Recent content by @whut

These are natural responses. Also need to consider forced response when there may be much larger external factors. The sun may in fact be considered the eternal force.

The climate changes would be the first indications if the moon did shift its orbit.

The reason that the Earth has a wobble of precisely 433 days may be because that is the frequency that the moon will exert a periodic torque on the Earth's axis -- subject to the constraint that the annual signal also provides an amplifying forcing. I have an open-access paper submitted to...

Herb Archibald reported an interesting correlation between cyclic lemming populations that peak about every 4 years and lunar tidal cycles. Been discussing with him the possibility that this is straightforwardly calculated as an aliasing between the annual cycle and the primary lunar tidal...

By the way, scientists at NASA JPL were able to measure the Chandler wobble on Mars very recently -- the first time measured for a planet other than the earth. AGU Science News, 4 January 2021 https://eos.org/research-spotlights/first-detection-of-a-built-in-wobble-on-another-planet

They are all essentially arbitrary units indicating the strength of the interaction, which is routine for signal processing analysis. The top panel is the strength of the lunar declination, showing the 13.606 day draconic fortnightly cycle, and the longer term 18.6 year nodal modulation. The...

When it comes to Earth-Moon interactions, it's actually quite simple -- the moon's gravitational force will induce a rotational and axial torque on the earth and thus either slow down or speed up the earth's rotational speed, and also create a wobble in the earth's rotation. The latter is...

The article says: > "That's not particularly alarming — the planet's rotation varies slightly all the time, driven by variations in atmospheric pressure, winds, ocean currents and the movement of the core. " They forget to mention that the most significant factor is the lunar cycle, which shows...