Fragment of the Chelyabinsk meteorite. Image Credit: Svend Buhl.
The meteor that exploded over Chelyabinsk, Russia on February 15, 2013 was so powerful that it sent out ultra-low frequency soundwaves that traveled around the world at least twice, according to new research published in the journal Geophysical Research Letters.
The meteor was estimated to be 17 meters (56 feet) in diameter and it weighed about 10,000 metric tons. It entered Earth’s atmosphere and approached Russia traveling at speeds near 20 kilometers per second (45,000 miles per hour). The meteor eventually exploded 19 to 24 kilometers (12 to 15 miles) above Earth’s surface. The shockwave from the explosion shattered windows and damaged buildings in nearby cities.
New analyses of data collected by a global network of 20 infrasound sensors indicate that some ultra-low frequency soundwaves from the explosion circled around the globe at least twice. Infrasound refers to low frequency sound that is below 20 Hz (Hertz) or 20 cycles per second. While humans are incapable of hearing infrasound, these soundwaves travel long distances and some animals such as whales and elephants can use this type of sound for communication purposes.
More - Link >>> http://earthsky.org/earth/explosion-from-russian-meteor-heard-round-the-world-twice
Source: EarthSky.org .
Related Blog Posts ---
Russian Meteor Infrasound 'Heard' in U.S. (2013 May 5):
1938 Fireball Explosion Over W PA Remembered (2013 March 11):
NASA Asteroid Search Program Decade Behind Schedule (2013 March 19):
Could a Comet Hit Mars in 2014? (2013 March 2):
Rare 40-pound Meteorite Found in Antarctica (2013 March 1):
Russia Meteor's Origin Tracked Down (2013 Feb. 26):
Rocket to Smack Asteroid Planned by Johns Hopkins University (2013 Feb. 25):
Russian 'Meteorite Rush' Begins as Scientists Find Fragments (2013 Feb. 18):
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):
Meteorite Hits Central Russia, 500+ People Hurt (2013 Feb. 15):
Space Miners: Earth-Buzzing Asteroid May Be Worth $195 Billion (2013 Feb. 13):
Feb. 15: Close Earth Flyby of Large Asteroid (2013 Feb. 4):
Want to receive SpaceWatchtower blog posts daily in your inbox ?
Send request to < email@example.com >..
Glenn A. Walsh, Project Director,
Friends of the Zeiss < http://friendsofthezeiss.org >
Electronic Mail - < firstname.lastname@example.org >
About the Editor/Author: < http://buhlplanetarium.tripod.com/#GAW >
SPACE & SCIENCE NEWS, ASTRONOMICAL CALENDAR:
Twitter: < https://twitter.com/spacewatchtower>
Facebook: < http://www.facebook.com/pages/
Blog: < http://spacewatchtower.
Author of History Web Sites on the Internet --
* Buhl Planetarium, Pittsburgh:
* Adler Planetarium, Chicago:
* Astronomer, Educator, Optician John A. Brashear:
< http://johnbrashear.tripod.com >
* Andrew Carnegie & Carnegie Libraries:
* Civil War Museum of Andrew Carnegie Free Library:
< http://garespypost.tripod.com >
* cable-car railway, Pittsburgh:
* Public Transit: