Istanbul earthquake report from Kandilli Observatory

Following the 6.2 magnitude earthquake that struck Istanbul on April 23, the Boğaziçi University Kandilli Observatory and Earthquake Research Institute published a report titled "Marmara Sea Earthquake Information Note." The report announced that 445 aftershocks had been recorded in the region following the earthquake.

TWO MAJOR AFTERSHOCKS OCCURRED

According to the Kandilli Observatory report, two significant aftershocks with a magnitude of 5.2 occurred in the region following the initial major earthquake. The intensity of the aftershocks was observed particularly in a 15-20 kilometer area between the Central Marmara and Kumburgaz segments.

The report stated that the earthquake was felt strongly in the Marmara Region as well as in surrounding provinces, noting that the instrumental intensity value reached MMI 8 at the epicenter and level V in residential areas.

Kandilli Observatory indicated that the acceleration records captured during the earthquake were examined and that the spectral acceleration values to which structures were exposed remained well below the design spectrum used as a basis in earthquake regulations. This situation was evaluated as an indication that structures generally sustained less damage.

TSUNAMI WARNING ISSUED AND LIFTED

It was announced that a tsunami warning message was sent to AFAD in our country and to other countries in the region that are members of the system six minutes after the earthquake. While the warning was confirmed through observations, it was reported that the tsunami danger had passed as of 16:53, and the warning was officially terminated.

AFTERSHOCKS WILL CONTINUE

Kandilli Observatory warned that aftershocks will continue in the region for some time. It was underscored that people should stay away from buildings identified as risky.