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CCTV footage captures video of an earthquake fault in motion

smithsonianmag.com

21–30 of 93 posts

Re: CCTV footage captures video of an earthquake fault in motion

#21
post #13
post #12

So many autoplaying videos on the page, and none of them are the video that the article is about.

This is the original video, for those looking: https://m.youtube.com/watch?v=77ubC4bcgRM

And here’s the related paper: https://pubs.geoscienceworld.org/ssa/tsr/article/5/3/281/659...

Re: CCTV footage captures video of an earthquake fault in motion

#22
It is remarkable how widespread of CCTV has helped in that field. Imagine being a scientist and never actually experience or see the earthquake you are into researching. That be like going to place where they are common and then sit a year or so and anticipating. Is it coming? Should be any time soon? Then when it happens you are in the toilet and have seen nothing apart from painting falling off the wall.

Re: CCTV footage captures video of an earthquake fault in motion

#23

It is remarkable how widespread of CCTV has helped in that field. Imagine being a scientist and never actually experience or see the earthquake you are into researching. That be like going to place where they are common and then sit a year or so and anticipating. Is it coming? Should be any time soon? Then when it happens you are in the toilet and have seen nothing apart from painting falling off the wall.

How about waiting over a decade and be getting a drink when it happens? Then waiting another decade and a technical problem preventing it from having been recorded.

https://en.wikipedia.org/wiki/Pitch_drop_experiment#Universi...

Re: CCTV footage captures video of an earthquake fault in motion

#25

Terrifying. I program automated vibration analysis for blasting, and a very powerful explosive blast will feature particle velocities (the direct corollary for power) in the single-digit in/s range (~0.02-0.13 m/s) . This peak particle velocity is 20-150x higher than the peaks we see from the most powerful blasts we measure, if they're at all qualitatively comparable. And of course, the earthquake energy source is ma…

in/s? Inches per second, or something else? One inch per second is the speed of an excited snail.

Must be inches per second because 1–10 of those is 0.025–0.25 m/s so that matches the parentheses

Re: CCTV footage captures video of an earthquake fault in motion

#26

How does property/real estate ownership work in this case? Seeing the land shift so clearly by several feet makes me wonder. What was on your property is now on my property!

By the discussions I've had with surveyors in my country (Sweden), any coordinate descriptions of properties are deferred to the physical markers in the ground (cairns for older property, metal stakes for newer ones). This would only be an issue in properties that have never been surveyed (and marked) at all.

Straight borders might become crooked if they cross the crack though.

Re: CCTV footage captures video of an earthquake fault in motion

#28

How does property/real estate ownership work in this case? Seeing the land shift so clearly by several feet makes me wonder. What was on your property is now on my property!

By the discussions I've had with surveyors in my country (Sweden), any coordinate descriptions of properties are deferred to the physical markers in the ground (cairns for older property, metal stakes for newer ones). This would only be an issue in properties that have never been surveyed (and marked) at all. Straight borders might become crooked if they cross the crack though.

It sure would suck to lose half your property to the earth suddenly saying screw you.

Re: CCTV footage captures video of an earthquake fault in motion

#30
post #28

Earlier quoted context omitted.

By the discussions I've had with surveyors in my country (Sweden), any coordinate descriptions of properties are deferred to the physical markers in the ground (cairns for older property, metal stakes for newer ones). This would only be an issue in properties that have never been surveyed (and marked) at all. Straight borders might become crooked if they cross the crack though.

It sure would suck to lose half your property to the earth suddenly saying screw you.

You could lose all your property, without compensation too, if your unlucky enough to have a big enough meteorite crash into it.
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