Kandilli Observatory evaluated the earthquake in Izmir


Boğaziçi University Kandilli Observatory and Earthquake Research Institute Director Prof. Dr. Haluk Özener evaluated the earthquake off the Seferihisar district of Izmir, with a presentation at the press conference held at the Regional Earthquake and Tsunami Monitoring and Evaluation Center in Kandilli.

Özener stated that an earthquake with a moment magnitude of 6.9 occurred in the Aegean Sea off Seferihisar-Doğanbey at 14.51, according to their findings, and noted that the depth of the earthquake was about 10-12 kilometers and a shallow earthquake occurred.

Prof. Dr. Haluk Özener, expressing his condolences to the relatives of those who lost their lives in the earthquake, said, “According to first impressions, it was determined by us that a fault of approximately 30-40 kilometers had been broken. We are talking about a displacement of approximately 1.2 meters. There is a displacement of approximately 1.2 meters. Normal faulting earthquake. We recorded 21 earthquakes with magnitudes 2.8 to 4.9 in 1.5 hours after the earthquake in our center. Aftershocks are expected to last up to 15 days a week. Naturally, we can expect aftershocks up to about 5.8-6 degrees below one degree. ” he spoke.

Explaining that the Aegean Region, where the earthquake was experienced, is a highly seismically active region, and that there has been an intense earthquake activity in the mainland and the sea, Özener said that since 1912 there have been earthquakes of more than 6.5 magnitude, most recently in the Aegean Sea in 2017. He reminded that there was an earthquake of 6.6 magnitude in Turkey.

“Tsunami also occurred in today’s earthquake”

Özener emphasized that the earthquake activity was intense at the place where the earthquake occurred and continued as follows:

“The tsunami occurred after the 2017 Bodrum Gökova Gulf earthquake. We are not used to it in our country. It was also a small tsunami. Today, the tsunami also occurred. Kandilli Observatory and Earthquake Research Institute The service provider of the tsunami warning center in the Aegean, Mediterranean, Black Sea and connected seas.” 9 minutes after the earthquake, it sent a tsunami warning message to all member countries and to the Disaster and Emergency Presidency in our country. “

Explaining that the wave heights can be calculated after the tsunami and that a tsunami waves of 30-60 centimeters are predicted to occur in their studies in this direction, Özener said that instead of looking curiously after the earthquake that occurred in the sea, the citizens in the coastal regions should move away from the shore as quickly as possible, climb up to high places and go to safe areas. He said they should pass.

Stating that there is always the possibility of an earthquake of this magnitude in the Aegean Sea, Özener said, “There are many faults in the Izmir region, the Aegean region, the sea and these faults always have the potential to produce more than 6 earthquakes.” said.

Prof. Dr. Özener stated that there are many faults on land in the Aegean Region and that they are capable of generating earthquakes, and that after the 6.6 magnitude Bodrum-Kos earthquake in 2017, there were around 10 thousand aftershocks ranging from 1 to 5.5 in size. He noted that they recommend citizens to be vigilant at this point.

Özener warns citizens not to enter damaged buildings

Prof. Dr. Haluk Özener stated that aftershocks up to one degree below an earthquake of this magnitude, ie 5.8-5.9 magnitude, are normal and warned citizens not to enter damaged buildings, looking at AFAD’s warnings.

Expressing that it is natural for institutions related to earthquakes to give different magnitudes, Özener said, “It is the fault model they use, it is the depth structure. We use different parameters. The differences of 0.1-0.2 are very usual. The important thing is to know the location and the approximate size. The intensity of this earthquake. is also an earthquake of magnitude 7 around the epicenter. ” made its evaluation.

9 minutes after the earthquake, the tsunami warning message followed the aftershocks for 3 hours and according to the developments, “Tsunami danger has passed.” Explaining that they gave a new warning message, Özener emphasized the importance of staying away from the coasts in such earthquakes.

Prof. Dr. When asked that there are claims on social media that the earthquake was predicted in advance, “We scientists consider this as speculative. So far, there is no scientifically proven technique to predict, know and predict earthquakes.” said.

“Two very different fault lines”

“Has any activity been observed in the fault lines in the Istanbul region after the Izmir earthquake?” Özener said, “No, two very different fault lines. One is from the Aegean opening regime, one is from the northern branch of the North Anatolian fault. Very different structures. Both geography, faults and tectonic structure are different. The two are independent from each other.” he answered.

Özener stated that it is possible for very close faults to transfer stress to each other, that it is not possible to say anything scientifically about which fault can trigger which, and serious research is required.

Prof. Dr. Özener added that they have recorded 35 aftershocks, the largest of which is 4.9 magnitude so far.

“It is useful to be careful against aftershocks”

Boğaziçi University Kandilli Observatory Regional Earthquake and Tsunami Monitoring and Evaluation Center Director Dr. Doğan Kalafat stated that the aftershocks of the earthquake will continue for a long time and that their frequency and magnitude will decrease over time. Kalafat stated that citizens should be cautious and avoid damaged structures, as serious aftershocks may occur in the first 3-4 hours.

Boğaziçi University Kandilli Observatory Earthquake Research Institute Deputy Director Prof. Dr. Ali Pınar noted that there were 22 earthquakes larger than 6 in the region in the last century, the region was very active and there were many fault lines.

Stating that there is an increase in stress around the fault after the current earthquake in the region, Pınar said, “Therefore, since there are many large and small faults in the region, it causes an increase in tension especially in neighboring faults for a certain period of time and there may be aftershocks. Therefore, it is worth paying attention to these possibilities. there is.” used the expressions.


Source: Dünya Gazetesi by www.dunya.com.

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