Bubble Curtains For Undersea Noise Attenuation...

[Fred Bloggs]

These are being used for a fairly huge wind farm construction project off the coast of Massachusetts (Vineyard Wind). It took a lawsuit to make them use it. They\'ve been used in other places and are easy to set up.

Basic science write-up and example recording here:

https://dosits.org/galleries/audio-gallery/anthropogenic-sounds/bubble-curtain/

Since the planet is getting to the point where every single last species and living organism is endangered or threatened, measures such as bubble curtains are becoming an essential requirement for almost any kind of big construction:

https://onlinepubs.trb.org/onlinepubs/trnews/trnews262rpo.pdf

 

[legg]

On Tue, 16 May 2023 04:45:59 -0700 (PDT), Fred Bloggs
<bloggs.fredbloggs.fred@gmail.com> wrote:

These are being used for a fairly huge wind farm construction project off the coast of Massachusetts (Vineyard Wind). It took a lawsuit to make them use it. They\'ve been used in other places and are easy to set up.

Basic science write-up and example recording here:

https://dosits.org/galleries/audio-gallery/anthropogenic-sounds/bubble-curtain/

Since the planet is getting to the point where every single last species and living organism is endangered or threatened, measures such as bubble curtains are becoming an essential requirement for almost any kind of big construction:

https://onlinepubs.trb.org/onlinepubs/trnews/trnews262rpo.pdf

I\'d always thought that bubbles presented a noise threat all their
own to marine life - mostly during their creation and extinction.

Wouldn\'t pile driver noise be transmitted via the sea bed?

RL

 

[Fred Bloggs]

On Wednesday, May 17, 2023 at 7:56:01 AM UTC-4, legg wrote:

On Tue, 16 May 2023 04:45:59 -0700 (PDT), Fred Bloggs
bloggs.fred...@gmail.com> wrote:

These are being used for a fairly huge wind farm construction project off the coast of Massachusetts (Vineyard Wind). It took a lawsuit to make them use it. They\'ve been used in other places and are easy to set up.

Basic science write-up and example recording here:

https://dosits.org/galleries/audio-gallery/anthropogenic-sounds/bubble-curtain/

Since the planet is getting to the point where every single last species and living organism is endangered or threatened, measures such as bubble curtains are becoming an essential requirement for almost any kind of big construction:

https://onlinepubs.trb.org/onlinepubs/trnews/trnews262rpo.pdf
I\'d always thought that bubbles presented a noise threat all their
own to marine life - mostly during their creation and extinction.

Wouldn\'t pile driver noise be transmitted via the sea bed?

It most certainly will be, but measurements are that it attenuates fairly quickly. NOAA is spending a lot of money researching the biological effects. The primary goal is to stay well below SPLs that cause real loss of survival capability, hearing loss and ruptured organs. Secondarily there is the goal of preventing disruption to the point the marine life abandons their home habitat for less viable habitats. Without hard data and reasonable limits, it\'s going to be difficult to regulate disruptive activity.

Causing temporary or permanent hearing loss
Causing a stress response
Forcing animals to move from their preferred habitat or divert from their migratory path
Disrupting feeding, breeding/spawning, nursing, and communication behaviors

Without hard data and reasonable limits, it\'s going to be difficult to regulate disruptive activity.

https://www.fisheries.noaa.gov/national/science-data/ocean-noise

RL

 

[Glen Walpert]

On Wed, 17 May 2023 07:58:22 -0400, legg wrote:

On Tue, 16 May 2023 04:45:59 -0700 (PDT), Fred Bloggs
bloggs.fredbloggs.fred@gmail.com> wrote:

These are being used for a fairly huge wind farm construction project
off the coast of Massachusetts (Vineyard Wind). It took a lawsuit to
make them use it. They\'ve been used in other places and are easy to set
up.

Basic science write-up and example recording here:

https://dosits.org/galleries/audio-gallery/anthropogenic-sounds/bubble-
curtain/

Since the planet is getting to the point where every single last species
and living organism is endangered or threatened, measures such as bubble
curtains are becoming an essential requirement for almost any kind of
big construction:

https://onlinepubs.trb.org/onlinepubs/trnews/trnews262rpo.pdf

I\'d always thought that bubbles presented a noise threat all their own
to marine life - mostly during their creation and extinction.

Wouldn\'t pile driver noise be transmitted via the sea bed?

RL

Air bubble curtains have been in use for over 25 years to reduce noise
from ships.

https://en.wikipedia.org/wiki/Prairie-Masker

Glen

 

[Carl]

On 5/17/23 10:43, Glen Walpert wrote:

On Wed, 17 May 2023 07:58:22 -0400, legg wrote:

On Tue, 16 May 2023 04:45:59 -0700 (PDT), Fred Bloggs
bloggs.fredbloggs.fred@gmail.com> wrote:

These are being used for a fairly huge wind farm construction project
off the coast of Massachusetts (Vineyard Wind). It took a lawsuit to
make them use it. They\'ve been used in other places and are easy to set
up.

Basic science write-up and example recording here:

https://dosits.org/galleries/audio-gallery/anthropogenic-sounds/bubble-
curtain/

Since the planet is getting to the point where every single last species
and living organism is endangered or threatened, measures such as bubble
curtains are becoming an essential requirement for almost any kind of
big construction:

https://onlinepubs.trb.org/onlinepubs/trnews/trnews262rpo.pdf

I\'d always thought that bubbles presented a noise threat all their own
to marine life - mostly during their creation and extinction.

Wouldn\'t pile driver noise be transmitted via the sea bed?

RL

Air bubble curtains have been in use for over 25 years to reduce noise
from ships.

https://en.wikipedia.org/wiki/Prairie-Masker

Glen

There\'s someone working on desalination by collecting the air right
above the ocean surface which is nearly 100% relative humidity and
passing it over a heat exchanger cooled by deep ocean water to condense
fresh water. Seems like collecting the air right where the bubbles
break the surface would make that even more efficient, and if you have
to have the bubbles anyway it might be an economical desalination scheme.

--
Regards,
Carl