posted on Sep, 12 2011 @ 09:47 AM
These are the reuslts I got from the simulator, it would not be a global killer, but would create a huge tsunami.
Your Inputs:
Distance from Impact: 805.00 km ( = 500.00 miles )
Projectile diameter: 5.00 km ( = 3.11 miles )
Projectile Density: 1000 kg/m3
Impact Velocity: 20.00 km per second ( = 12.40 miles per second )
Impact Angle: 45 degrees
Target Density: 1000 kg/m3
Target Type: Liquid water of depth 3.8 km ( = 2.4 miles ), over crystalline rock.
Energy:
Energy before atmospheric entry: 1.31 x 1022 Joules = 3.13 x 106 MegaTons TNT
The average interval between impacts of this size somewhere on Earth during the last 4 billion years is 1.1 x 107years
Major Global Changes:
The Earth is not strongly disturbed by the impact and loses negligible mass.
The impact does not make a noticeable change in the tilt of Earth's axis (< 5 hundreths of a degree).
The impact does not shift the Earth's orbit noticeably.
Crater Dimensions:
What does this mean?
The crater opened in the water has a diameter of 44 km ( = 27.3 miles ).
For the crater formed in the seafloor:
Transient Crater Diameter: 14.5 km ( = 8.99 miles )
Transient Crater Depth: 5.12 km ( = 3.18 miles )
Final Crater Diameter: 20.6 km ( = 12.8 miles )
Final Crater Depth: 736 meters ( = 2410 feet )
The crater formed is a complex crater.
The volume of the target melted or vaporized is 4.88 km3 = 1.17 miles3
Roughly half the melt remains in the crater, where its average thickness is 29.7 meters ( = 97.3 feet ).
Thermal Radiation:
What does this mean?
The fireball is below the horizon. There is no direct thermal radiation.
Seismic Effects:
What does this mean?
The major seismic shaking will arrive approximately 2.68 minutes after impact.
Richter Scale Magnitude: 8.1
Mercalli Scale Intensity at a distance of 805 km:
III. Felt quite noticeably by persons indoors, especially on upper floors of buildings. Many people do not recognize it as an earthquake. Standing
motor cars may rock slightly. Vibrations similar to the passing of a truck.
IV. Felt indoors by many, outdoors by few during the day. At night, some awakened. Dishes, windows, doors disturbed; walls make cracking sound.
Sensation like heavy truck striking building. Standing motor cars rocked noticeably.
Ejecta:
What does this mean?
The ejecta will arrive approximately 7.27 minutes after the impact.
At your position there is a fine dusting of ejecta with occasional larger fragments
Average Ejecta Thickness: 751 microns ( = 29.6 thousandths of an inch )
Mean Fragment Diameter: 529 microns ( = 20.8 thousandths of an inch )
Air Blast:
What does this mean?
The air blast will arrive approximately 40.7 minutes after impact.
Peak Overpressure: 22700 Pa = 0.227 bars = 3.22 psi
Max wind velocity: 48.9 m/s = 109 mph
Sound Intensity: 87 dB (Loud as heavy traffic)
Damage Description:
Glass windows will shatter.
About 30 percent of trees blown down; remainder have some branches and leaves blown off.
Tsunami Wave:
What does this mean?
The impact-generated tsunami wave arrives approximately 1.2 hours after impact.
Tsunami wave amplitude is between: 84.3 meters ( = 276.0 feet) and 169.0 meters ( = 553.0 feet).