coicidenze meteore e TLE... "firme" in campo radio

dalla ML VLF_Gorup giro questa mail di Thomas Ashcraft, dal New Mexico . l'argomrnto e' trattato anche in altri lavori pubblicati. Mi sembra possa interessare questo settore del Forum poiche ci sono i tre elementi che seguiamo...: meteore TLE e onde radio. Le correlazioni sono tutte da verificare e dimostrare, ma potrebbe essere un buon esercizio.
ciao
Renzo



While doing red sprite observing on May 20, 2012 I captured one image of
sprites that appear to be intersecting with meteors. Interestingly,
sprites may have a connection to space dust and meteors and there are
some research papers on the subject.

I posted an image that was taken with a modified Canon XS DSLR which has
near infrared sensitivity and also a video with ELF-VLF and 2.5 MHz
radio emissions.
http://www.heliotown.com/Sprite_May_20_2012_044541UT.html

In the video the tallest sprite element has a bend at the top possibly
towards the meteor trail.

( I think that Kevin P in Texas also recorded this sprite cluster? - Hi Kevin. )

Here are a couple of sprite/Meteor research paper links:
http://www.agu.org/pubs/crossref/1999/1999JD900962.shtml
http://www.mendeley.com/research/meteor-trails-columniform-sprites-4/

Thomas Ashcraft in New Mexico

PS: Radio recording is VLF-ELF on one channel. 2.5 MHz (WWV) on the other audio channel. I am finding this combination of radio wavelengths very good for sprites and lightning. The 2.5 MHz really rumbles with the distant lightning and the sprites usually have a distinct "pop" signature.