PSN-L Email List Message

Subject: Re: Did anybody detect a seismic signature from the Vandenburg
From: George Bush ke6pxp@.......
Date: Sat, 22 Jan 2011 12:57:48 -0800


Geoff- thanks for responding to my query-

At 02:51 PM 1/21/2011, you wrote:
>I have a signal at 20:10:19 on January 20th UTC
>but it is not a classic seismic signal.

I would guess that it would not be a classic earthquake signature. 
The rocket engines increase to maximum power over a few seconds and 
then as the rocket rises the vibration slowly decreases. I would 
guess that there would not be a P wave and what we might see are the 
surface waves.

>Since I can not see signals less than
>4.0 at 6 degrees great circle I can
>believe that what I see is not related
>to this event.
>
>If you would give date time in UTC
>I can look that time +/- 30 minutes.
>send or post the results.

The launch was reported as 1:10 pm PST, Jan 21st which is 21:10 UT 
1/22/11. I do not know the actual exact time of the launch.

>I'm in Arizona and not California.
>Doubt Id see such an event here.

I agree, I am in California, but 300 miles up the coast from 
Vandenburg and did not see anything that looked unusual above the 
wave and surf noise. I was hoping that one of the stations in 
southern California might have detected something.

>geoff

And I would like to apologize for uploading the Vandenburg? file. I 
did not record a long-enough record to be able to see anything. If I 
knew how I would have deleted that file from the PSN server.



>-----Original Message----- From: George Bush Sent: Friday, January 
>21, 2011 6:09 PM To: psnlist@.............. Subject: Did anybody 
>detect a seismic signature from the Vandenburg launch yesterday?
>Yesterday Vandenburg AFB, CA launched a very large rocket at 1:10 pm 
>local time.
>See 
>http://latimesblogs.latimes.com/technology/2011/01/delta-iv-vandenberg-rocket.html
>Reports were that it could be herd for 50 miles around and so I 
>wondered if it could be seismically detected?
>
>I looked at that time from here but I am 300 mi away and all I could 
>see is Ocean noise.
>
>George
>__________________________________________________________



Geoff- thanks for responding to my query-

At 02:51 PM 1/21/2011, you wrote:
I have a signal at 20:10:19 on January 20th UTC
but it is not a classic seismic signal.

I would guess that it would not be a classic earthquake signature. The rocket engines increase to maximum power over a few seconds and then as the rocket rises the vibration slowly decreases. I would guess that there would not be a P wave and what we might see are the surface waves.

Since I can not see signals less than
4.0 at 6 degrees great circle I can
believe that what I see is not related
to this event.

If you would give date time in UTC
I can look that time +/- 30 minutes.
send or post the results.

The launch was reported as 1:10 pm PST, Jan 21st which is 21:10 UT 1/22/11. I do not know the actual exact time of the launch.

I'm in Arizona and not California.
Doubt Id see such an event here.

I agree, I am in California, but 300 miles up the coast from Vandenburg and did not see anything that looked unusual above the wave and surf noise. I was hoping that one of the stations in southern California might have detected something.

geoff

And I would like to apologize for uploading the Vandenburg? file. I did not record a long-enough record to be able to see anything. If I knew how I would have deleted that file from the PSN server.



-----Original Message----- From: George Bush Sent: Friday, January 21, 2011 6:09 PM To: psnlist@.............. Subject: Did anybody detect a seismic signature from the Vandenburg launch yesterday?
Yesterday Vandenburg AFB, CA launched a very large rocket at 1:10 pm local time.
See http://latimesblogs.latimes.com/technology/2011/01/delta-iv-vandenberg-rocket.html
Reports were that it could be herd for 50 miles around and so I wondered if it could be seismically detected?

I looked at that time from here but I am 300 mi away and all I could see is Ocean noise.

George
__________________________________________________________

George


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