Yavuz Gül

Slip asymmetry of the Yedisu Segment of the North Anatolian Fault from GPS velocity fields

Oguzhan Tecel, Hüseyin Duman, Bekir Poyraz, Fatih Poyraz et autres

The Yedisu Segment is one of the most significant seismic gaps of the North Anatolian Fault Zone (NAFZ), following the segments located near Istanbul. This segment is approximately 80 km long and has remained seismically quiet for about 242 years. It has …

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InSAR time-series results of the 2025 Santorini unrest, using Sentinel-1A data

Bekir Poyraz, Hüseyin Duman, Yavuz Gül, Fatih Poyraz et autres

Santorini Island is of volcanic origin and has historically faced repeated volcanic and seismic activity. In early 2025, increased volcanism and intensified earthquake activity, similar to 2011-2012, caused residents’ concern. This study aims to characterize ground deformation on Santorini Island during its …

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A new methodology for determining the long-term behavior of earth surface deformations from InSAR results

Yavuz Gül, Kemal Özgür Hastaoğlu, Fatih Poyraz

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Comparison of the monitoring of surface deformations in open-pit mines with Sentinel-1A and TerraSAR-X satellite radar data

Yavuz Gül, Bekir Poyraz, Fatih Poyraz

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INVESTIGATION OF PROSPECTIVE TEACHERS' GENERAL SELFEFFICACY LEVELS

M. Ertuğrul Öztürk, Yavuz Gül

This study aimed to examine the general self-efficacy levels of teacher candidates. The sample of the study consisted of teacher candidates studying in different departments of Kyrgyzstan-Turkey Manas University in the 2023-2024 academic year. The General SelfEfficacy Scale was used to determine …

Determination of long-term deformation behaviours with InSAR data at a dump site of an open-pit coal mine in Turkey

Yavuz Gül, Bekir Poyraz

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EVALUATION OF THE MONITORING OF SURFACE DEFORMATIONS IN OPEN-PIT MINES WITH SENTINEL-1A SATELLITE RADAR DATA

Bekir Poyraz, Yavuz Gül, Fatih Poyraz

Accidents and loss of life can occur in surface mines due to large mass displacements (landslides). In order to prevent these irreversible situations, it is very important to identify displacements in advance or to take necessary measures by obtaining early warning signs. …

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EVALUATION OF GROUND VIBRATION AND AIR BLAST MEASUREMENTS INDUCED BY BLASTING IN A QUARRY MINE

Bahadır ŞENGÜN, Yavuz Gül

The energy released during blasting in underground and surface mines for excavation purposes can cause flyrock, excessive level of ground vibration and air blast. In this study, ground vibration and air blast induced by blasting were measured and evaluated for a quarry …

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Determination of periodic deformation from InSAR results using the FFT time series analysis method in Gediz Graben

Kemal Özgür Hastaoğlu, Fatih Poyraz, Hediye Erdoğan, İbrahim Tiryakioğlu et autres

Permanent Scatterers (PS) point velocities obtained by the interferometric synthetic aperture radar (InSAR) method are generally determined using the linear regression model, which ignores periodic and seasonal effects. In this study, software was developed that can detect periodic effects by applying fast …

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Maden Sahalarında Yerinde Birim Hacim Ağırlık ve Kabarma Faktörünün İHA Fotogrametrisi ile Belirlenmesi

Yavuz Gül

Maden sahalarında yerinde hacim ve kazı sonrası kabarma faktörünü doğru bir şekilde belirlemek için bir çözüm bulmak, sektördeki zorluklardan biridir. Bu değerler yükleyici kova büyüklüğü seçiminden ekipman kapasitelerinin belirlenmesine, pasa döküm ve cevher stok alanlarının boyutlandırılmasına kadar birçok mühendislik hesaplamalarında gerekli ve …

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Corner Reflector (CR) Installation and Controlling of Permanent Scatterer (PS) in Mine Sites

Bekir Poyraz, Yavuz Gül

Deformations in mining areas have been started to be monitored by satellite SAR-based methods, which have recently emerged as an alternative to classical methods (GNSS receivers, Geometric Leveling, Terrestrial Lidar, UAV Photogrammetry, etc.). The most important advantage of this method is that …

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Investigation of the effect of height difference and geometry of GCP on position accuracy of point cloud in UAV photogrammetry

Kemal Özgür Hastaoğlu, Hacer Sura Kapicioglu, Yavuz Gül, Fatih Poyraz

In this study, the effect of the height difference, geometry, and number of GCPs on the positional accuracy of point cloud was investigated in UAV photogrammetry. It has been determined that the topographic change of the study area, the geometric structure of …

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