Board Thread:General Discussion/@comment-25156739-20150914163822/@comment-44307343-20200924225856

Context
Kira blows up a pier and a couple of yachts with his Stand, Sheer Heart Attack, because this short fat man is a mean guy. But the explosion isn't what's really important here. What's important for the calculation is what's said by Yotsuyu in the next chapter regarding an earthquake that SHA also caused. Normally, a Level Three earthquake, as determined by the Richter scale, would result in around 0.5 tons, or Building level. That would be simple enough, but this manga and setting is in the land of the rising sun. What's important is that Japan uses its own earthquake system, which is different than the Richter scale. Actually, this thing's existence may as well settle some new grounds for some already existing earthquake calcs, but I'm getting ahead of myself.

https://en.wikipedia.org/wiki/Japan_Meteorological_Agency_seismic_intensity_scale

The JMA system uses peak ground acceleration, which means I gotta work my way to measuring the minimal area in which Morioh would've been affected. Woohoo.

The Attempt
According to the first chapter of Part 8, Morioh has a center that's approximately 3 kilometers long. Using that, and this map below, we can get a measurement from pixel scaling to determine the length of Morioh in the long run. The center of Morioh is the notable tilted square. By the power of MS Paint and its magical properties, a single line can help us set up for the Pythagorean Theorem. Divide 3/150 to get about 0.02 km per pixel.

XCano showed me an example of how to line up a point, so the black line you see below is pointless, just an example to do something. It's just there, and it was easier for me to save an overlap of it to do work than to go back to previous edits of the map. Just bringing it up to solve confusion To get another line across to where one of the ends meet, we have to figure out where exactly on this map the explosion occured. Yotsuyu holds a map that shows where they are, and with it I get the source of the explosion to line it up to the best of my abilities. Let's consider that the ground is 1 inch deep because  God bless America  we don't want to wank anything.

679.69 km^2 * 1 inch = 17,244,822,000 liters according to Google.

Convert that into cubic meters and we get 17,244,822 m^3. Again, according to Google.

According to this friendly link, Dirt has a density of 1220 (kg/m^3).

Multiplying the density by our cubic meters will give us 21,038,682,840 kg.

To implement F=ma, we're going to use the lowest amount needed for a Level Three quake needed on the JMA scale, or 0.08. Multiplying the kg by that number gives us 1683094627.2 N.

Joules = work x distance. Assuming that the ground shifted at 0.1 meters to avoid wank and such, we simply move the decimal to the left one spot on our N result to get 168309462.72 J.

Converting that to Tons of TNT will give us 0.0402269270363289 Tons of TNT.

Other Attempts
Some other people have suggested that I use 0.5m, 0.75m, or even 1 meter for the shift in the ground, so I'll use all three to see what pops out. However, nobody had suggested if I should have changed the depth, so that remains unchanged for now.

0.5 Meter Shift
1683094627.2 Newtons x 0.5 meter shift = 841547313.6 Joules.

Converting that to TNT Tons = 0.20113463518164 Tons of TNT.

0.75 Meter Shift
1683094627.2 Newtons x 0.75 meter shift = 1262320970.4 Joules.

Converting that to TNT Tons = 0.301701952772467 Tons of TNT

1 Meter Shift
1683094627.2 Newtons x 1 meter shift = 1683094627.2 Newtons.

Converting that to TNT Tons = 0.402269270363289 Tons of TNT.

Trib's Idea
Trib had stated that shallow soil can vary from 10 to 20 inches in depth, so I'll use 10 (.254 meters) as the new lowball and get everything else done with the meter shifts.

0.5 Meter Shift
679.69 km^2 x 0.254 = 172,641,260 m^3.

Multiply that by 1220 for the density to end up with 210,622,337,200 kg.

Multiply the kg by 0.08 m/s^2 to get 16,849,786,976 N.

Multiply that by a shift of 0.5 meters to get 8,424,893,488 J.

Relay that to tons of TNT to get 2.0135978699809 Tons of TNT.

0.75 Meter Shift
679.69 km^2 x 0.254 = 172,641,260 m^3.

Multiply that by 1220 for the density to end up with 210,622,337,200 kg.

Multiply the kg by 0.08 m/s^2 to get 16,849,786,976 N.

Multiply that by a shift of 0.75 meters to get 12,637,340,232 J.

Relay that to tons of TNT to get 3.02039680497132 Tons of TNT.

1 Meter Shift
679.69 km^2 x 0.254 = 172,641,260 m^3.

Multiply that by 1220 for the density to end up with 210,622,337,200 kg.

Multiply the kg by 0.08 m/s^2 to get 16,849,786,976 N.

Multiply that by a shift of 1 meter to get 16,849,786,976 J.

Relay that to tons of TNT to get 4.02719573996176 Tons of TNT.

Final Tallies (UPDATED)
Earthquake at 0.5 Meter Shift: 2 Tons of TNT. Large Building level | Lowball

Earthquake at 0.75 Meter Shift: 3 Tons of TNT. Large Building level | Midball

Earthquake at 1 Meter Shift: 4 Tons of TNT. Large Building level | Highball

Alas, 8-B JoJo remains a myth

well the explosion scales to tusk and SP....BUT BECAUSE ITS FUCKING RIDUCLOUS. we are gonna say that its a outlier because there is no way a wall level stand like soft and wet jumps to the tiers of SP and tusk