Earth Rings Like a Bell

Walt posts this:

A magnitude 7.9 earthquake in Alaska, reported by the USGS on January 23, 2018 at 4:51 am Eastern Standard Time (EST), caused groundwater levels to spike in Florida as far as 3,800 miles away. Measuring devices in two Florida wells recorded sharp upward and downward spikes as the groundwater oscillated. This phenomenon has been observed in the past, such as after the magnitude 9.0 earthquake off the west coast of northern Sumatra that triggered the devastating tsunami in the Indian Ocean on December 26, 2004. The USGS describes this phenomenon in a fact sheet available here.