^The Feat
Because the anime is bullshit and hilarious.
Basically, Hiei's unmastered DotDF vs Zeru is so powerful that it's summons to the mortal plane causes passive effects like the mass vaporization and explosions of large swathes of water well out to sea.
It's nice they're well into the foreground at any rate.
Demon = 92 pixels
Entrance = 997 pixels
Entrance/Demon = 10.837
Demon = 1.7 meters
Entrance = 18.423 meters
Going to be doing some foreground scaling to then find shit in the background.
Entrance = 59 pixels
Stadium Wall Height (Foreground) = 360 pixels
Stadium Wall Height (Background) = 290 pixels
Stadium Diameter = 1336 pixels
Stadium Wall Height (Foreground)/Entrance = 6.102
Stadium Diameter/Stadium Wall Height (Background) = 4.607
Stadium Wall Height = 112.417 meters
Stadium Diameter = 517.905 meters
It's just this shot, a bit more zoomed out with weird lighting effects. Either way, the mountain isn't on screen, ergo this gives me a minimum distance to work from.
Stadium Diameter = 484 pixels
Distance to Mountain = 713 pixels
Distance to Mountain/Stadium Diameter = 1.473
Distance to Mountain = 762.874 meters
I'd have loved the anime adapt this page, but I guess that was too much to ask? At least the location I use it further corroborated by this shot of the location after Sakyo detonated the stadium. Not even touching this shot... its 50 years in the past anyway. Could just be that the stadium was rebuilt to look the same. Either way, all low end here.
Distance to Mountain = 52 pixels
Distance Between Mountains = 795 pixels
Distance Between Mountains/Distance to Mountain = 15.288
Distance Between Mountains = 11,662.818 meters
Explosion Diameter = 154 pixels
Length = 325 pixels
Explosion Diameter/Length = 0.473
Explosion Diameter = 5,516.513 meters
Explosion Radius = 2,758.257 meters
Kind of hilarious that it this sequence implies the rocks jutting out of the water are in their own right small islands.
Explosion Radius = 621 pixels
Water Diameter = 744 pixels
Water Height = 460 pixels
Travel = 372 pixels
Water Diameter/Explosion Radius = 1.198
Water Height/Explosion Radius = 0.741
Travel/Explosion Radius = 0.599
Water Diameter = 3,304.392 meters
Water Height = 2,043.868 meters
Volume = (2/3)(PIr^2*H)
The logic here? I'm roughly treating it as a cylinder, but with a cone of the same diameter and height carved out of it to account for empty space.
r = Water Diameter/2
H = Water Height
Water Volume = 11,679,234,163.649 m^3
Water Density = 1,000 kg/m^3
Water Mass = 11,679,234,163,649 kilograms
Number of Explosions = 7
Total Water Mass = 81,754,639,145,543 kilograms
Travel = 1,652.196 meters
Time Frame = 0.208 seconds (24 fps; here and here)
Water Speed = Travel/Time Frame
Water Speed = 7,943.25 m/s
KE = 0.5mv^2
m = Total Water Mass
v = Water Speed
Anime Beginning of Dark Tournament Hiei's Dragon of the Darkness Flame Yield = 2,579,163,494,447,816,000,000 joules or 616.435 gigatons
Final Tally
Anime Beginning of Dark Tournament Hiei's Dragon of the Darkness Flame Yield = 616.435 gigatons