GEOLOGY

Detailed explanation-1: -The loudest sound in recorded history came from the volcanic eruption on the Indonesian island Krakatoa at 10.02 a.m. on August 27, 1883. The explosion caused two thirds of the island to collapse and formed tsunami waves as high as 46 m (151 ft) rocking ships as far away as South Africa.

Detailed explanation-2: -The pressure wave generated by the colossal third explosion radiated out from Krakatoa at 1, 086 km/h (675 mph). The eruption is estimated to have reached 180 dB, loud enough to be heard 5, 000 kilometres (3, 100 mi) away.

Detailed explanation-3: -In general, sounds are caused not by the end of the world but by fluctuations in air pressure. A barometer at the Batavia gasworks (100 miles away from Krakatoa) registered the ensuing spike in pressure at over 2.5 inches of mercury. That converts to over 172 decibels of sound pressure, an unimaginably loud noise.

Detailed explanation-4: -Scientists believe the sonic boom was the loudest sound on earth to happen since the 1883 eruption of Krakatau in Indonesia, which was estimated to be 235 dB in the epicenter. It is reported that shifting along the subduction zone caused seawater to enter into the magma formed chambers below the island.

Detailed explanation-5: -The final explosion of Krakatau produced the loudest sound ever recorded in modern history, heard across more than 10% of Earth’s surface. Reports of what sounded like distant gunfire were reported from Australia and the island of Mauritius, more than 2, 800 miles (4, 600 kilometers) from the erupting volcano.