2007-02-14 00:13:22 · 6 answers · asked by phobosaffear 3 in Science & Mathematics ➔ Other - Science
Volcanos - according to this ( http://en.wikipedia.org/wiki/Krakatoa ) Krakatoa erupting - from the article:
"The 1883 eruption ejected more than 25 cubic kilometres of rock, ash, and pumice [1], and generated the loudest sound ever historically reported — the cataclysmic explosion was distinctly heard as far away as Perth in Australia (approx. 1930 miles or 3100 km), and the island of Rodrigues near Mauritius (approx. 3000 miles or 4800 km). Atmospheric shock waves reverberated around the world seven times and were detectable for five days[2]. "
Even louder are volcano super-eruptions, according to this ( http://armageddononline.tripod.com/volcano.htm ):
"The explosion would have a force 2,500 times that of Mount St. Helens. It would be the loudest noise heard by man for 75,000 years, the time of the last super volcano eruption. "
2007-02-14 00:23:19 · answer #1 · answered by sofarsogood 5 · 1⤊ 0⤋
The Krakotoa Volcanic erruption.
2007-02-14 20:30:46 · answer #2 · answered by MarkG 7 · 1⤊ 0⤋
I don't know about manmade, but the loudest thing to ever occur (that I know of ) was Krakatoa going up.
In New Zealand, hundreds and hundreds of miles away, they thought it was cannon fire.
2007-02-14 08:29:27 · answer #3 · answered by Jay R 5 · 0⤊ 0⤋
Aircraft.
If you live near an airport, you will agree!
Take-off of aircraft can lead to a sound level of more than 100 dBA at the ground.
2007-02-14 08:24:15 · answer #4 · answered by Yellowstonedogs 7 · 0⤊ 0⤋
I'd say atomic bomb blast made by man, and lightening/thunder ....
2007-02-14 08:23:42 · answer #5 · answered by Discoinferno 4 · 0⤊ 0⤋
spacecraft launches perhaps
2007-02-14 12:34:52 · answer #6 · answered by jac16888 2 · 0⤊ 0⤋