[thesausageking]

The authors discuss the impact on wildlife:

> In the Keyser Pod experiment, the cumulative sound exposure level (SELcum) value was 191.29 dB re 1 μPa2s at a distance of 10 meters from the transmitter. Note that this value is within the limits defined by Marine Mammal Protection Act (MMPA) for all marine mammals except for mammals that lie within high-frequency cetacean hearing group. However, there were no mammals from this group (or any other group) within the 10-meter radius of the transmitter.

[throw827474737]

190 dB ???!? Is that different under water, and how much is left after 10m?

I mean 130-140 dB is the jet engine and the range were exposure without plugs is painful and longer than few seconds causes damage. This is 6 magnitudes higher, how can this be a good idea?

(Sounds like microwave wireless energy transmission: it's great, unless you care for birds which just get roasted if they fly through the beam?!).

[thesausageking]

Sound pressure readings under water are different than in the air. They're measured at 1µPa instead of 20, and water has a higher impedance.