Wednesday, December 23, 2009

California "skyquake" waveform and a little history.

California skyquake waveform. Notice how sharp it is - no small tremblors leading up to the event. This is a massive sonic boom, not a quake. Where's jim Mori when I need him?

I'll see if i can dig up the 1992 skyquake data and post it for comparison.

- Steve Douglas






RELATED "AURORA" snippet from FAS website:

"Probably the most compelling evidence for such flight tests are the series of unusual sonic booms chronicled above Southern California, beginning in mid to late 1991. On at least five occasions, these sonic booms were recorded by at least 25 of the 220 US Geological Survey sensors across Southern California used to pinpoint earthquake epicenters. The incidents were recorded in June, October, November, and late January 1991.

Seismologists estimate that the aircraft were flying at speeds between Mach 3 and 4 and at altitudes of 8 to 10 kilometers. The aircraft's flight path was in a North North-East direction, consistent with flight paths to secret test ranges in Nevada. Seismologists say that the sonic booms were characteristic of a smaller vehicle than the 37 meter long shuttle orbiter. Furthermore, neither the shuttle nor NASA's single SR-71B were operating on the days the booms were registered.

One of the seismologists, Jim Mori, noted:

"We can't tell anything about the vehicle. They seem stronger than other sonic booms that we record once in a while. They've all come on Thursday mornings about the same time, between 6 and 7 in the morning."
These "skyquake" are a continuing phenomenon, with the most recent report over Orange County, CA coming on 20 July 1996. It is reported that the "quake" occurred around 3pm PST, fitting the "skyquake" pattern in the following respects:
  1. It occurred in a coastal area.
  2. Described as similar to an earthquake in some respects (rattling of loose objects, etc) but also like a boom (but no distinct double bang as far as is known).
  3. Severe enough to light up government and media switchboards, but no known damage.
  4. Not an earthquake (CalTech sensors saw nothing)
  5. Local military bases deny any knowledge.
  6. No known other source (eg explosion)
Intercepted radio transmissions are equally intriguing:<85>
"On Apr. 5 (a Sunday) and Apr. 22, radio hobbyists in Southern California monitored transmissions between Edwards AFB's radar control facility (Joshua Control) and a high-altitude aircraft using the call sign "Gaspipe." The series of radio calls occurred at approximately 6 a.m. local time on both dates.
"Controllers were directing the unknown Gaspipe aircraft to a runway at Edwards, using advisories similar to those given space shuttle crews during a landing approach. The monitors recorded two advisories, both transmitted by Joshua Control to Gaspipe: "You're at 67,000, 81 mi. out," and "Seventy mi. out, 36,000. Above glide slope."
Reported sightings of unusual high performance aircraft are not confined to the Southwestern United States. More recently, such observations have also been reported in other parts of the United States, as well as in Europe. These reports are particularly intriguing because they are difficult to reconcile with an experimental test program, since there would be no reason for test flights to be conducted in Europe. Rather, these reports would have to be understood in the context of the deployment of an operational aircraft."

Skyquakes: They're back!


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