Correlation between meteors and VLF-ELF signals ?

As described in the publication at the link :
http://air-radiorama.blogspot.it/2014/02/meteor-counter-with-graves-radar.html
in cooperation with many people , and in particular with Paul Nicholson , after months of automatic collection of relevant selected time stamped events ,we have enough material for who would like to develop a study around .
The data of more than 40 days (538 Mb) with 1059 events are available as images at the link :
ftp://sidmonitor.for-more.biz/0zipped%20archive/

There are four images for each event :

 1) Raw spectrogram of the echo of the meteor

2) Time domain GPS time stamped and correlated strip chart of :

A) The demodulated meteor echo ( "ping" ) in CW in Turin - Italy 

B) The VLF survey in Cumiana-Italy

C) The VLF survey in Bielefeld -Germany

Peaks in B and C are typically supposed to be lightning strikes 

3) Echo spectrogram expanded in time for VHF and VLF-ELF with pallette for amplitude

4) Echo spectrogram expanded in time for VHF and VLF-ELF with pallette for amplitude with only two colours 

Meteor Counter with the GRAVES radar - Automatic study of correlation with VLF-ELF

A group composed from :

Fabrizio Francione
Paul Nicholson
Emanuele Pelicioli
Renato Romero
and me , with the help of AIR and CSP ( www.csp.it)
is setting an automatic  system to correlate the meteors events recorded from the VHF station of Strada Valpiana (Turin) with the VLF events recordered at the VLF station of Cumiana (Turin).

Some of the preliminary tests could be found here :

http://www.sidmonitor.net/gallery/station2.html

and on the following  images :