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Was there an earthquake in NY/NJ? (Original Post) Renew Deal Jan 2016 OP
Sorry. Must have been something I ate. jberryhill Jan 2016 #1
USGS says sonic boom. Brickbat Jan 2016 #2
I see that. What does that mean? Renew Deal Jan 2016 #4
A sonic boom happens when a plane, rocket or whatever travels faster than the speed of sound KamaAina Jan 2016 #5
"Supershear earthquakes" (?) Donkees Jan 2016 #7
Here you go..... jberryhill Jan 2016 #3
Chris Christie had the burrito plate at Tijuana Fats. 11 Bravo Jan 2016 #6
 

KamaAina

(78,249 posts)
5. A sonic boom happens when a plane, rocket or whatever travels faster than the speed of sound
Thu Jan 28, 2016, 04:28 PM
Jan 2016

around 740 mph. It's called "breaking the sound barrier".

Donkees

(31,417 posts)
7. "Supershear earthquakes" (?)
Thu Jan 28, 2016, 04:49 PM
Jan 2016
http://www.livescience.com/46747-super-deep-super-fast-earthquakes.html

"An earthquake occurs when two sides of a fault rip apart, opening up like a zipper. Faults can slide side-by-side or up-and-down, or a combination of both directions. The event unleashes waves of seismic energy. Certain types of waves called shear waves usually travel faster than the rupture unzips, but in supershear earthquakes, the rupture catches the shear waves.

When the rupturing fault moves faster than the shear waves, the waves of energy pile up like the Mach cone surrounding a jet flying faster than the speed of sound, creating a phenomenon akin to a seismic sonic boom."
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