Reply #115: The main station (SSPA) that picked up the imputed 10:06:03

[mhatrw]

seismic event (3 minutes after the 9/11 Commission says Flight 93 crashed) had a decent 2.5 to 1 S to N ratio and a clear event signature. However, this station was 107 km away from the crash site, resulting in a +/- 5 second margin of error.

The primary reason the LDEO data is more reliable is that is was FAR, FAR closer, but it also had a much better S to N ratio, as you suggested.

There was no evidence that Flight 77 registered a seismic signal, which fits perfectly with this new theory. I never quite understood why planes hitting the WTC towers resulted in measurable seismic events. Large basement explosions make far more sense.