away for this signal.
=A0Thanks Ted

wouldn't that be the time of arrival for P wave for the Baffin Bay quak= e?
__________________________________________________________

Public Seismic Network Mailing List (PSN-L)

To leave this list email PSN-L-REQUEST@.............. with the body of the messa= ge (first line only): unsubscribe
See h= ttp://www.seismicnet.com/maillist.html for more information.

__________________________________________________________

Public Seismic Network Mailing List (PSN-L)

To leave this list email PSN-L-REQUEST@.............. with the body of the messa= ge (first line only): unsubscribe
See h= ttp://www.seismicnet.com/maillist.html for more information.


[ Top ] [ Back ] [ Home Page ]