Acoustic vs. seismic waveforms

Click For Summary
SUMMARY

This discussion focuses on the correlation between atmospheric acoustic waveforms and ground seismic waveforms resulting from a charge detonation. Participants reference key equations, including the acoustic and seismic wave function equation and the wave equation, to analyze the relationship between the two types of waveforms. The conversation highlights the importance of original source data for accurate correlation and suggests consulting Tom Irvine from VibrationData.com for expertise in seismic analysis of manmade events. Additionally, a chronological timeline of the One World Trade Center collapse is presented, detailing the seismic and acoustic durations.

PREREQUISITES
  • Understanding of wave function equations, specifically the acoustic and seismic wave function equations.
  • Familiarity with seismic analysis techniques and methodologies.
  • Knowledge of chronological data interpretation in seismic events.
  • Basic principles of acoustics and their relationship to seismic activity.
NEXT STEPS
  • Research the acoustic and seismic wave function equations in detail.
  • Explore seismic analysis techniques used for manmade events, particularly those by Tom Irvine.
  • Study the principles of zero-time chronology in seismic events.
  • Investigate the differences between mono and stereo recording of seismic waves.
USEFUL FOR

Physicists, seismologists, engineers, and anyone interested in the analysis of waveforms from explosive events and their implications in structural integrity assessments.

Orion1
Messages
961
Reaction score
3

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}

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

Attachments

  • wtc1summary01.jpg
    wtc1summary01.jpg
    42.1 KB · Views: 323
  • wtc1level.jpg
    wtc1level.jpg
    22.9 KB · Views: 576
Last edited by a moderator:
Physics news on Phys.org
Why do you always post in blue?
 
In what way are you looking to correlate them?
 
In what way are you looking to correlate them?

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?
[/Color]
 
Last edited by a moderator:
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.
 
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:
One World Trade Center collapses:
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
[/Color]
 

Attachments

  • sd02.JPG
    sd02.JPG
    28.7 KB · Views: 617
Last edited:
Seismic Stereo...


Why are seismic waves recorded in mono instead of stereo?
[/Color]
 

Similar threads

  • · Replies 5 ·
Replies
5
Views
849
  • · Replies 3 ·
Replies
3
Views
726
  • · Replies 1 ·
Replies
1
Views
605
Replies
1
Views
2K
  • · Replies 29 ·
Replies
29
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 6 ·
Replies
6
Views
3K
Replies
1
Views
2K
  • · Replies 3 ·
Replies
3
Views
1K
  • · Replies 2 ·
Replies
2
Views
4K