Acoustic vs. seismic waveforms

1. May 5, 2006

Orion1

Is it possible to correlate the atmospheric acoustic vs. ground seismic waveforms from a charge detonation?

Are there any physicists on this forum that recognise the acoustic and seismic waveform signatures from a charge detonation?

Acoustic, Seismic wave function equation:
$$\psi (x,t) = A \sin (\omega t - k x)$$

Acoustic, Seismic wave equation:
$$\nabla^2 \phi = \frac{1}{v^2} \frac{\partial^2 \phi}{\partial t^2}$$

Reference:
http://www.911review.com/errors/wtc/imgs/wtc1level.jpg
http://www.911eyewitness.com/images/wtc1summary01.jpg
http://uscrisis.lege.net/911/911seismic.gif

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• wtc1level.jpg
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2. May 5, 2006

Mk

Why do you always post in blue?

3. May 5, 2006

FredGarvin

In what way are you looking to correlate them?

4. May 5, 2006

Orion1

To measure the properties of the energy source(s).

En absentia of the raw computer data source information, the attachment is my first attempt at a classical approach at correlating the acoustic amplitudes with the seismic amplitudes properties.

Is there a correlation?

When a building implodes, does it collapse into its negative amplitude spike corresponding to a vacuum pressure after the previous positive energy amplitude spike resposible for the primary implosion initiation?

In simpler terms, do buildings implode under vacuum pressure?

Last edited by a moderator: May 8, 2006
5. May 6, 2006

FredGarvin

Honestly I don't think you'd be able to do it without the original source data. However, I would pass you along to someone who I have seen do work in this area. You should try to get a hold of Tom Irvine over at VibrationData.com. I have seen him do seismic analysis on manmade events like this before. He does sometime post in the Vibration section of Engineering Tips.com as well.

6. May 8, 2006

Orion1

seismic chronology...

I believe that I have found a solution to the seismic-acoustic chronological timeline.

The attachment is my second attempt using zero-time chronology.

EDT = UTC - 4:00:00

Seismic:
14:28:?? UTC
10:28:35.714 A.M. EDT

duration = 40 s - data start to data end

Acoustic:
duration = 31.19 s - peak 1 to peak 6a

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Last edited: May 8, 2006
7. May 9, 2006

Orion1

Seismic Stereo...

Why are seismic waves recorded in mono instead of stereo?