re: About Krakatoa: first person reports

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310 decibels is loud enough to kill you. Ear drums rupture between 150 and 160 decibels. That means Krakatoa was exponentially higher on the decibel scale as a sound high enough to cause your ear drums to literally explode. A sound exponentially louder than anything likely to have been heard in thousands, perhaps millions of years.

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Difficult to comprehend how loud 310 dba really is to the human ear. Not much time to listen you're dead when it hits you from the associated shock wave. The decibel scales are logarithmic not linear.

Expressed as Sound Pressure Levels, a jet engine 100 feet away from you is around 140db while Krakatoa 100 miles away was estimated to be around 172db.

Big Bang indeed.