Loading ...
Sorry, an error occurred while loading the content.

Yahoo - Old news - but relavent Chelyabinsk event - what was precise time? Any radiodata?

Expand Messages
  • drobnock
    (meteorobs) Chelyabinsk event - what was precise time? Any radiodata? Thomas, Not certain if this site was referenced to you about the Chelyabinsk Event:
    Message 1 of 1 , Apr 1, 2013
    • 0 Attachment
      (meteorobs) Chelyabinsk event - what was precise time? Any radiodata?
      Thomas,
      Not certain if this site was referenced to you about the Chelyabinsk
      Event:

      http://www.iris.edu/hq/news/story/waves_generated_by_russian_meteor_detected_crossing_the_us

      IRIS (Incorporated Research Institutions for Seismology) presented this
      information: "The Chelyabinsk meteor exploded in the atmosphere at
      approximately 03:20 GMT (9:20 AM local time) on February 15. The
      pressure wave from the blast caused significant damage in the city,
      breaking thousands of windows and injuring more than 1000 people. The
      energy from the blast created pressure waves in the atmosphere that
      rapidly moved outward from the terminal burst and spread around the
      globe. The downward directed blast coupled into the ground and spread
      outward as a seismic wave in the Earth. These two waves – the seismic
      wave in the Earth and the pressure wave in the atmosphere – travel at
      very different speeds. The waves in the ground travel quickly – at about

      3.4 km per second – and attenuate rapidly, whereas the waves in the
      atmosphere are much slower (~0.3 km per second) and can travel great
      distances."

      This report a PDF shows the detected pressure waves to North America:
      http://www.iris.edu/hq/files/Russian_Meteor_02262013.pdf

      I was expecting European VLF stations to detect a signature at the time
      of the event. As I presented to you, the Tunguska Event was of similar
      power and at the time receivers, ever so simple, were in operation but
      there was never any mention of a strange signature on the day of the
      event.
      Hope this helps.
      George John Drobnock



      Does anyone know the precise timings of the Chelyabinsk meteor strike?
      General timing was at 03:20 UTC on February 15, 2013.

      When did the ionization begin? Was there a radio meteor signature
      seconds before it became visible? Are there any VHF forward scatter
      captures?

      It appears that the strike was recorded very well in infrasound all
      around the globe.

      Is there any evidence of the strike in ULF or ELF or VLF radio data
      anywhere in the world?

      Any info welcome! Thank you in advance.

      Thomas Ashcraft - Heliotown - New Mexico
    Your message has been successfully submitted and would be delivered to recipients shortly.