Rising Rock: Earth's Crust Has Its Own Tides, Too
by Mark Mancini May 2, 2018
If you earn your living on the ocean, you'd better know how to read a tide table. Around the world, most coastal communities witness sea level rise and fall multiple times every day. The effect can be quite dramatic: On certain days, there's a 53-foot (16-meter) difference between the low and high tides in Canada's Minas Basin Inlet. Working fishermen, divers and ship captains must take fluctuations like these into account. For this reason, governments release tables that predict the heights of future tides for different corners of the oceans.
Yet unbeknownst to many of us, the ground beneath our feet experiences tides of its own. The phenomenon goes by many names, including "land tides," "crustal tides," "Earth tides," and "solid Earth tides." No matter what you call the process, it's caused by the same forces that generate our better-known oceanic tides.
https://science.howstuffworks.com/environmental/earth/geology/rising-rock-earths-crust-has-its-own-tides.htm#mkcpgn=rssnws1
