Russian Meteor Infrasound 'Heard' in U.S.

Hearing the Russian Meteor, in America: Sound Arrived in 10 Hours, Lasted 10 More

May 3, 2013 — How powerful was February's meteor that crashed into Russia? Strong enough that its explosive entry into our atmosphere was detected almost 6,000 miles away in Lilburn, Ga., by infrasound sensors -- a full 10 hours after the meteor's explosion. A Georgia Tech researcher has modified the signals and made them audible, allowing audiences to "hear" what the meteor's waves sounded like as they moved around the globe on February 15.

---

Infrasound signals associated with the Russian meteor impact on February 15, 2013, recorded nearly 9,600 km away in Lilburn, Georgia. The sound took about 10 hours to travel from Russia to Georgia. (Credit: The seismic data is distributed by the IRIS DMC, TA/USArray network/Image from video courtesy of Georgia Institute of Technology)

Lilburn is home to one of nearly 400 USArray seismic/infrasound stations in use in the eastern United States. They are part of a large-scale project named "Earthscope," an initiative funded by the National Science Foundation that studies Earth's interior beneath North America. The stations are mainly deployed to record seismic waves generated from earthquakes, but their sound sensors can record ultra long-period sound waves, also known as infrasound waves.

The human ear cannot hear these infrasound signals. However, by playing the data faster than true speed, Georgia Tech faculty member Zhigang Peng increased the sound waves' frequency to audible levels.

More - Link >>> http://www.sciencedaily.com/releases/2013/05/130503105033.htm?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+sciencedaily%2Fspace_time+%28ScienceDaily%3A+Space+%26+Time+News%29

Sources: Georgia Institute of Technology, ScienceDaily.com .

Related Blog Posts ---

1938 Fireball Explosion Over W PA Remembered  (2013 March 11):

Link >>> http://spacewatchtower.blogspot.com/2013/03/1938-fireball-explosion-over-w-pa.html

 

NASA Asteroid Search Program Decade Behind Schedule (2013 March 19):

Link >>> http://spacewatchtower.blogspot.com/2013/03/nasa-asteroid-search-program-decade.html

Could a Comet Hit Mars in 2014? (2013 March 2):

Link >>> http://spacewatchtower.blogspot.com/2013/03/could-comet-hit-mars-in-2014.html

 

Rare 40-pound Meteorite Found in Antarctica (2013 March 1):

Link >>> http://spacewatchtower.blogspot.com/2013/03/rare-40-pound-meteorite-found-in_1.html

Russia Meteor's Origin Tracked Down (2013 Feb. 26):

Link >>> http://spacewatchtower.blogspot.com/2013/02/russia-meteors-origin-tracked-down.html

 

Rocket to Smack Asteroid Planned by Johns Hopkins University (2013 Feb. 25):

Link >>> http://spacewatchtower.blogspot.com/2013/02/rocket-to-smack-asteroid-planned-by.html

Russian 'Meteorite Rush' Begins as Scientists Find Fragments (2013 Feb. 18):

Link >>> http://spacewatchtower.blogspot.com/2013/02/russian-meteorite-rush-begins-as.html

Russian Meteor: Fragments Found; NASA Revises Estimates; UN Action? (2013 Feb. 17):

Link >>> http://spacewatchtower.blogspot.com/2013/02/russian-meteor-fragments-found-nasa.html

Meteor Fall Recovery Begins in Russia (2013 Feb. 16):

 Link >>> http://spacewatchtower.blogspot.com/2013/02/meteor-fall-recovery-begins-in-russia.html

Asteroid Buzzes Earth in Record-Breaking Flyby (2013 Feb. 15):

Link >>> http://spacewatchtower.blogspot.com/2013/02/asteroid-buzzes-earth-in-record.html

Meteorite Hits Central Russia, 500+ People Hurt  (2013 Feb. 15):

Link >>> http://spacewatchtower.blogspot.com/2013/02/meteorite-hits-central-russia-500.html

 

Space Miners: Earth-Buzzing Asteroid May Be Worth $195 Billion (2013 Feb. 13):

Link >>> http://spacewatchtower.blogspot.com/2013/02/space-miners-earth-buzzing-asteroid-may.html

 

Feb. 15: Close Earth Flyby of Large Asteroid (2013 Feb. 4):

Link >>> http://spacewatchtower.blogspot.com/2013/02/feb-15-close-earth-flyby-of-large.html

gaw

Glenn A. Walsh, Project Director,
Friends of the Zeiss < http://friendsofthezeiss.org >
Electronic Mail - < gawalsh@planetarium.cc >
About the Editor/Author: < http://buhlplanetarium.tripod.com/#GAW >
SPACE & SCIENCE NEWS, ASTRONOMICAL CALENDAR:
< http://buhlplanetarium.tripod.com/#news >
Twitter: < https://twitter.com/spacewatchtower >
Facebook: < http://www.facebook.com/pages/SpaceWatchtower/238017839577841?sk=wall >
Blog: < http://spacewatchtower.blogspot.com/ >
Author of History Web Sites on the Internet --
* Buhl Planetarium, Pittsburgh:
  < http://www.planetarium.cc >
* Adler Planetarium, Chicago:
  < http://adlerplanetarium.tripod.com >
* Astronomer, Educator, Optician John A. Brashear:
  < http://johnbrashear.tripod.com >
* Andrew Carnegie & Carnegie Libraries:
  < http://www.andrewcarnegie.cc >
* Civil War Museum of Andrew Carnegie Free Library:
  < http://garespypost.tripod.com >
* Duquesne Incline cable-car railway, Pittsburgh:
  < http://inclinedplane.tripod.com >
* Public Transit:
  < http://andrewcarnegie2.tripod.com/transit >