One of the strongest earthquakes to hit the region in a century occured on Monday 6th of February 2023 at around 4 a.m., sending tremors as far away as Lebanon, Cyprus and Israel.

According to the United States Geological Survey (USGS), the epicenter of the 7.8-magnitude quake was 23 kilometers (14.2 miles) east of Nurdagi, in Turkey’s Gaziantep province, at a depth of 24.1 kilometers (14.9 miles). A series of aftershocks have reverberated throughout the day. The largest, a major quake that measured 7.5 in magnitude, struck in Turkey, according to the USGS about nine hours after the initial quake. That aftershock hit around 95 kilometers (59 miles) north of the original.

SeismoSoft team passed one of the largest recordings to SeismoSignal and the findings were astonishing.

  • PGA>0.7g
  • Spectral Acceleration>2g

You can find several recordings like the one from Turkey Accelerometric Database and Analysis System.


* Earlier version of this post, stated record PGA and Spectral Acceleration based on official recordings that had errors and were corrected in the mean time.

Our scientific partners, inspired of the disastrous earthquake, wrote a Seismic Retrofit case study with different strengthening solutions on existing Reinforced Concrete buildings.

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