http://ift.tt/1c2UtlA
If my calculations (using a virtual back of a virtual envelope) are correct, impact of a meteorite this size with the Earth would have a explosive value of a 40 Megaton bomb.
(Per: http://ift.tt/1c2Uru8 )
This would be similar to the meteorite impact that created the Barringer Crater. This site has calculations for both 20 and 40 Megaton bombs:
http://ift.tt/1o24aRf
It this had hit a city or populated area on this planet today the results would have been pretty devastating. I leave it as an exercise to the reader to calculate the effects. (There are lots of calculators on the 'net. ;))
And Cab Calloway sang about "The Silly Old Moon" when we actually need more friends like this.
Quote:
Scientists have reported spotting the biggest meteorite impact ever seen on the Moon's surface – after a 400kg (900lb) rock slammed into the lunar regolith at an estimated 17km/s, leaving a crater about 50 metres wide. |
If my calculations (using a virtual back of a virtual envelope) are correct, impact of a meteorite this size with the Earth would have a explosive value of a 40 Megaton bomb.
(Per: http://ift.tt/1c2Uru8 )
This would be similar to the meteorite impact that created the Barringer Crater. This site has calculations for both 20 and 40 Megaton bombs:
http://ift.tt/1o24aRf
Quote:
At the point of impact, the plants and animals, rock, and most of the meteorite were vaporized. Underlying bedrock was ejected and overturned, burying the land and anything else not already blown away by the air blast, out to a distance of between 1 and 2 km. The animals within 3 to 4 km of the impact site would have been subjected to winds exceeding 2000 km/hour and killed. A 50% casualty rate would occur between 9 and 14 km of the impact site due simply to bodies being picked up by the air blast and accelerated to a few to tens of kilometers per hour before being slammed back down again. Overpressures (the pressure above normal atmospheric pressure) would cause death to anything living within a radius of 2.7 to 3.2 km of the impact site and cause lung damage within a radius of 6.5 to 9.3 km for a 20 megaton explosion. In the case of a 40 megaton explosion, these distances would increase by an additional 1 to 2 km. Animals as far away as 16 to 24 km would have been injured severely. Vegetation would have been almost completely destroyed over an area of 800 to 1500 km2 around the Meteor Crater impact site. Fortunately, as Kring points out, the impact effects would have been severe only within that 800 to 1500 km2 area. No global extinction would have resulted. |
It this had hit a city or populated area on this planet today the results would have been pretty devastating. I leave it as an exercise to the reader to calculate the effects. (There are lots of calculators on the 'net. ;))
And Cab Calloway sang about "The Silly Old Moon" when we actually need more friends like this.
via JREF Forum http://ift.tt/1c2UtlE
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