When experts analyzed a magnitude 7-class earthquake that occurred in southeastern Turkey, it was found that faults extending in different directions were moving one after another. need to be careful,” he said.
Yuji Yagi, a professor at the University of Tsukuba, analyzed the movement of faults in the major earthquake in southeastern Turkey based on seismometer data observed around the world.
According to Professor Yagi, there are two faults in the focal region of this earthquake that intersect like the letter V turned sideways.
Of these, the first earthquake occurred in the East Anatolian Fault Zone, which extends from the southwest to the northeast.
A magnitude 7.8 earthquake struck just after 10:00 a.m. on the 6th of Japan time.
At this time, the analysis results revealed that the rupture of the underground bedrock spread in the northeast direction over a period of about 1 minute, and it appeared to have shifted significantly over a length of about 50 kilometers and about 10 meters.
About nine hours later, a magnitude 7.5 earthquake occurred on the east-west fault about 100 kilometers north of the epicenter of the first major quake.
This fault is also believed to have slipped for about 10 meters, about 40 kilometers long.
The angle between the two faults is about 30 degrees, and Professor Yagi points out that it is rare for large-scale earthquakes to occur one after another in a short period of time in a fault zone lined up at such an acute angle.
Professor Yuji Yagi of the University of Tsukuba
said, "It's common for another earthquake to occur on the extension of a fault, but it's extremely rare for an earthquake to continue for a short time on a fault that intersects at an acute angle. There are other complex faults in the southeastern part of Turkey. There is a possibility that all the energy is not released in a single earthquake.We need to be careful about future activities."