Sounding an alarm over deep sea noise

In recent decades, humans have added raucous clatter to the primal chorus. Scientists note that the noise of a typical cargo vessel could rival that of a jet. Even louder, they say, are air guns fired near the surface from ships used in oil and gas exploration. Their waves radiate downward and penetrate deep into the seabed, helping oil companies locate hidden pockets of hydrocarbons.

Marine biologists have linked human noises to reductions in mammalian vocalisation, which suggests declines in foraging and breeding. Worse, the US Navy estimates that blasts from its sonars result in permanent hearing losses for hundreds of sea mammals every year and temporary losses for thousands.

The federal sound study examined all these noises but zeroed in on commercial shipping because it represented a continuous threat. Vessels for fishing and research, including new ships being built for NOAA, are already being quieted around the world. Other measures for quieting include adding layers of sound-absorbing tiles to the walls of noisy rooms as well as mounting engines, pumps, air compressors, and other types of reciprocating machinery on vibration isolators.

Please read our terms of use before posting comments
TERMS OF USE: The views, opinions and comments posted are your, and are not endorsed by this website. You shall be solely responsible for the comment posted here. The website reserves the right to delete, reject, or otherwise remove any views, opinions and comments posted or part thereof. You shall ensure that the comment is not inflammatory, abusive, derogatory, defamatory &/or obscene, or contain pornographic matter and/or does not constitute hate mail, or violate privacy of any person (s) or breach confidentiality or otherwise is illegal, immoral or contrary to public policy. Nor should it contain anything infringing copyright &/or intellectual property rights of any person(s).
comments powered by Disqus