A New Study of the Seismic Signals on September 11, 2001 in New York
Wednesday, June 9th, 2010
Seismic Signals Reveal Explosives Were Used at the WTC on 9/11, according to geophysicist André Rousseau (*)
Doctor André Rousseau, former researcher in geophysics at CNRS and specialist in sound waves, presents us with the results of his analysis of the seismic signals recorded on September 11, 2001 in New York and gives his point of view as a specialist on the question of the destruction of the three towers at the World Trade Center.
[Translated from the original French by SOTT.net]
Seismic signals were recorded on September 11 2001 during the period when the North and South Towers (respectively WTC1 and WTC2) were penetrated and collapsed, as well as during the collapse of Building 7 of the WTC (also known as WTC7), a building which had not been hit by a plane.
Among the seismic data published on this subject, it is the Palisades recording station, located 34 km north-east of Manhattan, which gives us the data most apt for analysis, particularly for determining their source. These wave graphs are taken from the publications of the Lamont-Doherty Earth Observatory of Columbia University (LDEO), as shown in figure 1 and figure 2.
Seismologists are puzzled in their analysis of signals recorded at this time, as the contradictions are significant. They are particularly intrigued by the presence of seismic “peaks” before the collapses (see figure 4). This text focuses on the study of seismic signals and aims to demonstrate that consistency only appears once we leave the official version of events. It gives rise to a new interpretation that renders the assertions of the “official version” null and void.
Study of the Composition of the Different Wave Graphs
The graphs that we have are the following:
- The signals in figures 1a & 1b match the moment when the planes hit WTC1 and WTC2 respectively.
- The signals in figures 2a and 2b match the collapsing of WTC1 and WTC2 respectively.
- The signal in figure 2e shows the collapse of WTC7.
Determination/indetermination of the Temporal Shocks from the Point of Origin of the Signals.
In the five examples, the origin of the signals was attributed, by the seismologists who published the data, to the impacts of the planes and the collapses of the buildings (Kim et al., 2001; Irvine, 2001; Hoffman, 2006). A study of the propagation of such seismic signals really belongs to applied geophysics, which examines the distance of propagation in relation to the nature of the sources. Normally in this type of study, the time of origin is known with great precision (down to the millisecond), necessary in order to calculate the propagation speed of the different waves. That isn’t the case here. In this case, the video used for the North Tower (WTC1) was from a recording made by CNN with a time stamp on the screen (Hoffman, 2006), and the results were compared with the method utilized by Lamont (Kim et al., 2001). A second method consisted of giving an approximate speed of 2km/s for a Rayleigh wave that traversed several stations (see figure 3) situated at various distances from the point of origin. The major inconvenience of this method is that the stations are not situated on a rectilinear line, that the surface terrain – in which the surface waves move – are different, and, moreover, they don’t have the same speed of propagation. The Hudson River is located on a fault line that separates to the west the sedimentary terrains of the Trias and Jurassic, with intrusions of dolerite, all of which are covered by recent Holocene sediment; and to the east, the crystalline and metamorphic formations of the Proterozoic, the Cambrian, and the Ordovician eras that are found there. These last formations are more rapid than those found to the west, which explains why the path WTC-MANY, the only site to the east of the Hudson, was more rapid than all the other paths, situated to the west. The speed of these formations closely depend upon the sedimentary cover traversed. In other words, it isn’t surprising to find that only the stations at Palisades (34 km), at Arny (67.5 km) and TBR (51 km) provide similar results because they are situated on similar geological formations. Also, the enormous indetermination of 2 seconds in the calculations fixing the time origin of each of the signals, attributed by the authors themselves (Kim et al.), oblige us to take some distance from the official conclusions.
Wave Graphs Attributed to the Planes Crashing Into the Towers
In the first place, we must pose a question about the meaning of such signals’ function with the cause attributed to them.
![Reblog this post [with Zemanta]](http://img.zemanta.com/reblog_e.png?x-id=136b9d28-7d5a-496e-b5df-2a9fcc36671d)






