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originally posted by: tadaman
a reply to: neutronflux
You can not provide an example of the type of graph you speak of.
I say it doesn't exist and you do not even know how to read the one I posted.
Because you are not being honest. You can not post a graph. Is it not ironic?
For pages you badgered me for not posting figures that were already included in the links I posted.
And here now, you can not do what ultimately I did.
Post your example or spam on. That would mark you as shill.
Your choice.
Forensic Seismology
blogs.scientificamerican.com...
The analysis of seismic waves provided also insights on what happened September 11, 2001 in New York. Seismograph stations around the city recorded the signals generated by the aircraft impacts and the subsequent collapse of the two towers of the World Trade Center (the Lamont-Doherty Cooperative Seismographic Network provides a rich collection of datasets of the seismic activity around N.Y.). The collapse of the south tower generated a signal with a magnitude of 2.1 and the collapse of the north tower, whit a signal of magnitude 2.3, was recorded by 13 stations ranging in distance from 34 to 428km.
Also these seismograms show a distinct pattern if compared to the pattern caused by a natural earthquake. There are no P or S Waves, but the impacts of the buildings on the ground generated a sudden peak of short-period Rayleigh Waves.
originally posted by: tadaman
a reply to: neutronflux
Thats spam, not an example of the type of graph you speak of that doesnt exist.
Because you lied and dont even know how to read a seismograph.
originally posted by: tadaman
a reply to: neutronflux
So post an example of a "proper" graph.
originally posted by: tadaman
a reply to: neutronflux
You just copied an old post.
You really can't form a single thought. If I check that for plagiarism, would any of that post even be yours originally?
Because you can't post an example of what you speak of, I think you dont even know where to look. So why even try with original thought.
originally posted by: tadaman
a reply to: neutronflux
And I said post an example. You can't because you dont even know where to look.
Forensic Seismology
blogs.scientificamerican.com...
The analysis of seismic waves provided also insights on what happened September 11, 2001 in New York. Seismograph stations around the city recorded the signals generated by the aircraft impacts and the subsequent collapse of the two towers of the World Trade Center (the Lamont-Doherty Cooperative Seismographic Network provides a rich collection of datasets of the seismic activity around N.Y.). The collapse of the south tower generated a signal with a magnitude of 2.1 and the collapse of the north tower, whit a signal of magnitude 2.3, was recorded by 13 stations ranging in distance from 34 to 428km.
Also these seismograms show a distinct pattern if compared to the pattern caused by a natural earthquake. There are no P or S Waves, but the impacts of the buildings on the ground generated a sudden peak of short-period Rayleigh Waves.
originally posted by: tadaman
a reply to: neutronflux
So just sidestepping the actual posting of an example of the type of graph you speak of.
You have failed miserably at disproving the nuclear demolition theory.
You can't even read the seismic graphs and you have the nerve to question others who can.
Post your example or spam on like some sort of crazed anti 911 truth movement shill.
originally posted by: tadaman
Ok one more
In fact, the recording for WTC1 (Fig. 2a) demonstrates the three types of wave characteristic of a brief explosive source confined in a compact, solid material: a P wave with a speed of 6000 m/s, the typical value for a very consolidated crystalline or sedimentary terrain (which is the case in the bedrock of Manhattan), an S wave with a speed of 3500 m/s, and a surface wave with a speed of 1800 m/s (a Rayleigh wave). These values match with those registered from an earthquake or seismic prospecting (see for example Kim et al. 2001).
On the other hand, the recording linked to WTC2 (Fig. 2b) does not show the P or S body waves observed for WTC1 but only the surface Rayleigh wave, for which the spreading of the amplitudes over the duration is different from that of WTC1. The propagation speed of 2125 m/s is also markedly different from that of WTC1. Further, this wave seems to be followed by a second Rayleigh wave four seconds later.
We find the same thing for WTC7 (Fig. 2c), where the calculation of the speed of the wave according to the determined origin time indicates a Rayleigh wave with a 2200 m/s speed. Note that the amplitudes are comparable to those of the waves emitted at the time of the crashing of the airplanes into the Towers. This wave seems to be followed by a second Rayleigh wave 6 or 7 seconds later.
In the three cases, the bell-like form points to an impulsive source of energy, not percussion on the ground due to the fall of debris. The total mass and the average mass of individual building fragments were relatively small and fell to the ground over a period of more than ten seconds (which is a very long time in geophysics). Also note that the duration of a seismic signal does not tell anything about the source, contrary to the amplitude and particularly the frequency
911truth.org...
You really want to keep going?
Edit to add:
Here are the figures from the analysis I posted again that just you can't be bothered to look at before debating.