a couple of months ago, Petpixel A notable security camera video was reported that recorded The first view of the surface of the earth With a major defect line during a large earthquake. But further resrach has revealed that it shows even more than that.
Scientists released to study the real video footage have now found that it also provides the first direct visual evidence of a winding mistake slip, an observation that was earlier estimated only by geological characteristics.
The footage recorded by a CCTV camera with a Saging Fault during the 7.7 earthquake on 28 March reflects the land slipping north on the western side of the mistake. It was posted on YouTube shortly after the incident and attracted the attention of JC Kirsa, a postdotoral researcher at the University of Kyoto.
“I looked at youtube after one or two hours of uploading it, and it sent my spine straight to cool,” Kerase Says PHys.org“It shows something that I think every earthquake is desperate to see scientists, and it was there, so it’s very exciting.”
While the dramatic footage initially impressed the researchers only to capture the active mistake slip, it was on the latter ideas that Kearse saw something more important.
He says, “Instead of the things moving directly on the video screen, they went on a curved path, with a convex at the bottom, which immediately started ringing the bell in my head.” “Because some of my previous research has been especially on the curvature of mistake slip, but from geological records.”
The curved speed with defects was first suggested based on features such as the slicanline – scrap marks released by the previous seismic activity – but in real time was never visually documented. Working with a colleague at the University of Kyoto, Kerase made a detailed analysis of footage using Pixel cross-co-operative techniques. By tracking the object movement frame by the frame, they measured the breakdown rate and path.
His analysis found that the mistake slipped 2.5 meters (about 8.2 ft) in 1.3 seconds, which reached the peak velocity of 3.2 m per second (10.5 feet per second). The slip began with a sharp curve, as it was before straight. This behavior suggests that the dynamic tension near the Earth’s surface is lower than the deep people in the crust, affecting the path of breakdown.
“The curvature has important information about the dynamics of breaking,” says Kearse. Conclusions suggest that these transient stress breaks down before it breaks down in the beginning. He says, “These transient stresses initially push the mistake from their intended course, and then it catchs itself and does what he should do, after that,” they say.
Research was published On 18 July Earthquake records.
