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Aun hay muchas cosas que desconocen del océano, así como océanos de otros planetas, si estuviera marte terraformado 0.55g g con una luna y atmósfera respirable con océanos planeados y trazados por ingeniería verían un nuevo océano y otro tipo de comportamiento del agua, se asombrarse como cambios en salinidad, presión del agua y gravedad afectan todo, teniendo una variabilidad que permite varios océanos, criaturas y planetas, sin dejar de ser realista. Observación.
In WWII (way before GPS was a thing), sofar bombs of spheres where used by downed planes and navy ships as a way to transmit their position. It was basically a bomb design to be thrown overboard and it would explode at the correct depth of the sofar channel. With at least 3 listening stations on shore, you could triangulate the position of the detonation with pretty good accuracy.
This water channel is responsible for Roswell. The scientist who discovered it wondered if there was a similar channel in the air (there is), so he got the US government to fund research into it. The government wanted to be able to hear if Russia did anything with nukes in the air without them knowing we were listening, so the whole operation was hush hush. When one of their listening balloons fell onto a New Mexico ranch, the military moved in to make sure Soviets couldn't get there first, but also weren't 100% what they should say as to why they were there. So yes, Roswell was a cover-up, but not in the way most conspiracy theories say.
@@jackcr2477 The Internet Historian on RU-vid is the only one I can identify. I know I've seen at least one other video talking about this, and read a quick article or two, but I'm not sure who wrote those. Also, Project Blue Book was basically the same thing, covering the evidence of government experiments misidentified as aliens by claiming they're swamp gas. Quinton Reviews has a video going more in depth on that.
ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-k4ygiQHSNDc.html That should help! It's a lecture by Robert A Muller regarding the true nature of events that led up to the Roswell alien conspiracy
when you hear references to "the layer" in submarine books/movies, this is what they're talking about. it's rather important in submarine warfare due to the sound trapping qualities.
That's not quite correct - military submarines cannot dive down to the SOFAR channel. The layer, as well as a related phenomenon, the surface duct, occur when the temperature of the water, and thus the speed of sound, changes rapidly with depth. This causes sound waves that hit this layer at a shallow enough angle to reflect off of it, and so for example a submarine that is sitting just below the layer can be extremely hard to detect for sufficiently far away surface ships. The duct occurs when sound waves are repeatedly reflected between the layer and the ocean surface, which can otoh greatly increase the range of sonar detection for objects that are within the duct.
That is exactly what happened, the equations for waves don't care if its sound, light, or voltage. With only a little fudging the sofar channel and fiber optics are the same type of waveguide.
@@piotrgradkowski6810 nothing can exceed speed of light it is the maximum speed anything can have in the universe speed of lights is technically not slower in fiber optic cables they just have to travel a longer distance in them as they don't go in a straight line in fiber optic cables and they are also absorbed by some particles and then rereleased
Minuteearth: A sound wave has traveled from Perth to Bermuda. Me: *Water* you talking about? I can't *sea* how that's possible. Wow, that's a lot of likes. Thanks!
@@KuruGDI How? The closest one to me is Ever, and he's in Venezuela (probably). But sure, why not. As long as I don't get *pun* -ished by the mayor of pun city.
Australia to the Caribbean is also almost exactly half the world away (~20000km is almost half the circumference of Earth) which means the microphone may have also been helped by the lensing effect that happens at the antipodal point - waves that are divergent at one point on the surface of a sphere must converge at the far side of that point. Sound & seismic energy from Krakatoa's 1883 eruption were famously focused at a point in South America this way too.
I have been exploring antipodal seismic focusing as a means for detecting the impact of flight MH370 in the Indian Ocean. I find faint evidence for the effect in the mid-Atlantic AF447 accident. I've also spent quite some effort trying to use multipath SOFAR channel delays as virtual sound sources for triangulation. So, it's an intriguing question but I see two counterpoints. SOFAR channel sounds have little horizontal refraction. The effect is there, but mainly due to changes in water temperature. It's not a focusing effect, more like looking through a prism. The other point is that any focusing from multiple paths would cause the signal arrival to be smeared out over time. That also happens with the antipodal amplification of seismic signals, especially with multiple arrivals since the odds of finding a seismometer directly opposite the origin are small. The antipodal paths range from the major to minor arcs distances. For some reports on antipodal focusing for MH370, I invite you to search: 370Location.org
i was sonar operator in navy! submarines are use that slow layer for hide and listening surface ships sound well. we call it 'shadow zone' cuz while sounds wave suddenly drop down and bouncing up, it makes huge whole of undetectioning area
I think you might have them the wrong way around. Refraction is the one that bends waves and I think that'll be what's going on here, as there's nothing for the sound to actually reflect off.
The idea is that the sound refracts initially as it enters the SOFAR area but then when it reaches the boundary between the SOFAR and regular water at an angle beyond its “critical angle” (based on the refractive index of the different waters) it will totally internally reflect. This is important because TOTAL internal reflection means all of the energy of the sound wave is reflected, none of it makes it out. This is why the sound doesn’t lose much energy over the distance.
I truly believe almost everything can be studied better using the physics of water. Like the way those sound waves bounce off of the higher pressure water looks similar to the way water ripples hitting a solid wall.
NOTE: Radars and communication radios use a similar air-channel "mirage" effect called "ducting" (when present due to proper temperature/pressure conditions, especially in hot regions of the world) to channel and funnel the radio waves to greatly enhance the range the signals travel. If expected, this can be a major benefit, though if it happens when not expected, this can cause some problems with radio signals from a distance scrambling short-range signals. Expertise in such things is needed for proper operation of such devices in the real world...
Completely random fact: It takes a photon 200,000 years to travel from the core of the Sun to the surface, then just a little over 8 minutes from the Sun’s surface to your eyeball. -SciFacts
Is it total internal reflection? Not partial? And how much energy did the wave lose? Seeing that water is still a fluid, so there will be losses through motion at the borders right.
It's basically total internal reflection, for sound. Not so much different from optical fiber for light. I am kind of curious about how the frequency of sound wave affect this.
This may be a foolish question but why not just use thermometers to measure the changes in ocean temperature, rather than use sound speed as described in the last part of the video? There must be some kind of advantage I guess, so it made me wonder why is that the case
Theres a video here on youtube called the Sound Channel by Richard A. Muller, it was discovered and used in the cold war, watch the video for a great class about it.
Imagine when Krakatoa exploded, some of the sound waves got in the water and they then kept reverberating in the ocean for the next few months with great amplitude, while in the atmosphere it just circulated the Earth just seven times. Or the same with Tsar Bomba.
:O what other waves can travel in the SOFAR channel??? Can wifi for example? This opens up a pretty cool potential for a fantasy universe where instead of satellites, we used these channels for technology.
