Breaking news... The 3.5 magnitude earthquake in Yalova was also felt in Istanbul! 'Big earthquake' comment from Şener Üşümezsoy

According to the Disaster and Emergency Management Presidency (AFAD) data, a 3.5 magnitude earthquake occurred in the Marmara Sea, off the coast of Yalova, on Saturday, October 10, at 22:08. The tremor, which was recorded at a depth of 7.96 kilometers underground, was felt in the surrounding provinces, especially in Istanbul. After the earthquake, discussions about fault activity in the Marmara region came to the fore again.

"ISLANDS FAULT IS DEAD"

Evaluating the earthquake, Prof. Dr. Şener Üşümezsoy claimed that the earthquake did not occur on the Adalar Fault, which is discussed in public. Üşümezsoy stated that the earthquake took place in the secondary fault branches, where tension was transferred after the 1999 Gölcük Earthquake, and drew attention with the words "Adalar Fault is dead".

Prof. Dr. Şener Üşümezsoy's statements are as follows;

This earthquake, which occurred off the coast of Yalova, was an earthquake that occurred on the fault line that broke in 1894 and the fault line that broke in 1999, and on the branches of these faults. In other words, when it happened near the Islands, it was the earthquake that was said to have activated the Islands Fault. In fact, the Adalar Fault is dead. This earthquake occurred in the second branches that cut it in the north direction and go north. That's why it was said to be on the Islands Fault.

"NO BIG EARTHQUAKE WILL RESULT FROM THIS EARTHQUAKE"

This is an earthquake that occurred in the second branches heading north from the Yalova-Çınarcık coast. These are earthquakes on faults where the 1999 earthquake was now late sound and stressed. So there won't be a big earthquake from here. In an area of ​​approximately one square kilometer, a rupture indicates a rupture in a fault plane as large as an acre.

"THE POINT I EMPHASIZE WHEN IT IS SAID THAT THERE IS AN EARTHQUAKE ON THE ISLANDS FAIL"

What I emphasize when it is said that an earthquake occurs in the Adalar Fault in summer is the earthquake that occurs in the second branches heading north from the Yalova-Çınaraltı coast. It is its tip. Now, the earthquakes that occurred in the southern part of that earthquake are the earthquakes created by the remaining stresses in the side branches that are oblique to it since the main branch broke in 1999 and released its stress. The reason why this northward fault is felt on the north coast is that it is felt in that region because the direction of the fault is towards the north. This will not create a major earthquake. The magnitude 5 earthquakes we mentioned may occur at most.

"THERE IS NOT A FAULT GOING TOWARDS THE ISLANDS"

As we see on the map, the NAF border passes along the Yalova-Çınarcık coast. This is the fault we call the North Anatolian Fault. I showed it above with dashes or thin lines. It shows entirely speculated faults that have not existed since 1999. The place where this earthquake occurred is the extension of the North Anatolian Fault, which we call the plate boundary, which goes straight around the Yalova-Çanakkale coast, within the Sea of ​​Marmara. There is no fault going towards the Islands.

"THE REASON IT IS FELT IN TUZLA AND ATAŞEHİR"

The reason why it was felt especially in the eastern part of the Anatolian coast of Istanbul, in areas such as Ataşehir and Tuzla, is that one group of faults oblique to the main fault in Yalova goes towards Tuzla, while the other group forms the fault system extending westwards towards Bakırköy. For this reason, even though it was a quad earthquake, it was felt on this coast because it was located in the section extending towards Tuzla.

"PEOPLE APPROACH EVERY INCIDENT TOO SENSITIVELY"

It has been felt, but as I said, every event is approached extremely sensitively because people have the belief that there will be a major earthquake on the Islands Fault. However, there is no such fault. This is an earthquake that occurred in the sections oblique to the main fault of the North Anatolian Fault passing in front of the Yalova-Çınarcık coast, on the secondary branches, which we call P and R parallels, P bent towards the east, R parallels bent towards the west. These branches do not cause a significant earthquake on their own. These are the result of the triggers created in these branches by the stress that emerged in 1999.