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- Even small asteroids can cause destruction via tidal wave.
- Hitting the oceans would be catastrophic
- Asteroid Impact- Global Firestorm
- Asteroid Impact- Climate Change
Asteroid Impact – TsunamiImpact leads to mega tsunamis that leave no survivors.Nick Strobel's Astronomy Notes 10, phD in Astronomy, BS Astronomy and Physics, and MS in Astronomy, “Effect of an Asteroid Impact on Earth”, June 4 2010, June 21, 2011, http://www.astronomynotes.com/solfluf/s5.htm,AR The oceans cover about 75% of the Earth's surface, so it is likely the asteroid will hit an ocean. The amount of water in the ocean is nowhere near large enough to "cushion" the asteroid. The asteroid will push the water aside and hit the ocean floor to create a large crater. The water pushed aside will form a huge tidal wave, a tsunami. The tidal wave height in meters = (distance from impact)-0.717 × (energy of impact)0.495/ (1010.17). What this means is that a 10-km asteroid hitting any deep point in the Pacific (the largest ocean) produces a megatsunami along the entire Pacific Rim.Some values for the height of the tsunami at different distances from the impact site are given in the following table. The heights are given for the two typical asteroids, a 10-kilometer and a 1-kilometer asteroid. The steam blasts from the water at the crater site rushing back over the hot crater floor will also produce tsunamis following the initial impact tsunami and crustal shifting as a result of the initial impact would produce other tsunamis---a complex train of tsunamis would be created from the initial impact (something not usually shown in disaster movies). Even small asteroids can cause destruction via tidal wave.Prado ’11, Mark Prado is an American physicist who worked in advanced planning in the US space program, and who is a consultant working overseas for multinational engineering and construction companies operating in remote parts of the world, which is akin to the business model for developing resources in remote places in space. Notably, Mr. Prado began his career working for the U.S. Patent Office (before changing work to the two fields above), which provided insider skills in applying for patents, which is crucial for private sector entities.) “Earth Impact by an Asteroid: Prospects and Effects,” June 22, 2011, http://www.permanent.com/a-impact.htm If an asteroid of size 200 meters hit the ocean (which covers 70% of the Earth), the tsunami (i.e., giant wave) it would create would inflict catastrophic destruction of coastal cities and substantial worldwide human casualties along coastlines. If an asteroid of size 1 kilometer hit Earth, it would cause a dust cloud which would block out sunlight for at least a year and lead to a deep worldwide winter, exhausting food supplies. The latter is what caused the dinosaur extinction, as well as other major extinctions of smaller creatures in geologic time scales. The 200 meter asteroid hits, which are far more common than the 1 km+ hits, wouldn't show up much in geologic histories on a global scale. Hitting the oceans would be catastrophicPrado ’11, Mark Prado is an American physicist who worked in advanced planning in the US space program, and who is a consultant working overseas for multinational engineering and construction companies operating in remote parts of the world, which is akin to the business model for developing resources in remote places in space. Notably, Mr. Prado began his career working for the U.S. Patent Office (before changing work to the two fields above), which provided insider skills in applying for patents, which is crucial for private sector entities.) “Earth Impact by an Asteroid: Prospects and Effects,” June 22, 2011, http://www.permanent.com/a-impact.htm The most damaging kind of impact would be an asteroid that hits the ocean, not the land. An asteroid hitting land causes mainly localized damage. An asteroid hitting the ocean can cause a tsunami (i.e., huge wave) that would inflict catastropic damage to coastal cities and assets to great distances. The Earth is covered 70% by oceans, so an ocean impact is more likely. Asteroid Impact- Global FirestormAsteroid will ensure global firestormsNick Strobel's Astronomy Notes 10, phD in Astronomy, BS Astronomy and Physics, and MS in Astronomy, “Effect of an Asteroid Impact on Earth”, June 4 2010, June 21, 2011, http://www.astronomynotes.com/solfluf/s5.htm,AR The material ejected from the impact through the hole in the atmosphere will re-enter all over the globe and heat up from the friction with the atmosphere. The chunks of material will be hot enough to produce a lot of infrared light. The heat from the glowing material will start fires around the globe. Global fires will put about 7 × 1010 tons of soot into the air. This would "aggravate environmental stresses associated with the ... impact." Asteroid Impact- Climate ChangeNEOs cause impact winter—starvation and disease resultLaunchspace Staff, ’09 (Launchspace Staff, Space News Magazine, 5/7/09, “The Asteroids are Coming,” 6/21/11, Lexis Nexis, MLK)
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