Quieting the Global Growl
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Quieting the Global Growl
1–10 of 54 posts
Re: Quieting the Global Growl
#2Recently I saw a video of a dolphin that came up to a boat and was imitating the sound of a boat motor. It looked playful, but perhaps it was complaining about all the noise.
Re: Quieting the Global Growl
#3If you have the chance to listen to actual boat noise from an underwater microphone, you’ll be surprised at how loud it is and how far sound can travel. It’s less of a problem with pleasure boats and more of an issue with commercial ones like container ships. Other sounds that are loud underwater and harmful for animals include wind turbine noise (from spinning giant blades) and sonar pings.
Re: Quieting the Global Growl
#4If you have the chance to listen to actual boat noise from an underwater microphone, you’ll be surprised at how loud it is and how far sound can travel. It’s less of a problem with pleasure boats and more of an issue with commercial ones like container ships. Other sounds that are loud underwater and harmful for animals include wind turbine noise (from spinning giant blades) and sonar pings.
US Navy (and certainly others) kill many dolphins, whales and other sea life with their high powered sonar.
US also has high powered ultra low frequency radio (ELF) for communication to subs and that's got to be insane to wildlife.
Re: Quieting the Global Growl
#5Recently I saw a video of a dolphin that came up to a boat and was imitating the sound of a boat motor. It looked playful, but perhaps it was complaining about all the noise.
It think it was an orca, I saw this yesterday also. We're all curious what it's trying to communicate, but I like the idea of it repeating back to us what is a very annoying sound to them.
Re: Quieting the Global Growl
#6If you have the chance to listen to actual boat noise from an underwater microphone, you’ll be surprised at how loud it is and how far sound can travel. It’s less of a problem with pleasure boats and more of an issue with commercial ones like container ships. Other sounds that are loud underwater and harmful for animals include wind turbine noise (from spinning giant blades) and sonar pings.
US Navy (and certainly others) kill many dolphins, whales and other sea life with their high powered sonar. US also has high powered ultra low frequency radio (ELF) for communication to subs and that's got to be insane to wildlife. https://en.wikipedia.org/wiki/Project_Sanguine
sound and radio are of course waves in completely different media. why would low frequency radio waves be insane to wildlife? it's not like it's microwave (which would cook them) or pressure (sound) which directly physically damages their organs. almost by definition low frequency radio waves are low energy, so I don't see how this would be more dangerous to Flipper than my Wi-Fi router is to me
Re: Quieting the Global Growl
#7Recently I saw a video of a dolphin that came up to a boat and was imitating the sound of a boat motor. It looked playful, but perhaps it was complaining about all the noise.
It think it was an orca, I saw this yesterday also. We're all curious what it's trying to communicate, but I like the idea of it repeating back to us what is a very annoying sound to them.
"This is what you sound like idiot, those aren't even words!" -That Orca Probably
I've been highly amused at the tales of Orca's attacking yachts over the last few years too.
Re: Quieting the Global Growl
#8Earlier quoted context omitted.
US Navy (and certainly others) kill many dolphins, whales and other sea life with their high powered sonar. US also has high powered ultra low frequency radio (ELF) for communication to subs and that's got to be insane to wildlife. https://en.wikipedia.org/wiki/Project_Sanguine
sound and radio are of course waves in completely different media. why would low frequency radio waves be insane to wildlife? it's not like it's microwave (which would cook them) or pressure (sound) which directly physically damages their organs. almost by definition low frequency radio waves are low energy, so I don't see how this would be more dangerous to Flipper than my Wi-Fi router is to me
Well, some people do think their Wi-Fi routers can hurt them ... maybe we should make tinfoil hats for the cephalopods.
Re: Quieting the Global Growl
#9If you have the chance to listen to actual boat noise from an underwater microphone, you’ll be surprised at how loud it is and how far sound can travel. It’s less of a problem with pleasure boats and more of an issue with commercial ones like container ships. Other sounds that are loud underwater and harmful for animals include wind turbine noise (from spinning giant blades) and sonar pings.
According to this (highly interesting) paper I just read, it seems that the operating sounds of wind turbines come from the gearbox, which makes more sense to me because the blades of offshore turbines are turning very slowly. Also according to the same paper, the operating noises of offshore wind farms are probably not significant.
https://www.int-res.com/articles/meps2006/309/m309p279.pdf
As an aside, I love discovering a researcher with such a delightful niche. How many people are out there researching "Acoustically mediated fin whale mating"? Amazing humans.
Re: Quieting the Global Growl
#10Earlier quoted context omitted.
US Navy (and certainly others) kill many dolphins, whales and other sea life with their high powered sonar. US also has high powered ultra low frequency radio (ELF) for communication to subs and that's got to be insane to wildlife. https://en.wikipedia.org/wiki/Project_Sanguine
sound and radio are of course waves in completely different media. why would low frequency radio waves be insane to wildlife? it's not like it's microwave (which would cook them) or pressure (sound) which directly physically damages their organs. almost by definition low frequency radio waves are low energy, so I don't see how this would be more dangerous to Flipper than my Wi-Fi router is to me
Huh, sharks pick up EM signals, right? I wonder what they think of this stuff
But just to be clear, I don’t think we should suppose it is damaging and try to ask the military to stop using it (good luck, lol). It could be worth looking into though.