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    GEOPHYSICAL INVESTIGATION OF BURIED CANNONS IN KUMKALE (DARDANELLES), TURKEY
    (Univ Agean, Dept Mediterranean Stud, 2014) Buyuksarac, A.; Sayilir, B.; Yalciner, C. C.; Bektas, O.; Kurban, Y. C.; Topcu, M. I.
    Kumkale that is an old Ottoman fort is located near the ruins of ancient Troy. Cannons throwing huge balls were placed in the fort of Kumkale such as other forts on the side of Dardanelles in the period of Ottoman Empire. Ottoman Empire attended to the World War I against Allied Forces in 1914. The Allied forces attacked as bombarding Ottoman's batteries. in Dardanelles. Firstly, the British began their interest in Kumkale with an unsuccessful bombardment on 19th of February, 1915. They followed this up on 25th of February with a bit more success, their warships staying out of range as they pounded the area. When they were leaving from Kumkale, Allied Forces destroyed the cannons. Since then, the destroyed cannons were buried in the ground. However, approximate places of them were recorded in military archives. Here, buried cannons were successfully investigated by magnetic and ground penetrating radar (GPR) methods in three regions, where pieces of cannons, phone cable between array of cannons, equipment used in maintenance and repair of the cannons and pieces of cannons were located.
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    IDENTIFICATION OF BURIED ARCHAEOLOGICAL RELICS USING DERIVATIVES OF MAGNETIC ANOMALIES IN OLYMPOS MOUNTAIN WEST ANATOLIA: A CASE STUDY
    (Univ Agean, Dept Mediterranean Stud, 2013) Buyuksarac, A.; Bektas, O.; Tulunay, E. T.; Ates, A.
    Nif (Olympos) Mountain is a wide archaeological site in west Anatolia (Turkey). Surface investigations and excavations have been done in the area since 12 years. The magnetic method as a geophysical prospection method was applied on an area of 500 m2. This method was chosen because such a prospecting technique provides a great amount of high-resolution magnetic data in a very short time. A correlation could be made between the derivative methods used in this study. Analytic signal (AS) method revealed not only grave but also surrounding stones. The total derivative method could not separate stones and grave. Normalised Standard Total Derivation (NSTD) method gave similar results with AS. Magnetic investigations in Dagkizilca sector of Nif (Olympos) Mountain revealed some interesting results. We expected all anomalies to belong to buried archaeological materials in this area due to the surface disturbances of this site The data processing identified interesting magnetic anomalies that lead to test excavations, which in turn resulted to the unearthing of a grave, as well as, illegal intervening by antiquity robbers.
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    Stress accumulation on the Karlıova (Bingöl) Triple Junction after two big earthquakes (Pazarcık-Ekinözü) in Turkey in 2023
    (Ist Nazionale Di Oceanografia E Di Geofisica, 2025) Bektas, O.; Pirti, A.; Alkan, H.; Yucel, M. A.; Buyuksarac, A.
    Active fault zones primarily influence earthquakes in the Karl & imath;ova (Bing & ouml;l) region. The mentioned region is in Turkey's first and second seismic hazard zones; however, it also includes certain areas in the third and fourth seismic hazard zones. In this study, we investigated the earthquake activities using data collected from various global navigation satellite system (GNSS) surveys of continuously operating reference stations in Turkey (CORS-TR). We also analysed the Coulomb stress change caused by the 15 local earthquakes surrounding the Karl & imath;ova Triple Junction. Additionally, we investigated the relationship between Coulomb stress change and horizontal displacements from GNSS survey results, focusing on horizontal displacement vectors. Besides, gravity data were used to infer the fault geometries and shallow crustal structures. The largest horizontal movement was observed at the BIN1 station, the intersection point of the North Anatolian Fault Zone (NAFZ) and the East Anatolian Fault Zone (EAFZ). At the CORS-TR point on the Karl & imath;ova segment of the EAFZ, the horizontal displacement was calculated to be approximately 10.1 cm in the north-eastern direction. The observations of Coulomb stress change reveal that positive stress variations were observed in the NW-SE and SW-NE directions along the main fault line at a depth of approximately 30 km, in accordance with the tilt transformation of gravity anomalies.
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    SURFACE GEOPHYSICAL INVESTIGATIONS AND PRELIMINARY EXCAVATIONS AT THE DIVRIGI CITADEL, SIVAS (TURKEY)
    (Univ Agean, Dept Mediterranean Stud, 2013) Buyuksarac, A.; Eser, E.; Bektas, O.; Akay, B.; Kosaroglu, S.
    A geophysical survey including magnetic and electromagnetic conductivity survey were made on the Divrigi Citadel in Sivas, Turkey. Eight areas were surveyed according to archaeologists' suggestions for the initial geophysical research. Derivatives of the magnetic data provide well identified images. Mere were two circular anomalies with 7-7.5 m in diameter and probably a buried channel anomaly with 9 m length. A schematic image map was prepared for next excavation campaign and interpreted as snow wells for this area. ElectroMagnetic Conductivity Profiler Survey (EM-CPS) measurements were made on the some low intensity anomalies in two areas. In these measurements, conductivity and in-phase quantity values were recorded. There was a good correlation between magnetic anomalies and conductivity measurements. A conductive area (19-28 milliSiemens per meter, mSm(-1)) overlies the magnetic anomaly with low intensity. A trench is excavated and that excavation allowed us to reveal the geophysical survey results. Preliminary results show that the Divrigi Citadel could be used as the workshop area. Correlation of geophysical surveying and the excavation results show that the geophysical data and advanced processing methods are valuable tools to gather spatial information about individual buried archaeological objects.