Elçin Gök

Dokuz Eylul University | DEÜ · Department of Geophysics Engineering

Local and regional networks are needed to better examine the regions with complex tectonism, such as western Anatolia. Local seismic networks may provide critical data to both scientists and local authorities. They are also required as a base for future early warning systems which Izmir, the largest city in the western Anatolia, does not have one....

An attenuation relationship model belonging to a region with a high earthquake hazard is important. It is used for engineering studies to know how the peak ground acceleration (PGA) value depends on the distance where there are no stations. This study used earthquakes with magnitudes greater than 4 that IzmirNET recorded between 2009 and 2017 to de...

The aim of this study is to investigate the crust and upper mantle structure of Denizli province and its surroundings, which have high geothermal potential and earthquake activity. The study area, where destructive earthquakes have been observed in the historical process and which has high seismicity today, includes Upper Paleosoic-Precambrian meta...

A devastating earthquake with magnitude Mw = 7.2 occurred in the Van region, Eastern Turkey, on October 23, 2011. This study analyzes the characteristics of surface deformation before, during, and after the earthquake. The data from 300 × 300 km2 permanent GPS network are used to quantitatively estimate surface deformations in the epicentral zone o...

Bu çalışmada İzmir ve çevresinde meydana gelen depremlere ait sismik dalgaların frekans bağımlı soğurulmaları analiz edilmiştir. İzmirNET ağı tarafından kayıt edilen, 2008-2019 yılları arasında oluşmuş ve koda magnitüdü 2.3≤MC≤5.5 aralığında değişen 217 adet deprem kullanılmıştır. Sismik dalgaların soğurulma karakteristiği Koda Q ile belirlenmiştir...

17 Ağustos 1999, Mw=7.6 büyüklüğündeki Kocaeli depremi, Marmara Denizi içine uzanan Kuzey Anadolu Fayının büyük bir deprem üretme olasılığını ve Marmara Bölgesi için Deprem Riski ve Sismik Tehlike analizinin önemini ortaya çıkarmıştır. Çalışma alanında gelişen hareketlenmeye bağlı olarak oluşan depremler zaman zaman gerilmeyi değiştirmekte ve buna...

This study aims to reveal upper-crustal velocity structure of Inner part of Izmir Gulf by using ambient noise tomography. One-year noise data have been used from 17 stations belong to IzmirNET. Rayleigh wave group velocities which present good signal/noise ratio have been obtained from dispersion curves by using multiple filter technique. Results h...

This study reports the estimation of source parameters in and around Izmir, western Anatolia (Turkey), using data recorded by 18 strong motion stations belonging to the local accelerometer array (IzmirNET). The displacement spectra of SH waves are calculated for 55 earthquakes with a moment magnitude range (Mw) of 3.4 to 5.7 recorded by at least te...

This paper presents new models of the seismic velocity structure of Eastern Anatolia, Turkey. We applied a local earthquake tomography method to arrival time data produced by local and regional events in Eastern Anatolia to understand the three-dimensional seismic velocity and Vp/Vs models and their correlation with the geological evolution and tec...

The results of observations in a permanent GPS network with an area of about 300 × 300 km 2 were used to analyze deformations of the earth's surface around the Van earthquake in the time interval January 16, 2009-October 29, 2012 with a daily temporal resolution. Schemes of horizontal and vertical displacements, dilatation deformations and maximum...

ABSTRACT: The study area, Denizli province at Southwestern Turkey, is chosen because of its high geothermal potential. Furthermore, the region known as an even more seismically active area was affected by destructive historical earthquakes. Receiver function analysis was performed to study the crustal structure beneath Denizli. In addition to the e...

This study brings new insights to elucidate the three dimensional (3-D) seismic velocity structure of the Aegean region of Turkey by using Local Earthquake Tomography (LET). The study area has remarkable potential for geothermal resources. To provide the subsurface geological structure of seismogenic layers and geothermal areas, we develop new high...

ABSTRACT: The Denizli province has a complex tectonism in terms of geothermal potential as well as a basin characteristic. Denizli and its surroundings have been affected by destructive earthquakes in the historical time and today it has high seismic activity. Particularly in recent years, high seismic activity has been observed which starts from t...

In this study; determinated 3-D velocity structure by local earthquake tomography method for Izmir and surrounding area using IzmirNET earthquake arrival times. Prior to the determination of 3-D seismic velocity structure with local earthquake tomography method; it should be calculated 1-D Vp and Vs structure. Many velocity structures were created...

In this study; in order to calculate the local site effects, soil amplification was calculated for IzmirNET stations using SSR and HVSR method. The reference station was selected as BYR (on bedrock) for Standard Spectral Ratio (SSR). Selected five earthquakes were investigated with twenty-second window from the S-wave spectrum. The resulting values...

In this study, fault plane solutions and stress tensor studies were performed using IzmirNET data (30 earthquakes) which recorded between 2008 and 2012. When the fault plane results are analyzed, general trend will find normal faults. However, some results suggest that normal faults together with few strike slip mechanisms. a value which depend on...

In this study, main shock of 24 May 2014, Aegean Sea earthquake (M = 6.5) were examined and with the help of the SAC (Seismic Analysis Code) program, acceleration-velocity-displacement spectrum were analyzed by numerical integration. The main objective of this study is to introduce basic data processing steps in seismology using IzmirNET data. It h...

Izmir metropolitan area is one of the biggest cities of Turkey in terms of population and industrial density. Amount of recordings and quality of located events increased since the new local seismic array, IzmirNET, was installed in 2008. Present study addresses to elucidate seismotectonics of Izmir vicinity by a new data set and reveal first resul...

Izmir where is located at the western part of Turkey, is the third biggest country in terms of population (with more than 4 million inhabitants) and industrial densities. Standard spectral ratio from earthquake recordings (SSR) and Horizontal to Vertical Spectral Ratio (HVSR) are considered to investigate site effects as a function of frequency. Th...

We have performed aftershocks analysis triggered by 24.05.2014 (Mw=6.5) Gokceada Island (GI) earthquake where occurred at the W of North Anatolian Fault zone. Mainshock was widely felt in Aegean and Marmara regions of Turkey. Major damage in 228 homes was reported. Other 49 residences suffered moderate or light damage. We have well located 699 even...

This study concerns the results with obtained from IzmirNET local strong-motion network installed in Izmir metropolitan city. 16 strong-motion stations perform four main geological units. The aim of the project Polat et al. (2009) was using with the strong ground motion data to find out the propagation and site characteristics of Quaternary sedimen...

Bu çalışma kapsamında, İzmir İl'inin ilk sismik ağı (İzmirNET) tarafından kaydedilen depremlerin lokasyonu yapılmıştır. Depremler, genelde yerkabuğunun ilk 20 km'sinde yoğunlaşmaktadır ve büyüklükleri 1.0≤ML≤4.0 arasındadır. Deprem etkinliğinin; Güzelbahçe'nin güneyinde, Narlıdere-Balçova çevresinde, Manavkuyu-Bornova civarında, Gaziemir-Buca h...

We present a site effect study for the city of Izmir, Western Anatolia, Turkey. Local amplification was evaluated using state-of-practice tools. Ten earthquakes recorded at 16 sites were analysed using spectral ratios relative to a reference site, horizontal-to-vertical spectral ratios, and an inversion scheme of the Fourier amplitude spectra of th...

A temporary earthquake station network of 11 seismological recorders was operated in the Bursa region, south of the Marmara Sea in the northwest of Turkey, which is located at the southern strand of the North Anatolian Fault Zone (NAFZ). We located 384 earthquakes out of a total of 582 recorded events that span the study area between 28.50–30.00°E...

A 16-station strong-motion seismic monitoring network covering metropolitan Izmir and the surrounding region was established in July 2008. The seismic network was installed as a cooperative effort involving the Earthquake Research and Implementation Center (ERIC-DAUM) of Dokuz Eylul University (DEU, Izmir), the Earthquake Research Department (ERD)...

West Turkey, one of the most seismically active regions of Turkey, has been analysed to reveal seismic hazard by using fractal behaviour, seismic quiescence z- and Gutenberg-Richter b-parameters. Starting from raw earthquake catalogue, we performed completeness analysis on recorded events, and a final catalogue, could be accepted as homogeneous, wa...