2019-01-21, 20:38
(This post was last modified: 2019-01-21, 20:57 by mwaters.
Edit Reason: Added last sentence
)
For some time --and especially in the past few days-- I have noticed that stations on either side of the US-Canada border sometimes pick up many more strokes in South America and far out into the Atlantic Ocean than more southern stations. This is after dark.
There's more to it than described above, but it seemed to me that propagation was also distinctly favoring N-S paths over E-W paths. Anyone else ever notice this?
The documents below confirm that that happens.
http://www.dtic.mil/dtic/tr/fulltext/u2/a267991.pdf
https://apps.dtic.mil/dtic/tr/fulltext/u2/a183261.pdf
Here's a screenshot of one page of the first pdf.
There much more extremely interesting information concerning ELF/VLF propagation there.
See also http://www.tau.ac.il/~colin/courses/Atmo...0waves.pdf
and
https://www.google.com/search?q=vlf+and+...ropagation
There's more to it than described above, but it seemed to me that propagation was also distinctly favoring N-S paths over E-W paths. Anyone else ever notice this?
The documents below confirm that that happens.
http://www.dtic.mil/dtic/tr/fulltext/u2/a267991.pdf
https://apps.dtic.mil/dtic/tr/fulltext/u2/a183261.pdf
Here's a screenshot of one page of the first pdf.
There much more extremely interesting information concerning ELF/VLF propagation there.
See also http://www.tau.ac.il/~colin/courses/Atmo...0waves.pdf
and
https://www.google.com/search?q=vlf+and+...ropagation