Details

Autor(en) / Beteiligte

• ÇIrmik, Ayça

Titel

Determining the Deformations in Western Anatolia with GPS and Gravity Measurements

Ort / Verlag

ProQuest Dissertations & Theses

Erscheinungsjahr

2014

Quelle

ProQuest Dissertations & Theses A&I

Beschreibungen/Notizen

• Western Anatolia is one of the most seismically active and rapidly extending regions in the world and is currently experiencing an approximately N–S continental extension. Due to this important case of Western Anatolia, deformations of the region were examined by GPS and gravity measurement in this study.Firstly, the GPS stations of TURDEP poject, CORS-TR Project and General Command of Mapping were processed relative to Eurasia fixed frame and the velocities of the stations were found as approximately 20-25 mm per year. Besides, the Anatolian Block and Aegean block solutions the velocity magnitudes were obtained between approximately 3-15 mm per year. As second step, the GPS and microgravity data, which were obtained simultaneously at 6 points; Akhisar (Manisa), Eşme (Uşak), Çal (Denizli), Bademli (İzmir), Borlu (Manisa), Karacasu (Aydın), were compared for discussing about vertical mass changes on the measurement points. As third step, obtained GPS velocities by using GAMITGLOBK software were compared with the modeled GPS velocities by Coulomb 3.3 software on the northern normal fault of Gediz graben and southern normal fault of the Büyük Menderes graben by using Coulomb 3.3 software and coulomb stress changes were obtained for these faults and compared with earthquakes. As the last step, the numerical models were created by using finite elements for determining the deformation of Western Anatolia during the geological time scales.As a result, all the results were compared with the previous geophysical and geological studies and earthquake focus depth distributions.