A5079450638- earthquake and tectonic studies
- Earthquake Detection and Analysis
- Seismology and Earthquake Studies
- High-pressure geophysics and materials
- Seismic Waves and Analysis
- Geological and Geochemical Analysis
- Metallurgy and Cultural Artifacts
- Seismic Imaging and Inversion Techniques
- Drilling and Well Engineering
- Disaster Response and Management
- Geological and Geophysical Studies Worldwide
- Structural Integrity and Reliability Analysis
- Geological and Geophysical Studies
- Geological Studies and Exploration
- Turkish Urban and Social Issues
- Disaster Management and Resilience
- Structural Health Monitoring Techniques
- Geotechnical Engineering and Underground Structures
- Maritime and Coastal Archaeology
University of Potsdam
2022-2024
GFZ Helmholtz Centre for Geosciences
2020-2024
Istituto Nazionale di Geofisica e Vulcanologia
2022
Kandilli Observatory and Earthquake Research Institute
2018-2021
University of Victoria
2021
Boğaziçi University
2014-2021
Seismic background noise dramatically decreased as a result of lockdown measures in place for mitigating the spread COVID-19.
Abstract On 6 February 2023, southeastern Türkiye experienced two Mw 7.7 and 7.6 earthquakes. The earthquake sequence caused widespread damage tens of thousands casualties in Syria. We analyze mainshocks aftershocks, combining complementary source characterization techniques, relying on local, regional, teleseismic data. Backprojection analysis finite inversion for the resolve coseismic slip, rupture length, propagation mode along main faults, whereas centroid moment tensor 221 aftershocks...
The 2017 July 20 Bodrum–Kos earthquake (Mw 6.6) is the largest instrumentally recorded in Gökova graben, one of primary physiographic features SW Turkey. Using seismology and satellite geodesy, we investigate its source characteristics, aftershock distribution, relationship with earlier instrumental seismicity, association known surface faulting. We show that ruptured a planar (non-listric) normal fault dips gently (∼37°) northwards beneath northern Gulf coastline, initiating at depth ∼11 km...
The objective of this work is the estimation moment tensor, with particular attention to analysis full kinematically characterize seismogenic sources in shallow crust Mt. Pollino area (Southern Italy). tensor an indispensable tool for understanding rupture process, determining fault geometry, characteristics medium volume, and acting stress field. In regions a complex tectonic structure, such as area, double couple model may not be sufficient characterizing sources. inversion essential...
We investigate the origin of a long-lived earthquake cluster in Fars arc Zagros Simply Folded Belt that is colocated with major Shanul natural gas field. The emerged January 2019 and initially comprised small events Mn ∼ 3-4. It culminated on 9 June 2020 pair Mw 5.4 5.7 earthquakes, which was followed by >100 aftershocks. assess spatiotemporal evolution sequence using multiple event hypocenter relocations, waveform inversions, Sentinel-1 Interferometric Synthetic Aperture Radar (InSAR)...
Abstract A seismic swarm affected the 53.3°–54.3° Latitude North section of Mid‐Atlantic Ridge from 26 September to 10 December 2022. We rely on regional, teleseismic and array data relocate 61 hypocenters derive 77 moment tensors. The 2022 released a cumulative equivalent Mw 6.3. Seismicity was shallow (7 ± 3 km depth). Most earthquakes are located along ridge axis with typical, NS oriented normal faulting mechanisms, but few among largest latest have unusual thrust mechanisms locations as...
Reservoir-triggered seismicity has been observed near dams during construction, impoundment, and cyclic filling in many parts of the earth. In Turkey, number increased substantially over last decade, with Atatürk Dam being largest dam Turkey a total water capacity 48.7 billion m 3 . After construction dam, monitoring network improved. Considering earthquakes above long-term completeness magnitude M C = 3.5, local rate after reservoir. Recently, two damaging w 5.5 5.1 occurred town Samsat...
Despite significant scientific advances in earthquake research and building codes, Türkiye remains vulnerable to earthquakes, as demonstrated by the tragic Kahramanmaraş February 2023. In contrast, countries such Chile Japan have successfully reduced damage through strict enforcement of codes effective public awareness campaigns. This paper highlights need for seismic resilience proposes actionable guidelines bridge gap between science society. These include comprehensive geoscience...
Abstract. The 24 January 2020 Mw 6.77 Elazığ-Sivrice earthquake (Turkey), responsible for 42 casualties and ~ 1600 injured people, is the largest affecting East Anatolian Fault (EAF) since 1971. partially ruptured a seismic gap. mainshock was preceded by two foreshocks with ≥ 4.9 small seismicity clusters occurring in previous months close to nucleation point of main rupture. significant aftershock sequence comprises twelve earthquakes 4.5 within 60 days. We jointly model quasi co-seismic...
Abstract The correct orientation of seismic sensors is critical for studies such as full moment tensor inversion, receiver function analysis, and shear-wave splitting. Therefore, the horizontal components needs to be checked verified systematically. This study relies on two different waveform-based approaches, assess sensor orientations broadband network Kandilli Observatory Earthquake Research Institute (KOERI). an important backbone seismological research in Eastern Mediterranean Region...
The recent M 7.5 earthquake that struck Japan on January 1st, 2024, marked a significant event due to its substantial magnitude and surprisingly minimal damage. This occurrence serves as stark contrast Türkiye's experience, notably the devastating Kahramanmaraş of February 2023. Japan's impressive success in resilience, achieved through strict building code enforcement effective public awareness campaigns, stands sharp ongoing struggle with seismic vulnerability....
Abstract We analyze seismicity and centroid moment tensors (CMTs) on the Reykjanes Peninsula, Iceland, during early phase of a widespread unrest period that led to multiple fissure eruptions between 2021 2024. use dense temporary seismic array, together with fiber‐optic distributed acoustic sensing data, incorporate first‐motion polarities into CMT inversion improve accuracy, generating total 300 robust solutions for magnitudes , focusing 83 reliable earthquakes interpretation. The CMTs...
Abstract This work analyzes temporal variations of seismic velocities at Mt. Etna from August 2018 to February 2019. During this time period, a strong flank eruption accompanied by intense seismicity and ground deformation took place along fracture that opened on 24 December the base New South‐East summit crater. Furthermore, two moderate earthquakes—the 6 October M L 4.7 26 4.8—associated with volcanic activity were recorded. In study, we computed cross‐correlation functions (CCFs) between...
On February 6, 2023, southeastern Turkey was hit by two of the most devastating earthquakes in instrumental period country, with Mw 7.7-7.8 and 7.6, respectively. Both caused massive damage total tens thousands casualties Syria. In this study, we analyze rupture processes main- aftershocks combining different seismic source characterization techniques using teleseismic, regional local data. We perform finite inversion back projection-based analyses for main shocks invert probabilistic...
Within two hours on 01 July 2023, three earthquakes of Mw 5.8-6.0 hit the SE Fars arc, Iran. In following months, region characterized by collision Iranian and Arabian plate, thrust faulting, salt diapirism was stroke more than 120 aftershocks mL 3.1-5.2, which largest events occurred within one minute 23 2023 in spatial vicinity to each other. We analyzed both large mainshocks using different techniques, such as inversion seismic satellite deformation data a joint process aftershock...
This work presents new focal mechanism solutions from recent seismic data which have never been exploited so far for the weak-to-moderate (ML 2.3-6.4) earthquakes and a 3D depict scheme Kopili Fault Zone (KFZ). For first time, we defined all forms of faulting in upper crust and, with stronger events favouring reverse strike-slip Kofili Moment Tensor (MT) were successfully obtained through full-waveform inversions 60 events. The stress are estimated based on MT results as well published 16...
<p>Three-component seismograms recorded by seismic sensors are momentous data to study the source mechanism of earthquakes. Correct orientation relative true north is important for waveform inversion techniques. Yet, non-precise horizontal components has been reported in many networks worldwide. In this study, we evaluated effect sensor misorientations (deviations from north) on time-domain moment tensor inversion, relying recent studies broadband Iran and Turkey. We selected...
A large seismic swarm affected the North Mid-Atlantic ridge between September and November 2022, with an outstanding seismicity rate a cumulative moment equivalent to magnitude Mw 6.3. We performed detailed seismological analysis using regional, teleseismic array data reconstruct spatiotemporal evolution of seismicity. Combining template matching, relative location full tensor inversion, we identify that most was located in narrow band along ridge, typical normal faulting mechanisms....