Upsweep sound

This sound was present when PMEL began recording SOSUS in August, 1991. It consists of a long train of narrow-band upsweeping sounds of several seconds duration each. The source level is high enough to be recorded throughout the Pacific. It appears to be seasonal, generally reaching peaks in spring and fall, but it is unclear whether this is due to changes in the source or seasonal changes in the propagation environment. The source can be roughly located at 54o S, 140oW, near the location of inferred volcanic seismicity, but the origin of the sound is unresolved. The overall source level has been declining since 1991 but the sounds can still be detected on NOAA's equatorial autonomous hydrophone arrays.

Category:

Science & Technology

Tags:

• Upsweep
• Sound

[RetroGamerSoul]

@Yuhi33 Call me crazy, but it sounds like machinery, but at the same time, strange and bizarre.

If it indeed is organic, is there reason to believe that the sound is emitted from one source and not multiple sources?

[pwninator345]

I would say Cthulhu, but I'm going to be different and say it's Dagon.

[rosydonut]

@Alicecoldangel

I know all this, yet don't quite understand what point you're trying to make. There are many species of whale which travel deep underwater, such as sperm whales.

This could be the sound of any one of those species, it doesn't have to be a big conspiracy.

[Alicecoldangel]

@rosydonut Dolphins and Porpoises are mammals, they breath air, and so does whales (dolphins and porpoises is actually two kinds of whales). If there is a subspecies of whales who lives deep underwater, they would need to visit the surface once in a while and breath.

And fishes and other species who aren't mammals are usually very quiet...

[boeingdude1]

we must know about earth, a mere thousanth, even millionth of what there is to know about planet earth.

[Verena1720]

this is 20x the normal speed (wikipedia)

[VitruvianMan90]

It sounds like two sperm whales getting freaky.

[rosydonut]

Couldn't it be some kind of animal? It sounds like the kind of sound a dolphin or poirpoise would make, or even a whale. Maybe just some kind of deep water species?

[j0phus]

@angeluscaligo I think you're thinking about lemurs.

[Bradc19]

sounds like something from Earthbound

[Farvai0]

@SummoningACryptid When we get the technology to go down, we can do, i guess

[SummoningACryptid]

@Farvai0 Sure, lets just go dive down to the absolute bottom of the ocean where the pressure can break your fucking body in half. Sounds legit.