Sonar systems[…]generate slow-rolling sound waves topping out at around 235 decibels[…]. These sound waves can travel for hundreds of miles under water, and can retain an intensity of 140 decibels as far as 300 miles from their source.
140 dB is a gunshot at the source. About 190 in air pressure will cause an explosive shockwave that can kill a person. 235 dB in dense water pressure is…somewhat more violent, as we understand how the decibal curve works and molecular pressure at depth.
140 dB is a gunshot at the source. About 190 in air pressure will cause an explosive shockwave that can kill a person. 235 dB in dense water pressure is…somewhat more violent, as we understand how the decibal curve works and molecular pressure at depth.
But that means that a person would be killed even if they are miles away? Maybe tens of miles.
This R*ddit comment suggests that it’s only close-range that it’s reliably lethal.
Every 10dB is twice as much energy, so 235 dB is pretty scary.