Sorry, I guess I’m stupid. I was replying to a post that mentioned solar wind, and saw the image I posted, which shows not just the diurnal variation you mention, but marked fluctuations/variations or “jiggles” as stupid people like me describe them, on those diurnal variations.
And because I am so stupid, I noted the time/date as well. Then somebody smarter than me explained to me what UTC means.
And again, being that I am so stupid, I always thought that solar winds contained a crapload of charged particles, which some people call a geomagnetic storm. And I also apparently mistakenly believed that geomagnetic storms could affect the earth’s magnetic field, causing something like those “jiggles” I saw on the image I posted.
And I again, mistakenly, believed that those magnetic vibrations induced currents not only in the upper atmosphere but in the ground below us.
Accept my apologies for being so stupid.
There are two likely effects at play this week. We are nearing a new moon syzygy and the coronal hole is pouring lots of particles earthward.
If you want to see some good "ringing", dredge up the seismograms after the Japanese earthquake or the big earthquake the generated the tsunami in southeast Asia. The earth was literally "ringing" for weeks afterward.