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First video of an earthquake fault cracking has revealed another surprise (www.livescience.com)

submitted 2 days ago by throws_lemy@lemmy.nz to c/earthscience@mander.xyz

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A first-of-its-kind video showing the ground cracking during a major earthquake is even more remarkable than previously thought. It not only captures a ground motion never caught on video before but also shows the crack curving as it moves.

This curvy movement has been inferred from the geological record and from "slickenlines" — scrape marks on the sides of faults — but it had never been seen in action, geophysicist Jesse Kearse, a postdoctoral researcher currently at Kyoto University in Japan, said in a statement.

"Instead of things moving straight across the video screen, they moved along a curved path that has a convexity downwards, which instantly started bells ringing in my head," Kearse said, "because some of my previous research has been specifically on curvature of fault slip, but from the geological record."

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[-] Orangger@lemmy.zip 10 points 1 day ago* (last edited 1 day ago)

That is called avulsion, and means you still own that property that moved 6 feet away. This is the USA, but I'm certain it is similar in many places of the world.

It gets real crazy in floods where a big chuck of property can break off and float downstream. If you can find it later that property is still owned by you, just in a new location.

[-] Obi@sopuli.xyz 3 points 1 day ago

So you're saying I should find a dirt cheap property that's uphill from a coast, and cross my fingers a flood will carry it over to become beach-front and quadruple its value?

[-] SkyezOpen@lemmy.world 3 points 1 day ago

Either that, or rising waters will turn it into beachfront property in 10-15 years anyway. You can't lose!

this post was submitted on 19 Jul 2025

132 points (99.3% liked)

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