To: | [email protected] |
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Subject: | Re: VLF: Tweek mode resonances |
From: | Paul Nicholson <[email protected]> |
Date: | Thu, 27 Aug 2015 11:36:42 +0000 |
In-reply-to: | <9F755C841A0C40DEAAB4B1A3C94E7860@White> |
References: | <3EEE0BD431264721BAD95B0598D0A459@White> <[email protected]> <9F755C841A0C40DEAAB4B1A3C94E7860@White> |
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I had to wait a while for a UK thunderstorm. I didn't get sharp resonances like those on Stefan's spectrogram, except for a short period about an hour after the storm. By that time it had moved away to the north. H-field left hand circular: http://abelian.org/vlf/tmp/150822_sferic_modes_LH_25a.png H-field right hand circular: http://abelian.org/vlf/tmp/150822_sferic_modes_RH_25a.png H-field E/W loop: http://abelian.org/vlf/tmp/150822_sferic_modes_EW_25a.png H-field N/S loop: http://abelian.org/vlf/tmp/150822_sferic_modes_NS_25a.png Vertical E-field: http://abelian.org/vlf/tmp/150822_sferic_modes_VE_25a.png On a SID monitor the resonances are visible up to 40kHz or more, and there may be a hint up to 70kHz. I need to work on that to try to bring them out. -- Paul Nicholson -- |
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