I love Arches National Park, great hikes and fabulous geology. Now to learn that it sings, wow.
Well, it's more like they forgot the words and are just humming.
The voice of Utah's arches – Ambient seismic vibration sped up 25x
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Re: The voice of Utah's arches – Ambient seismic vibration sped up 25x
#12I worked on a seismic monitoring system for civil engineering structures. We recorded data at 200 Hz (though all the interesting content is in the zero to 15 Hz range). Once I tried this experiment with some of the data from a bridge in a harbor. It was very cool, you could hear so much going on in the bridge.
Ambient seismic vibration is something of a hidden world around use. With a very sensitive accelerometer you can measure the shaking in a concrete pad due to cars a block a way. Looking in the frequency domain things like when rush hour is and which day is the weekend pop out like a sore thumb.
Re: The voice of Utah's arches – Ambient seismic vibration sped up 25x
#13The first arch [0] has a note that says: > this feature and the sounds of its vibration are sacred to Native American Tribes of the four corners region, and they ask that you listen and share with according respect. Does anyone happen to know if this means they were actually hearing these vibrations in some way? (Only 25 times slower and less audible) [0] https://geohazards.earth.utah.edu/tones/RainbowBridge.html
When you visit this arch, there are many signs telling you to treat it with respect as the natives do. They probably just got permission from the tribe to do the recording with the caveat that they treat the arch with similar respect.
It's an incredible arch, but one of the harder ones to get to.
Re: The voice of Utah's arches – Ambient seismic vibration sped up 25x
#14going to utah for pycon. this got me stoked up on it
Depending on the time of year you go, make sure you get a reservation: https://www.nps.gov/arch/planyourvisit/permitsandreservation...
Re: The voice of Utah's arches – Ambient seismic vibration sped up 25x
#15I worked on a seismic monitoring system for civil engineering structures. We recorded data at 200 Hz (though all the interesting content is in the zero to 15 Hz range). Once I tried this experiment with some of the data from a bridge in a harbor. It was very cool, you could hear so much going on in the bridge. Ambient seismic vibration is something of a hidden world around use. With a very sensitive accelerometer you…
In between the acceptance of electronic intelligence and the dawn of everything being computer based, spooks spent a lot of time inventing ways to get this kind of info from dumb sensor data.
At one point MI5 could apparently lift crypto keys from the noise of the cipher machine through a wall. Obviously being MI5 this was to spy on the French and not the Russians, but still.
Re: The voice of Utah's arches – Ambient seismic vibration sped up 25x
#16going to utah for pycon. this got me stoked up on it
Just a note. Arches is a good 4 hour drive from Salt Lake City.
(Not to try and discourage your visit. I'm from Utah and I've often thought of trying to arrange some sort of Python/Data desert or ski outing.)
Re: The voice of Utah's arches – Ambient seismic vibration sped up 25x
#17 Song of Sand by Suzanne Vega
If sand waves were sound waves
What song would be in the air now
What stinging tune
Could split this endless noon
And make the sky swell with rain
If war were a game that a man or a child
Could think of winning
What kind of rule
Can overthrow a fool
And leave the land with no stain
https://www.youtube.com/watch?v=KzNyao--tuYRe: The voice of Utah's arches – Ambient seismic vibration sped up 25x
#18For more Utah arch vibration content, check out Prof. Jeff Moore's twitter feed @UtahGeohaz (Jeff is in the same department as the link).
Here's some very cool visualizations showing exaggerated vibrations of natural wonders:
https://twitter.com/UtahGeohaz/status/1451218202621399043 (Colonnade Arch) https://twitter.com/UtahGeohaz/status/1473692964216057865 (The Matterhorn) https://twitter.com/UtahGeohaz/status/1473692964216057865 (not sure which arch)
Re: The voice of Utah's arches – Ambient seismic vibration sped up 25x
#19This is wonderful! I can't help but to be reminded of the book (and excellent movie) The Hunt For Red October, where a [edit] "caterpillar" drive on The Red October sounds like seismic activity, but when sped up is clearly mechanical. This is not he same, I know, but it has the same vibe. https://geohazards.earth.utah.edu/tones/BigArrowhead.html has a distinctly underwater sound to it. Whoever thought to do this... K…
Yes! That's exactly what came to my mind!
minor nit: Red October had caterpillar drive
Re: The voice of Utah's arches – Ambient seismic vibration sped up 25x
#20The first arch [0] has a note that says: > this feature and the sounds of its vibration are sacred to Native American Tribes of the four corners region, and they ask that you listen and share with according respect. Does anyone happen to know if this means they were actually hearing these vibrations in some way? (Only 25 times slower and less audible) [0] https://geohazards.earth.utah.edu/tones/RainbowBridge.html
There were the lunkheads a few years back to pushed over a rock formation at another Utah park so as obvious as showing respect might seem, adding a reminder might get a few more people into the proper state of mind instead of thinking they're at Disneyland.