What would be the physical effects of the asteroid impact?
So, the hypothesis is that late September/ early October 1999 the earth passes through a comets dust tail. This tail contains many fragments – some large, some small. One of the largest, just over 1/4 mile in diameter, strike the earth at an estimated impact speed of 60 km per second.
Effects of the impact:
- The fireball from the explosion will rapidly rise to the top of the atmosphere then spread laterally. This fireball would probably be 50-100 miles in diameter. Temperature of at minimum 100 million degrees at the centre. Any satellites overlooking the area instantly destroyed, the shock wave also crumpling any aircraft within thousands of miles.
- The initial earthquake wave races out at close to 1000 miles per hour. The Atlantic coastal areas of all Western Europe, Africa, and the east coast of North and South America will be severely damaged.
- The tsunami will follow shortly afterwards. Locations 1000 miles from impact site will have one- hour gap between quake and tsunami, 4,000 miles will have 4 hrs.
- The initial tsunami will be the worst, but many more over a period of days will follow.
- Secondary quakes are the next occurrence – especially for the areas on the border of the African and European plates. In particular, Southern France, Northern Italy, Greece and Northern Africa.
- Massive hurricanes form over impact site.
- Nuclear winter caused by dust reaching upper atmosphere.
As a comparison, consider the largest meteorite crater ever found in Europe recently discovered by Geologists prospecting for oil in the Barents Sea. It is also one of the largest in the world. It was formed 150 million years ago when an asteroid, possibly 500m (550 yards) across (the object described in I.69 is approximately 410 m or 450 yards across) and travelling at 30,000 km/h (19,000 mph) plunged into the sea off the coast of Norway.
“It would have caused worldwide devastation resulting in global climate change and the extinction of many species.
At the site of the impact there would have been a mushroom cloud of superheated steam. Temperatures of over 10,000 degrees centigrade would have melted many tonnes of rock. Gigantic tidal waves would then have raced around the world from Canada to Russia.
After the initial fury, dust and other particles thrown into the atmosphere would have created a cloud that blocked out the sunlight starting a “nuclear winter”. Many species not wiped out by the initial impact would have died out during the prolonged cold and lack of sunlight in this extended winter.”
Source BBC news site: