Only 1/2 of one percent closer?????

Then the gravity equation formulae [Newtons law of Gravity] will cause a multiplier effect equivalent to 4.800 percent [%] increase in the pound force.

Someone forgot to square the gravity number and mimamized the effect of a close approach of the moon.

Remember it was a Man named Roache- “Roche limit” that said the moon would fall apart if it came within 2 and 1/2 times the distance of its radius approaching another heavenly body.
Do not underestimate the fore of gravity.

The problem as I see it is the Japanese power plants are built in the wrong location. The 5 mile deep ocean trench and the wall next to the land is rebounding from a force that pushed up Japan in the first place 130-140 million years ago when it was on the earths equator.

The line of volcanoes to the south of Japan prove that the same magma exists under the trench wall that exist under all the volcanoes to the south. “Yes the volcanic eruption is related to the massive movement of the trench wall eight feet closer to the United States.
This wall is like a water bed on its side. The surface wants to slump down over the ocean trench 150 miles off shore- that 5 mile deep called the Japan Trench.
Under the middle of the land-ward side of the trench wall is liquid magma and it is contained in the middle of the wall.
Notice the focal point of all [95%] of the last 300 earthquakes in the last two weeks bisect the middle of the inner trench wall.

If the wall lets go as it did in Indonesia- the java-Sunda trench wall collapsing into the deapts of the trench a “MEGA-tsunami will occur.

This trench wall ,When it moved 8 feet toward the east , toward the Pacific it forced the magma under massive pressure to vent 950 miles to the south-hence you have the volcano erupting.
The same thing happened in Chile- The volcanoe erupting then was noticed by our people circling the planet in our spacecraft.