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The Earth Is Pulsating Every 26 Seconds, and Seismologists Don't Agree Why

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Re: The Earth Is Pulsating Every 26 Seconds, and Seismologists Don't Agree Why

#61

Post by jusssi »

aaron695 wrote: post #30
jusssi wrote: post #23

Earlier quoted context omitted.

> (Don't confuse this with the world wide paranormal hum people claim to hear) Taking this sort of random swipe at at people who experience this is kind of rude. Even though it's pretty much confirmed it's not a real audio signal coming from outside of a person's body, there isn't quite enough evidence it isn't a real auditory sensation for these people (instead of psychological or "paranormal" issue). I do get the h…

> Taking this sort of random swipe at at people who experience this is kind of rude. > Even though it's pretty much confirmed it's not a real audio signal coming from outside of a person's body Why would you not think you have the well documented medical condition Tinnitus? "The Hum" is "a real audio signal coming from outside of a person's body", except it's not real. (And the first Google result for "The Hum" is th…

For me the first google result the Wikipedia page (https://en.wikipedia.org/wiki/The_Hum) which offers several explanations, including actual measurable man-made external sources, a type of tinnitus, and some more rare or speculative circumstances.

My understanding is that hum-like low-frequency tinnitus is not all that well documented. Feel free to provide links to sources to prove me wrong.

Re: The Earth Is Pulsating Every 26 Seconds, and Seismologists Don't Agree Why

#64

Post by jjoonathan »

alex_duf wrote: post #43

Funnily enough, it's also close to the 0,0 GPS coordinates https://www.google.co.uk/maps/place/0°00'00.0"N+0°00'00.0"E

Wasn't the infamous natural nuclear reactor near 0,0? A seam of fissionable minerals that millions of years ago would periodically fill with water, heat up, boil it off, cool down, rinse, repeat -- and that sounds an awful lot like what's happening here.

EDIT: It was at -1.5780591, 13.

Re: The Earth Is Pulsating Every 26 Seconds, and Seismologists Don't Agree Why

#66

Post by hugey010 »

pa7x1 wrote: post #27
hugey010 wrote: post #16

Never heard of this, so I had to do some digging. My money is on this being an ocean wave phenomenon. The Gulf of Guinea, specifically the Bight of Bonny, is up to ~20,000ft deep. Average ocean waves have a period less than 15s and the average ocean depth of the Atlantic is ~11,000ft. Oddly similar ratios! So it's plausible this 26s wave period is caused by the increase in depth [0]. The abnormally large seismic ampl…

Wave-depth and period are related, waves of 15s or even 26 are much too shallow to be affected by the seabed at those depths. EDIT: Some back of the envelope physics to see how plausible your hypothesis is: For deep water waves: wave_speed = gravity * wave_period / 2pi wave_speed (26 sec period) = 40.56 m/s wave_speed = wavelength / period => wavelength = 1054 m = 3458 ft. The effect of the seabed (i.e. shallow water…

Thanks, you're probably right that it's not only depth being a factor in this. I think we both over-simplified as these are logarithmic ratios, not linear.

On to speculation: the interaction between the waves and the ocean floor may be hitting one, of many, of these magic numbers in this scenario. It's possible two periods of waves interact to cause this 26s interval, since waves are always grouped. Also, consider how the waves may have combinatorial feedback loops due to stokes drift (doppler effect) in deeper water.

It's frustrating the latest research on microeism seems to be from the 50's. There's very few resources describing what happens to waves as they move from shallow to deeper water.

Re: The Earth Is Pulsating Every 26 Seconds, and Seismologists Don't Agree Why

#67

Post by Chris2048 »

alex_duf wrote: post #43

Funnily enough, it's also close to the 0,0 GPS coordinates https://www.google.co.uk/maps/place/0°00'00.0"N+0°00'00.0"E

Also funny that the island near it happens to be "São Tomé and Príncipe" which I got familiar with only this month b/c the non-ascii chars caused an issue at work.

Re: The Earth Is Pulsating Every 26 Seconds, and Seismologists Don't Agree Why

#68

Post by hugey010 »

mucsun wrote: post #22
hugey010 wrote: post #16

Never heard of this, so I had to do some digging. My money is on this being an ocean wave phenomenon. The Gulf of Guinea, specifically the Bight of Bonny, is up to ~20,000ft deep. Average ocean waves have a period less than 15s and the average ocean depth of the Atlantic is ~11,000ft. Oddly similar ratios! So it's plausible this 26s wave period is caused by the increase in depth [0]. The abnormally large seismic ampl…

Never heard of this either, but I don't agree with your theory, as waves usually form only superficial on the ocean.

This is an unusual measurement which is unexplained by current models. This chart [0] helps show why and when waves are not superficial to only surface of the ocean.

[0] https://en.wikipedia.org/wiki/Microseism#/media/File:Interfe...

Re: The Earth Is Pulsating Every 26 Seconds, and Seismologists Don't Agree Why

#70

Post by rcxdude »

abhinai wrote: post #5

Why haven’t I heard about this before? This seems too important a detail for my school textbooks to have left out and for popular culture to lack any references to it whatsoever. What am I missing?

Why do you think that it's important? Basically any kind of long term signal recording will turn up a multitude of patterns and signals with unclear source, some easier to explain than others. Seismometry has many of them, but this seems far too niche for any general textbook to care about.
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