The Kahramanmaraş earthquakes on February 6, 2023, with magnitudes of 7.7 and 7.6, are considered the century's worst disaster in Türkiye. It was shown by these two main shocks that the East Anatolian Fault Zone not only often causes destructive earthquakes but also has a focus depth that is only about 10 km deep in the upper crust. The strength of the upper crust plays a crucial role in influencing the structures and fault zo...