The official seismic data reveals that no seismic signal was recorded for the “alleged” crash of American 77 at 9:37 a.m. See below:
Source: https://911research.wtc7.net/mirrors/guardian/WTC/Seismic/WTC_PENT_KIM.htm
An “electrical disturbance” was recorded at 9:38: 52 a.m., which after we are told the aircraft crashed into the Pentagon.
Even a surface explosion should generate vibrations that are detected by seismic sensors.
The closest seismographic station was located in Maryland approximately 39 miles away, which did not record the impact. Detailed analysis of waveform data failed to reveal consistent P-wave or S-wave arrivals that would indicate a significant ground motion event.
The Seismologists could not identify a clear seismic signal associated with the aircraft impact at the Pentagon, despite analysing records from stations ranging from 63 to 350 km away.
To conclude
If the alleged aircraft striking the Pentagon’s exterior or the explosion that followed did not propagate elastic waves through the Earth’s crust with sufficient strength to be detected by the regional seismic network, then what exactly are we observing?
Thanks for reading and caring!
GREAT citizen investigative journalism, once again Mark. Thank you!
I'd like to, if I may, add some additional reading.
9/11 Truthers vs. The Seismic Evidence
No Primary or Secondary Waves Recorded
Article: https://911revision.substack.com/p/911-truthers-vs-the-seismic-evidence
Mark, I just went through your entire library on your current YouTube channel and you have literal gems that can never be lost or forgotten. Are you posting or have you posted those videos elsewhere like Rumble or odysse or Bitchute? If not I feel like I need to do my thing and archive everything on there. Thanks again buddy for everything you’re doing. Talk to you soon.
L