On Feb 24, 7:37 pm, David Dalton <dal...@nfld.com> wrote:
> What are some strategies for reducing ship, sonar, and
> seismic airgun array noise in the oceans in order to
> reduce negative effects on marine mammals?
Reduce the use of noise-generating propulsion technologies like
propellers.
Wooden ships and iron men? I don't think that'll work for oil
tankers.
Know about the Dyson fan AKA "air multiplier"? Rework its fluid
dynamics for water.
"Seismic airgun arrays" are going out of style in favor of passive
systems.
It's worth doing even ignoring benefits to wildlife because
turbulence is expensive.
> I have also posted this to sci.physics.acoustics and
> other groups so you might want to check for replies
> there as well if you are interested.
On Sat, 25 Feb 2012 00:07:50 -0330, David Dalton wrote:
> What are some strategies for reducing ship, sonar, and
> seismic airgun array noise in the oceans
You should ask the US navy. They have been in the noise
reduction business for decades. Maybe, however, most of
their work is still classified.
One result of the cold war game of silence has been a
propeller that reduces or eliminates cavitation at high
rotational speeds. Cavitation can produce some serious
noise.
In article <dalton-41B803.00075025022...@news.eternal-september.org>,
David Dalton <dal...@nfld.com> wrote:
> What are some strategies for reducing ship, sonar, and
> seismic airgun array noise in the oceans in order to
> reduce negative effects on marine mammals?
> I have also posted this to sci.physics.acoustics and > other groups so you might want to check for replies > there as well if you are interested.
I also just posted to sci.military.naval and other groups.
> What are some strategies for reducing ship, sonar, and
> seismic airgun array noise in the oceans in order to
> reduce negative effects on marine mammals?
> I have also posted this to sci.physics.acoustics and > other groups so you might want to check for replies > there as well if you are interested.
How about noise cancelling technology. Pass laws that say every ship
must carry an anti-noise source ?
> What are some strategies for reducing ship, sonar, and
> seismic airgun array noise in the oceans in order to
> reduce negative effects on marine mammals?
> I have also posted this to sci.physics.acoustics and > other groups so you might want to check for replies > there as well if you are interested.
How about noise cancelling technology. Pass laws that say every ship
must carry an anti-noise source ?
