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Journal

2008

Western Anatolia

Articles 1 - 3 of 3

Full-Text Articles in Physical Sciences and Mathematics

Statistical Earthquake Frequency Analysis For Western Anatolia, Esi̇n Fi̇ruzan Jan 2008

Statistical Earthquake Frequency Analysis For Western Anatolia, Esi̇n Fi̇ruzan

Turkish Journal of Earth Sciences

In order to apply a statistical earthquake frequency analysis to western Anatolia, the area has been restricted within coordinates 36.50º-40º North and 26.00º-30.00º East. Data used in the analysis belong to the instrumental period from 1.1.1900 to 10.11.2006 (Ms ≥ 4.0). The earthquake record was assumed to be representative of longer periods and the possibility of clusters of seismicity or of extreme magnitude events were ignored. The study area has been divided into eight zones with different seismotectonic properties. All computations have been performed for these zones separately. The earthquake magnitude series is termed as the instantaneous peak over the …


Isostatic Compensation In Western Anatolia With Estimate Of The Effective Elastic Thickness, Oya Pamukçu, Ayça Yurdakul Jan 2008

Isostatic Compensation In Western Anatolia With Estimate Of The Effective Elastic Thickness, Oya Pamukçu, Ayça Yurdakul

Turkish Journal of Earth Sciences

Isostasy is concerned with how the crust and mantle adjusts to shifting loads of limited spatial and temporal dimensions. By analysing the frequency content of gravity and topography data, it has been possible to determine the compensation scheme of a region. In this study, the compensation mechanism of the Western Anatolia, which has dynamic loads, was investigated by isostatic response functions. Effective elastic thickness in Western Anatolia region was estimated based on admittance and coherence between gravity and topography data. The two most reliable indicators of lithospheric strength are the focal depth distribution of earthquakes and relation of gravity anomalies …


A First Record Of A Strike-Slip Basin In Western Anatolia And Its Tectonic Implication: The Cumaovası Basin, Bora Uzel, Hasan Sözbi̇li̇r Jan 2008

A First Record Of A Strike-Slip Basin In Western Anatolia And Its Tectonic Implication: The Cumaovası Basin, Bora Uzel, Hasan Sözbi̇li̇r

Turkish Journal of Earth Sciences

The Cumaovası basin, formerly known as the Çubukludağ Graben, is located at the western end of Gediz and Küçük Menderes grabens in the west Anatolian extensional province. It is 5-17-km wide and 35-km-long, NNE-SSW-trending, asymmetric basin that was formed under the control of strike-slip and oblique-slip normal faults. The basin contains two different infills that are separated by an angular unconformity: (1) an ancient basin fill consisting of Lower Miocene-Lower Pliocene sequences which accumulated in a fluvio-lacustrine depositional setting, and deformed by NE-SW-trending strike-slip faulting; and (2) a modern basin fill consisting of Plio-Quaternary units that are controlled by synchronous …