Özet:

The Akşehir-Simav Fay System (ASFS) is located in the western Anadolu extension area and is one of the most important seismogenic generations. There are many horst and graben-type structures due to the normal figh segments that are shaped in the system. In the framework of this study, a 27-point GNSS network was established in the Afyon-Akşehir Grabeni (AAG) section of ASFS and 5 campaign GNSS measurements were carried out between 2012-2018 years. The obtained data were evaluated by the GAMIT/GLOBK software and the fixed speeds of the Eurasia board of all points were calculated. Using the speed field, the GEODSUIT software is calculated the area shrinking areas (strain) and the results are compared to the b parameters calculated using earthquake data. The findings found that after the 2002 Tea-Eber earthquakes, geodetic landslides increased to the west of the region.

Anahtar Kelimeler:

Özet:

Akşehir-Simav Fault System (ASFS) is one of the most important seismojenic zones in the Western Anatolia Extensional Zone. Because of oblique-slip normal fault segments, it contains many parallel horst and graben type structures. This study was carried out with GNSS measurements obtained from 27 GNSS points established in the Afyon-Akşehir Graben (AAG) part of ASFS. GNSS measurements were carried out as 5 campaigns between 2012 and 2018. As a result of the evaluation of the GNSS data using GAMIT/GLOBK software, the velocity vectors fixed to Eurasian plate of the sites were calculated. The strain rates computed with GEODSUIT software, and the b parameters calculated using earthquake data. Based on the comparisons of the strain rates and b parameters, the study results show that after the 2002 Çay Eber earthquakes, the geodetic strains increased towards the west of the region.