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Originally posted by cavtrooper7
Missile launches.That is what I see.
Originally posted by axslinger
Originally posted by cavtrooper7
Missile launches.That is what I see.
That's what I see as well.
3. It could also be smoke plumes from possible small open vents. The area you circled on the map happens to be close to the Hyblean Escarpment Fault line to the east and the Pernicana Fault line to the north. Some small vents may have opened in the ocean floor causing some of the smoke plumes and the sounds. Sicily lies totally on the Eurasian plate, although right on its boundary with the African plate. The African plate is subducting under the Eurasian plate. A small sudden shift may have caused both the sound and the smoke plumes.
Did you happen to feel any small vibrations when this event happened? If so, then its possible that a small earthquake caused the small vents to open releasing the smoke plumes and the sound.
I hope this opinion is of some help, you may want to look into those options listed above for further information.
Originally posted by silo13
reply to post by Erectus
Welcome to ATS! I hope you enjoy your stay!
3. It could also be smoke plumes from possible small open vents. The area you circled on the map happens to be close to the Hyblean Escarpment Fault line to the east and the Pernicana Fault line to the north. Some small vents may have opened in the ocean floor causing some of the smoke plumes and the sounds. Sicily lies totally on the Eurasian plate, although right on its boundary with the African plate. The African plate is subducting under the Eurasian plate. A small sudden shift may have caused both the sound and the smoke plumes.
Did you happen to feel any small vibrations when this event happened? If so, then its possible that a small earthquake caused the small vents to open releasing the smoke plumes and the sound.
I hope this opinion is of some help, you may want to look into those options listed above for further information.
This has great possibility - thank you.
The area in question has revealed some vents in the past. There have been small EQ's keeping things hopping for days now. Also, Mt. Etna is always active and the area where the first series of pics were taken? There used to be an old lava flow in that same direct area.
So yes, there's a great possibility what your saying is true - along with a heft coincidence with the 'practice' for the air show to confuse the issue.
Interesting though - the practice? If that's what it was? So much more fantastical than the actual show. Yeah, interesting that.
peace
Originally posted by dutchmilpo
Hmm.. it took some pondering, but what You observerd were three jets flying low, pulling up sharply, 7 or 8 g's, and igniting the afterburners. After the sharp pull, the pilot shuts-off the afterburner (because they gobble fuel like mad) and tries to get above the clouds as fast as possible, so it appears to suddenly disappear. The trail of the after-burner, and the puff of the shut-down will linger for quite some time.
Believe me afterburners sound like the god of thunder re-incarnated, and can only be used on registered practices, because they violate about every noise-regulation outside air-force bases.
The low flying and pulling-up, is a classic maneuvre to spoof coastal radar stations. I.E. Come-in very VERY low, so the defence missiles cannot trace the plane, drop anti-radar missiles, pull up sharply and accellerate like the devil is on Your heels, to evade eventual AA gun placements.
Flying very low above the water dampens the noise of the jet-engine significatly, especially when the waves are a tad choppy.
Choppy waves tend to act a bit like the egg-carton shaped foam stuff one finds on the walls of recording studio's.
First one only hears the very low frequencies( the rumbling You noticed), because the chop dampens and scatters the higher frequencies quite effectively. When the jet gets above a certain height, the sound seems to "suddenly" explode towards the observers. Scaring the heebies out of the unaware.(also a favourite tactics to "smoke-out" unfriendlies. The noise-pressure of after-burners is SO high, that people lose their coordination for a moment. Successfully demonstrated by the Dutch airforce when trains got hi-jacked at Wijster in the 70's... look it up!)
Of course they cannot really fire anti-radar missiles, so they simulate it. The pilots and the controllers only see a red dot and hear a "beep" ... bit boring, actually..
(I was stationed at an air-force basis when in the service)
ps: forgot to mention. For demo's and shows, they inject diesel in the exhaust, making for great, fat smoke. Stinks like bad oil lamps, though.edit on 11/6/12 by dutchmilpo because: addendum
Do you not find it strange that people gathering or waiting for the practice didn't film your 'strange' event?
I take it that you have never seen the Italian Air Force Aerobatic team Frecce Tricolori display?