Page 201 - Çevre Şehir İklim İngilizce - Sayı 4

İrşade Aydoğdu Gürbüz - Banu Aslan

Introduction

There are three major fault lines in Türkiye including North Anatolian Fault
Zone (KAFZ), Eastern Anatolian Fault Zone (DAFZ) and Western Anatolian Fault
Zone (BAFZ); and “Earthquake Hazard Map of Türkiye” has been prepared in
the scope of National Earthquake Research Program (UDAP), published in the
Official Gazette dated 18 March 2018 and entered into force on 1 January 2019
(AFAD, www. afad.gov.tr).
According to Disaster and Emergency Management Presidency data, an
earthquake occurred with the moment magnitude Mw7.7 and at the depth
of 8.6 km in Pazarcık District of Kahramanmaraş Province located on Eastern
Anatolian Fault Zone at 04.17 on 06.02.2023 lasted about 100-120 seconds. The
initial determinations indicate that at least three different segments with a
length of about 300-350 km were ruptured by this earthquake (USGS NEIC
2023). According to the data of the Disaster and Emergency Management
Presidency, 9 hours after the first earthquake, another earthquake with a
moment magnitude of Mw7.6 and a focal depth of about 7 km occurred at
13:24 on the same day, centered in the Ekinözü District of Kahramanmaraş
Province. In this second earthquake, the fault rupture reached at a length of
about 170 km (“AFAD”, 2023).

Figure 1: 06.02.2023 Pazarcık (Kahramanmaras) Mw 7.7 and Elbistan (Kahramanmaras) Mw
7.6 earthquakes and aftershock activity (AFAD, www.afad.gov.tr ).

190 The Journal of Environment, Urban and Climate