Seismic Evidence Implies Controlled Demolition on 9/11

Washington’s Blog

André Rousseau is a Doctor of Geophysics and Geology, a former researcher in the French National Center of Scientific Research (CNRS), who has published 50 papers on the relationships between the characteristics of progressive mechanical waves and geology.

Dr. Rousseau is an expert on measurement of acoustic waves.

Rousseau says that the seismic waves measured on September 11th proves that the 3 buildings were brought down by controlled demolition. Specifically, in a new scientific article published by theJournal of 9/11 Studies, Rosseau writes:

The seismic signals propagating from New York on September 11, 2001, recorded at Palisades (34 km) and published by the Lamont-Doherty Earth Observatory of Columbia University (LDEO), have here been subjected to a new critical study concerning their sources. The aim of this paper is to demonstrate that the nature of the waves, their velocities, frequencies, and magnitudes invalidate the official explanations which imply as sources the percussion of the twin towers by planes and the collapses of the three buildings, WTC1, WTC2 and WTC7.


First of all, we show the contradictions in the official explanation between the seismic data and the timing of the events. Then we point out that it is strange that identical events (percussions of identical towers on the one hand, and collapses of identical towers on the other hand) at the same location would have generated seismic sources of different magnitudes. We demonstrate that only strong explosives could be the cause of such seismic waves, in accordance with the observed low frequencies. According to the nature of the recorded waves (body and surface waves), we can propose a location of each explosive source. According to the presence of shear waves or the presence of Rayleigh waves only, we hypothesize a subterranean … explosion.


Near the times of the planes’ impacts into the Twin Towers and during their collapses, as well as during the collapse of WTC7, seismic waves were generated. To the degree that (1) seismic waves are created only by brief impulses and (2) low frequencies are associated with energy of a magnitude that is comparable to a seismic event, the waves recorded at Palisades and analyzed by LDEO undeniably have an explosive origin.Even if the planes’ impacts and the fall of the debris from the Towers onto the ground could have generated seismic waves, their magnitude would have been insufficient to be recorded 34 km away and should have been very similar in the two cases to one another.
As we have shown, they were not.


We can only conclude that the wave sources were independently
detonated explosives ….


Controlled demolition of the three towers, suggested by the visual and audio witness testimony as well as by observations of video recordings of their collapses, is thus confirmed and demonstrated by analysis of the seismic waves emitted near the time of the plane impacts and at the moments of the collapses.

This seismic analysis is just one of multiple lines of scientific evidence implying that 3 buildings were brought down by controlled demolition:


2 Responses

  1. “…and the collapses of the three buildings, WTC1, WTC2 and WTC7….”

    A few clarifications…

    The twin towers did not collapse. They turned to dust in mid air. This is this observable directly (EXAMPLE) and we can also look at the debris on the ground and see that it does not even reach the height of the lobbies. (EXAMPLE)

    The word ‘collapse’, in relation to buildings, means for the building to drop down due to gravity overcoming structural resistance. If (the majority of) the building’s material is not to be found in and around its base then it did not collapse.

    How can a building collapse, but not be found in a heap on the ground?

    Seven buildings were destroyed on 9/11, not three (WTC 1, 2, 3, 4, 5, 6 and 7).

    The 22 story WTC 3 (Marriott hotel) almost completely disappeared, as did the main block of WTC 4. There are pictures of the loading bays and shopping malls underneath these buildings showing empty spaces just full of dust. These buildings are not to be found on the ground in a pile, nor in their basements. I wonder where they went?

    Even the TV news was asking questions….. at least until (I’m guessing) they were told to shut up and start rallying the country to go to war instead. (EXAMPLE)

    The seismic data actually shows very weak signals when compared to data recorded during controlled demolitions of smaller buildings. WTC7 barely registered a signal at all, and much of the footage shows people standing with their backs to the building as it came down – unaware anything was happening until people (who were looking at it) started screaming and running.

    Any form of kinetic energy destruction (bombs, thermite, nukes etc) would have to account for the 15 survivors inside WTC 1 who were between floors 4 and 22 as the building started coming apart. Pasquale Buzzelli was on floor 22 and he ‘surfed’ a wave of dust all the way down to the lobby were 14 other people survived. None of the survivors were burned or fried by explosions or thermite so that rules out a controlled demolition.

    None of them were buried or squished by 500,000 tons of material collapsing on top of them either. So that rules out a collapse too.

    The problem with 9/11 is that everyone starts with a theory first (bombs, fires, nukes, thermite etc) and then starts defending it.

    They should start looking at the evidence first and let the evidence define what happened, not their imagination. EXAMPLE

  2. I would like to know why there was a doctor’s convention on that day in N.Y.? OF ALL DAYS! That many of those people who died were union members and what union memorialized their deaths?

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