Friday, February 15, 2013

Feb 15, 2013 Russian Meteor

Aloha, this post will be updated as more information becomes available and more data are processed. 

This morning in Russia a meteor exploded over the skies of Chelyabinsk (55.2N, 61.4E). The event occurred around 03:20 UTC today (Feb 15th). We, as members of the infrasound community are very busy and will be releasing bits and pieces as we go (look under @infrasoundhunter on twitter). This post will mostly contain results from our lab, although we retain the right to post anything we find totally awesome.

The CTBTO twitter account released the following image:

Results from the CTBTO IMS Infrasound Network. The event was picked up by 11 infrasound stations. (source)

Initial results from station I31KZ located ~600 km from the hypercenter, to the south. (source)

Initial results from I46RU located ~1,500 km from the hypercenter, to the east. (source)

More results from I31KZ. "Behold the infrasonic signature of the Russian Meteor, radiating from 8Hz down to 0.004 Hz - the deep end of sound" - isoundhunter (source)

Initial location released for the meteor, and the stations we have been talking about. Plotted in Google Earth.

"The 4mHz (0.004 Hz) low end for the Russian meteor infrasound corresponds to a 250s atmospheric oscillation, a wavelength of 85km. A BIG. Slow. Sound." - isoundhunter (source)

Russian Meteor in Hawaii!?
The CTBT IMS Infrasound site in Hawaii (I59US) seems to have recorded a signal from this event. The station I59US is located approximately 11,000 km from the source, with a travel time of 11 hours and 40 minutes.

There is an article in the Star Advertisor (unfortunetly it is behind a pay wall) but the figures are posted here

follow us on twitter and join the fun with #RussianMeteor and #infrasound

EDIT: We are still working on this amazing data set! I will be posting results as we finalize them.

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