Decibels
What does seismic testing sound like?
Airguns blast sound waves through the
water to penetrate the ocean floor to
depths of 10km or more
The sound waves reflect back to the surface receivers
according to the materials encountered.
The guns are fired non-stop every 10 - 40 seconds
sometimes for days
The blasts can be heard from 1000km away
and can reach 190 decibels
Human ear tissue dies at 180 decibels
Many ocean creatures depend on sound
for navigation and communication
Seismic testing is primarily used to
locate potential oil and gas deposits
The effects on marine life may include major
disruption to mass stranding's and fatalities
Sound can be as loud as 190 decibels.