StarDestroyer.Net BBS

Darth_Zod wrote:didn't this just get posted a couple weeks ago?

Your Inputs:
Distance from Impact: 500.00 km = 310.50 miles
Projectile Diameter: 500.00 m = 1640.00 ft = 0.31 miles
Projectile Density: 8000 kg/m3
Impact Velocity: 250.00 km/s = 155.25 miles/s
Impact Angle: 25 degrees
Target Density: 1500 kg/m3
Target Type: Competent Rock or saturated soil

Energy:
1.64 x 1022 Joules = 3.91 x 106 MegaTons TNT
The average interval between impacts of this size somewhere on Earth is 1.3 x 107years

Crater Size:
What does this mean?


Transient Crater Diameter: 27.85 km = 17.29 miles
Final Crater Diameter: 43.17 km = 26.81 miles

The crater formed is a complex crater.

Thermal Radiation:
What does this mean?


Time for maximum radiation: 0.20 seconds after impact

Visible fireball radius: 31.2 km = 19.4 miles
The fireball appears 14.2 times larger than the sun
Thermal Exposure: 1.63 x 106 Joules/m2
Duration of Irradiation: 66 seconds
Radiant flux (relative to the sun): 24.7 (Flux from a burner on full at a distance of 10 cm)


Seismic Effects:
What does this mean?


The major seismic shaking will arrive at approximately 100.0 seconds.
Richter Scale Magnitude: 9.0 (This is greater than any shaking in recorded history)
Mercalli Scale Intensity at a distance of 500 km:

VI. Felt by all. Many frightened and run outdoors. Persons walk unsteadily. Windows, dishes, glassware broken. Knickknacks, books, etc., off shelves. Pictures off walls. Furniture moved or overturned. Weak plaster and masonry D cracked. Small bells ring (church, school). Trees, bushes shaken (visibly, or heard to rustle).

VII. Difficult to stand. Noticed by drivers of motor cars. Hanging objects quiver. Furniture broken. Damage to masonry D, including cracks. Weak chimneys broken at roof line. Fall of plaster, loose bricks, stones, tiles, cornices (also unbraced parapets and architectural ornaments). Some cracks in masonry C. Waves on ponds; water turbid with mud. Small slides and caving in along sand or gravel banks. Large bells ring. Concrete irrigation ditches damaged.

Masonry C. Ordinary workmanship and mortar; no extreme weaknesses like failing to tie in at corners, but neither reinforced nor designed against horizontal forces.
Masonry D. Weak materials, such as adobe; poor mortar; low standards of workmanship; weak horizontally.


Ejecta:
What does this mean?


The ejecta will arrive approximately 334.3 seconds after the impact.
Average Ejecta Thickness: 5.0 cm = 1.97 inches
Mean Fragment Diameter: 4.0 mm = 0.1575 inches


Air Blast:
What does this mean?


The air blast will arrive at approximately 1666.7 seconds.
Peak Overpressure: 63426.9 Pa = 0.6343 bars = 9.0066 psi
Max wind velocity: 109.4 m/s = 244.7 mph
Sound Intensity: 96 dB (May cause ear pain)
Damage Description:


Multistory wall-bearing buildings will collapse.

Wood frame buildings will almost completely collapse.

Glass windows will shatter.

Up to 90 percent of trees blown down; remainder stripped of branches and leaves.