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- Geothermal energy (5)
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- 2020 Samos (Sisam)-Kuşadası earthquake (1)
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Articles 1 - 30 of 70
Full-Text Articles in Physical Sciences and Mathematics
Classification Of Plutonic Rock Types Using Thin Section Images With Deep Transfer Learning, Özlem Polat, Ali̇ Polat, Taner Eki̇ci̇
Classification Of Plutonic Rock Types Using Thin Section Images With Deep Transfer Learning, Özlem Polat, Ali̇ Polat, Taner Eki̇ci̇
Turkish Journal of Earth Sciences
Classification of rocks is one of the basic parts of geological research and is a difficult task due to the heterogeneous properties of rocks. This process is time consuming and requires sufficiently knowledgeable and experienced specialists in the field of petrography. This paper has a novelty in classifying plutonic rock types for the first time using thin section images; and proposes an approach that uses the deep learning method for automatic classification of 12 types of plutonic rocks. Convolutional neural network based DenseNet121, which is one of the deep learning architectures, is used to extract the features from thin section …
Fault-Controlled Gas Escapes In The Shelf Sediments Of The Saros Gulf, Ne Aegean Sea, Şebnem Önder, Naci̇ Görür, Alina Polonia, Luca Gasperini
Fault-Controlled Gas Escapes In The Shelf Sediments Of The Saros Gulf, Ne Aegean Sea, Şebnem Önder, Naci̇ Görür, Alina Polonia, Luca Gasperini
Turkish Journal of Earth Sciences
High-resolution marine seismic reflection studies on the eastern shelf of the Saros Gulf have revealed the presence of gas-charged sediments across a narrow submarine valley incised by the Ganos Fault along the North Anatolian Fault system. Quaternary sediments, accumulated during glacial and interglacial periods through transgressional and progradational units, were controlled by glacio-eustatic sea-level fluctuations and tectonic deformation. The transgressional units made of upward-fining deposits created seals at their tops to form gas accumulation pockets. Conversely, the progradational units appear heavily eroded at their top, which is unfavorable for gas accumulation. The sediment?s gas accumulation features include enhanced reflections, acoustic …
Bioerosional Structures From The Late Pleistocene Coral Reef, Red Sea Coast, Northwest Saudi Arabia, Huri̇ye Demi̇rcan, Abdelbaset El Sorogy, Talal Alharbi
Bioerosional Structures From The Late Pleistocene Coral Reef, Red Sea Coast, Northwest Saudi Arabia, Huri̇ye Demi̇rcan, Abdelbaset El Sorogy, Talal Alharbi
Turkish Journal of Earth Sciences
Herein, 20 ichnospecies belonging to 8 ichnogenera were identified in bivalves, gastropods, and corals (n = 701) from the Late Pleistocene coral reef along the Red Sea coast, northwest Saudi Arabia. The trace fossils were produced by clionid sponges (47.39%), endolithic bivalves (42.17%), polychaete annelids (5.42%), vermetid gastropods (3.81%), and acrothoracican barnacles (1.21%). The recognized ichnotaxa were Entobia geometrica, E. ovula, E. cf. goniodes, E. cf. retiformis, E. cretacea, Entobia isp., Gastrochaenolites torpedo, G. lapidicus, G. cf. dijugus, Gastrochaenolites isp., Oichnus paraboloides, O. simplex, Oichnus isp., Caulostrepsis taeniola, Caulostrepsis isp., Maeandropolydora cf. sulcans, Maeandropolydora isp., Renichnus isp., Centrichnus isp., and …
Hydrogeochemical Fingerprints Of A Mixohaline Wetland In The Mediterranean: Güllük Coastal Wetland Systems- Gcws (Muğla, Turkey), Adi̇le Meli̇s Somay Altaş
Hydrogeochemical Fingerprints Of A Mixohaline Wetland In The Mediterranean: Güllük Coastal Wetland Systems- Gcws (Muğla, Turkey), Adi̇le Meli̇s Somay Altaş
Turkish Journal of Earth Sciences
The Güllük coastal wetland system (GCWS), which is located at the contact point of the Menderes Massif and Lycian Nappe, consists of both brackish karstic [Güllük Lagoon wetland (GLW)] and saline [Boğaziçi-Tuzla (Bargylia) coastal wetland (BTW)] ecosystems in western Turkey, and is under protection as a national wetland of importance. This area is important for its unique wetland features, aquaculture, tourism, agriculture, Bodrum airport, and Güllük port facilities. The aim of this study was to evaluate the GLW and BTW, both hydrogeologically and hydrogeochemically, for the first time together. The mixohaline GCWS is recharged from precipitation, streams, and brackish karstic …
Formation Of Ti-Rich Bauxite From Alkali Basalt In Continental Margin Carbonates, Payas Region, Se Turkey: Implications For Sea Level Change In The Upper Cretaceous, Hüseyi̇n Öztürk, Nurullah Hani̇lçi̇, Zeynep Cansu, Cem Kasapçi
Formation Of Ti-Rich Bauxite From Alkali Basalt In Continental Margin Carbonates, Payas Region, Se Turkey: Implications For Sea Level Change In The Upper Cretaceous, Hüseyi̇n Öztürk, Nurullah Hani̇lçi̇, Zeynep Cansu, Cem Kasapçi
Turkish Journal of Earth Sciences
The Payas region bauxite deposits occur as a sandwiched layer that is a few kilometers long and an average of 10 m thick between the lower and upper Cretaceous carbonates of the Arabian Platform. The bauxites occur as 2 types, comprising blanket and pocket, are chemically and texturally homogeneous, and have a thrust structure with ophiolitic mélange formations. The bauxite varies in color, from reddish-brown to grayish-green to black, and has a massive, patchy, and very rare oolitic-pisolitic texture. The bauxite mainly consists of diaspore, hematite, rutile, anatase, rare kaolinite, boehmite, and pyrite minerals.The prismatic and lath-shaped euhedral rutile within …
Late Pleistocene-Holocene Characteristics Of The North Anatolian Fault At Adapazarı Basin: Evidence From The Age And Geometry Of The Fluvial Terrace Staircases, Mehmet Korhan Erturaç
Late Pleistocene-Holocene Characteristics Of The North Anatolian Fault At Adapazarı Basin: Evidence From The Age And Geometry Of The Fluvial Terrace Staircases, Mehmet Korhan Erturaç
Turkish Journal of Earth Sciences
The Late Pleistocene-Holocene evolution of the Adapazarı Basin was investigated using the stratigraphy, geometry, and absoluteluminescence dating of the 4-step fluvial terrace staircases of the Sakarya River. The results revealed that the fluvial cycle was primarily related to relative sea level changes of the Black Sea. The initiation of deposition and the abandonment ages of the terraces indicated relative high stands during marine isotope stage (MIS) 5a (~84-72 ka), 3 (40-30 ka), and 1 (9 ka-recent). The erosional periods in between the terrace steps reflected the response of the Sakarya River to the significantly low stands of the sea. The …
Time Frame For Future Large Earthquakes Near İstanbul Based On East-To-West Deceleratingfailure Of The North Anatolian Fault, Fati̇h Bulut, Asli Doğru
Time Frame For Future Large Earthquakes Near İstanbul Based On East-To-West Deceleratingfailure Of The North Anatolian Fault, Fati̇h Bulut, Asli Doğru
Turkish Journal of Earth Sciences
Large earthquakes that have occurred along the North Anatolian Fault (NAF) were analysed to elaborate the time frame of future large earthquakes near İstanbul. The historical earthquake catalog that was compiled covered 1 nearly complete and 2 fully complete failures of the NAF between 1250 and 2000 AD. These data were used to investigate the space-time systematics of M ≥ 7.0 earthquakes. The catalogue identified an east-to-west decelerating domino-like failure of the NAF. The deceleration starts around the western tip of the 1944 Gerede rupture. This suggested that failure of the remaining unruptured ~250-km section in the west (İstanbul to …
Earthquake History Of The Yatağan Fault (Muğla, Sw Turkey): Implications For Regionalseismic Hazard Assessment And Paleoseismology In Extensional Provinces, Mehran Basmenji, Hüsnü Serdar Akyüz, Erdem Kirkan, Murat Ersen Aksoy, Gülsen Uçarkuş, Nuretti̇n Yakupoğlu
Earthquake History Of The Yatağan Fault (Muğla, Sw Turkey): Implications For Regionalseismic Hazard Assessment And Paleoseismology In Extensional Provinces, Mehran Basmenji, Hüsnü Serdar Akyüz, Erdem Kirkan, Murat Ersen Aksoy, Gülsen Uçarkuş, Nuretti̇n Yakupoğlu
Turkish Journal of Earth Sciences
The southern part of the Western Anatolia Extensional Province is governed by E-W-trending horst-graben systems and NW-SE-oriented active faults. The NW-striking Yatağan Fault is characterised by an almost pure normal sense of motion with a minor dextral strike slip component. Although the settlements within the area have been affected by several earthquake events since ancient times (~2000 BCE), the earthquake potential and history of the Yatağan Fault has remained unknown until a few years ago. Considering the growing dense population within the area, paleoseismology studies were conducted in order to illuminate the historical earthquake activity on the Yatağan Fault. Two …
Multiple Fluid-Mineral Equilibria Approach To Constrain The Evolution Of Thermal Watersin The Hisaralan Geothermal Field, Simav Graben, Western Turkey, Ali̇ Gökgöz, Hali̇m Mutlu, Mehmet Özkul, Ali̇ Kami̇l Yüksel
Multiple Fluid-Mineral Equilibria Approach To Constrain The Evolution Of Thermal Watersin The Hisaralan Geothermal Field, Simav Graben, Western Turkey, Ali̇ Gökgöz, Hali̇m Mutlu, Mehmet Özkul, Ali̇ Kami̇l Yüksel
Turkish Journal of Earth Sciences
In this study seasonal changes in the geochemical and stable isotope compositions of Hisaralan thermal waters in Simav Graben, western Turkey, were investigated with regards to a variety of mineral-water interactions and mixing processes. The Hisaralan and Emendere geothermal waters, with temperatures of up to 99 °C, were mostly of Na-HCO3 and Ca-HCO3 types. The δ18O and δ2H values of the Hisaralan waters ranged from -9.32‰ to -8.73‰ and -65.02‰ to -61.10‰, with maximum seasonal differences of 0.3‰ and 1.8‰. The Emendere waters were represented by a more positive range of δ2H values (-54.95‰ to -54.61‰), while their δ18O compositions …
Time-Dependent Model For Earthquake Occurrence And Effects Of Design Spectra Onstructural Performance: A Case Study From The North Anatolian Fault Zone, Turkey, Ercan Işik, Yunus Levent Eki̇nci̇, Ni̇lgün Lütfi̇ye Sayil, Aydin Büyüksaraç, Mehmet Ci̇han Aydin
Time-Dependent Model For Earthquake Occurrence And Effects Of Design Spectra Onstructural Performance: A Case Study From The North Anatolian Fault Zone, Turkey, Ercan Işik, Yunus Levent Eki̇nci̇, Ni̇lgün Lütfi̇ye Sayil, Aydin Büyüksaraç, Mehmet Ci̇han Aydin
Turkish Journal of Earth Sciences
We have investigated the time-dependent seismicity model of the earthquake occurrence on a regional basis through the North Anatolian Fault Zone (NAFZ). To that end, the studied region has been subdivided into 7 seismogenic zones considering the seismotectonic criteria, and then regional time and magnitude predictable (RTIMAP) model has been performed. Intervened times and magnitudes of main shocks produced in each zone have predictive properties defined by the RTIMAP. The probabilities of the next main shocks in 5 decades and the magnitudes of the next events have been estimated using the formation time and magnitude of the past events in …
Active Tectonic Stress Field Analysis In Nw Iran-Se Turkey Using Earthquake Focalmechanism Data, Ahad Nouri Mokhoori, Behnam Rahimi, Mohsen Moayyed
Active Tectonic Stress Field Analysis In Nw Iran-Se Turkey Using Earthquake Focalmechanism Data, Ahad Nouri Mokhoori, Behnam Rahimi, Mohsen Moayyed
Turkish Journal of Earth Sciences
NW Iran-SE Turkey is a tectonically active zone related to the Arabia-Eurasia convergence, but the active stress state in this zone has not yet been clearly studied. To improve the knowledge of present-day stress state in this region, optimum reduced stress tensor was analysed. For this, a large number of earthquake focal mechanisms (277) were collected. The analyses show most mechanisms exhibit strike-slip to thrust faulting. These data indicate that this region is dominated by an N158° maximum horizontal compressive stress (SHmax) belonging to a transpressional tectonic regime. In the scale of the study area, the relative magnitude of the …
Dictyoconus Aydimi (Gallardo-Garcia And Serra-Kiel, 2016) Comb. Nov., Larger Benthicforaminifera From The Middle-Upper Eocene Of The Middle East (Se Turkey, Iraq, Swiran, Oman): New Evidence For Arabian Plate Faunal Provincialism, Nazi̇re Özgen Erdem, Felix Schlagintweit, Derya Si̇nanoğlu
Dictyoconus Aydimi (Gallardo-Garcia And Serra-Kiel, 2016) Comb. Nov., Larger Benthicforaminifera From The Middle-Upper Eocene Of The Middle East (Se Turkey, Iraq, Swiran, Oman): New Evidence For Arabian Plate Faunal Provincialism, Nazi̇re Özgen Erdem, Felix Schlagintweit, Derya Si̇nanoğlu
Turkish Journal of Earth Sciences
Rogerella aydimi Gallardo-Garcia and Serra-Kiel was described from the Priabonian Haluf Member of the Aydim Formation, Oman. Based on new finds from the Bartonian Hoya Formation of SE Turkey and the Jahrum Formation of Iran, its taxonomic status is discussed herein. It is concluded that it represents a species of Dictyoconus with a simple subepidermal network (1 rafter, 1 intercalary beam) below a thin epiderm. The stratigraphic range of D. aydimi known thus far is Bartonian-Priabonian or Shallow Benthic Zone 17- 20. The distribution of D. aydimi gives further evidence for a Middle-Late Eocene faunal provincialism of the Arabian Plate …
Stacked Debris Flows Offshore Sakarya Canyon, Western Black Sea: Morphology, Seismiccharacterization And Formation Processes, Derman Dondurur, Aslihan Nasif
Stacked Debris Flows Offshore Sakarya Canyon, Western Black Sea: Morphology, Seismiccharacterization And Formation Processes, Derman Dondurur, Aslihan Nasif
Turkish Journal of Earth Sciences
Analysis of ca. 1400 km of multichannel seismic data indicate that the distal part of the Sakarya Canyon within the continental rise is an unstable region with sediment erosion. Fourteen buried debris flows (DB1-DB14), in the stacked form within Plio-Quaternary sediments between 1400 and 1950 m water depth, were observed in the surveyed area. Their run-out distances range from 3.8 to 24.4 km. The largest debris flow DB10 affects ca. 225 km2 surficial area transporting ca. 15 km3 of sediment in S to N direction. The debris flows in the area are considered as gravity flows of unconsolidated sediments mobilized …
First Report Of Myalinid Bivalves In The Lower Carboniferous Of The Hakkari Basin, Se Turkey: Paleoecologic And Paleogeographic Implications, İzzet Hoşgör
Turkish Journal of Earth Sciences
Knowledge of the Late Paleozoic sedimentary history of the northern Gondwana shelf is advanced by new data from the Şort Dere section (Hakkari Basin). Early Carboniferous myalinid bivalves from the Middle East are reported here for the first time. The pre-Permian basement of the Hakkari Basin consists of a Lower Carboniferous sedimentary sequence including the Köprülü and Belek formations. The Köprülü Formation has yielded rich assemblages of vertebrates and invertebrates. Hitherto myalinid bivalves were unknown from this formation; this paper reports the discovery of small and poorly calcified myaliniform shells from two thin beds in the middle part of the …
Mineralogical And Gemmological Characteristics Of Garnets Associated With Xenoliths Within Trachyte Dome, Hisarlıkaya (Ankara), Central Anatolia, Turkey, Eli̇f Varol Muratçay, Si̇bel Tatar Erkül, Güllü Deni̇z Külahci
Mineralogical And Gemmological Characteristics Of Garnets Associated With Xenoliths Within Trachyte Dome, Hisarlıkaya (Ankara), Central Anatolia, Turkey, Eli̇f Varol Muratçay, Si̇bel Tatar Erkül, Güllü Deni̇z Külahci
Turkish Journal of Earth Sciences
Garnet-bearing xenoliths are observed within a trachytic dome extrusion in the Hisarlıkaya region (Ankara). These garnets exhibiting greenish-reddish-dark brown colour and ranging in sizes up to 1 cm were examined in terms of mineralogical, geochemical, and gemmological characteristics. Mineralogical studies indicate that these garnets (And88-93 Grs7-12) are linked to solid solution series, which are dominantly andradite with lower content of grossular. According to major, trace, and rare earth element (REE) analysis, the representative garnet crystal shows high CaO, Fe2O3, Al2O3, MgO, MnO, V, W, and light rare earth elements (LREE) concentrations. These high concentrations might indicate the mobility of these …
Investigation Of Defective Trees Using Electric Resistivity Method, Turgay İşseven, Yi̇ği̇t Yilmaz, Nedi̇m Gökhan Aydin
Investigation Of Defective Trees Using Electric Resistivity Method, Turgay İşseven, Yi̇ği̇t Yilmaz, Nedi̇m Gökhan Aydin
Turkish Journal of Earth Sciences
The resistivity method in geophysics is used to solve various geological and engineering problems. Recently, this nondestructive method has been used on trees to investigate possible infections within the trunks by scanning resistivity variations. In this study, the electrical resistivity method has been aimed to be applied on various trees in Istanbul, Turkey to test whether the method applies to trees via regular resistivity measurement devices used in geophysics. Firstly, a multi-channel resistivity device, that is designed to automatically take measurements on the ground, is modified to carry out the measurements on trees. The measured data are processed using two …
Basin Margin Tectonics And Morphology As Controls Of Delta Type And Architecture: Examples From The Mio-Pliocene Yalvaç Basin (Sw Turkey), Ayhan Ilgar, Ali̇ Ergen, Ercan Tuncay, Alper Bozkurt
Basin Margin Tectonics And Morphology As Controls Of Delta Type And Architecture: Examples From The Mio-Pliocene Yalvaç Basin (Sw Turkey), Ayhan Ilgar, Ali̇ Ergen, Ercan Tuncay, Alper Bozkurt
Turkish Journal of Earth Sciences
This study describes the sedimentary facies and depositional architectures of Gilbert-type and shoal-water delta deposits developed on opposed margins of the extensional fluvio-lacustrine Yalvaç Basin during the late Cenozoic. The roles of syndepositional tectonism, basin dynamics, and hinterland morphology on the development of different delta types are assessed. This asymmetric trough initially opened as an intramontane molasse basin to the southwest of the Sultandağları massif. Its northern and southern margins are bounded by normal faults, which controlled both tectono-sedimentary evolution of the basin and the surrounding palaeomorphology. The lacustrine deposits consist of thin-bedded limestones, marls, and medium to thick-bedded sandstones …
Simulation Of Seismic Triggering And Failure Time Perturbations Associated With The 30 October 2020 Samos Earthquake (Mw 7.0), Eyüp Sopaci, Ati̇lla Arda Özacar
Simulation Of Seismic Triggering And Failure Time Perturbations Associated With The 30 October 2020 Samos Earthquake (Mw 7.0), Eyüp Sopaci, Ati̇lla Arda Özacar
Turkish Journal of Earth Sciences
The 30 October 2020 Samos earthquake (Mw = 7.0) ruptured a north-dipping offshore normal fault north of the Samos Island with an extensional mechanism. Aftershocks mainly occurred at the western and eastern ends of the rupture plane in agreement with the Coulomb static stress changes. Mechanism of aftershocks located west of the rupture supported activation of the neighboring strike-slip fault almost instantly. In addition, a seismic cluster including events with Mw~4 has emerged two days later at the SE side of Samos Island. This off-plane cluster displays a clear example of delayed seismic triggering at nearby active faults. In this …
Combined Qualitative And Quantitative Regional Interpretation Of The Thermal Results Of Magnetic Data In The Eastern Mediterranean Region, İlki̇n Özsöz
Turkish Journal of Earth Sciences
The study presents thermal structure and active-passive tectonic parts of the Eastern Mediterranean Region. Curie point depth, heat flow map, Moho depth and sediment thickness are used for interpretation. The levelled magnetic data that obtained from the World Digital Magnetic Anomaly Map (WDMAM) is used. The magnetic anomaly is divided into 39 zones for Curie point depth estimation. The Curie point depth values are calculated into Fourier domain. Then heat flow map is generated. The estimated Curie point depth values are ranging from 4.5 km to 25 km. Furthermore, heat flow values are between 55 mW/m2 and 277 mW/m2. Moho …
Structural Characteristics Of Transtensional Fault System And Its Implication Forhydrocarbon Accumulation In S Block, South Asia Area, Yuwen Dong, Iftikhar Satti, Maman Hermana, Xu Chen
Structural Characteristics Of Transtensional Fault System And Its Implication Forhydrocarbon Accumulation In S Block, South Asia Area, Yuwen Dong, Iftikhar Satti, Maman Hermana, Xu Chen
Turkish Journal of Earth Sciences
Transtensional faults are well developed in the S Block of the South Asia area, which have an important impact on the hydrocarbon accumulation. However, the transtensional fault structure is very complex. Based on drilling and seismic data interpretation results, faults are divided into three typical types in the Lower Cretaceous, which can help to understand the complex fault system. The main faults are distributed in the NNW-SSE direction and parallel arrangement with dextral strike-slip shear characteristics, which determines the development of the tectonic belt. The secondary faults are often associated with the main faults, often composed of multiple branch faults. …
Quantifying The Bathymetric Stripping Gravity Corrections Of Global Seawater And Majorlakes Over Turkey, Mehmet Si̇mav, Hasan Yildiz
Quantifying The Bathymetric Stripping Gravity Corrections Of Global Seawater And Majorlakes Over Turkey, Mehmet Si̇mav, Hasan Yildiz
Turkish Journal of Earth Sciences
Gravity data inversion or interpretation requires the removal of the gravitational effects of the a priori known geologic and/or morphologic features within the Earth?s system to model and reveal the remaining signals of the unknown anomalous subsurface density distributions. The Bouguer gravity anomalies reduced by the normal gravitational field of the Earth and the gravitational attraction of the topographic masses above the sea level are frequently used in geophysics for this purpose. However, density contrast effects of the other major known elements, such as offshore seawater, inland water bodies, glaciers, and/or sediments can be removed from the Bouguer gravity anomalies, …
Geology, Mineralogy, And Geochemistry Of The Zarloukh Bentonite -Tuff Deposit,Hemrin South Mountain, Northern Iraq: Implications For Genesis And Geotectonics, Yawooz Kettanah
Turkish Journal of Earth Sciences
The Quaternary Zarloukh Bentonite -Tuff (ZBT) deposit occurs within the Hemrin South Mountain, northern Iraq. The ZBT deposit occurs as depression-filling exposed on the erosional surface of the siliciclastic Pliocene Muqdadiya Formation and covered by an overburden of recent sediments. The thickness of the studied industrial bentonite bed is ~80-100 cm, occurring at the bottom of these depressions, covered by ~3-4 m thick bedded volcanic tuff, which also contains many 10-12 cm thick bentonite layers along its bedding planes. The volcanic ash at the bottom of lakes/swamps with shallow water content acted as basins for the deposition of falling volcanic …
Generation Of Collision-Induced Early To Middle Miocene Adakitic Magmas In Pertek(Tunceli) Area From Eastern Anatolia Postsubductional Setting, Turkey, Sevcan Kürüm, Hakan Çoban, Pinar Aydin
Generation Of Collision-Induced Early To Middle Miocene Adakitic Magmas In Pertek(Tunceli) Area From Eastern Anatolia Postsubductional Setting, Turkey, Sevcan Kürüm, Hakan Çoban, Pinar Aydin
Turkish Journal of Earth Sciences
Early to Middle Miocene andesite-dacite porphyries are well exposed to the Pertek area of Tunceli, Eastern Anatolia, and represent an example of adakite-like magma generation in Eastern Anatolia (postsubductional) collisional setting. Mineral associations in these porphyries are composed of plagioclase (oligoclase-andesine-labradorite), amphibole (pargasite-ferropargasite), biotite, rare quartz, K-feldspar, and minor Fe-Ti oxides. Geochemically they are high-K calc-alkaline in nature and characterized by high SiO2 (>62 wt.%), Al2O3 (mostly >16 wt.%), Na2O/K2O ratio (1.3-1.7), and Sr (generally >400 ppm) contents. Volcanic rocks display depletion in HFSEs, Nb, Ta, and Ti, and slight negative Eu anomaly; have low HREEs, Y (
Source Modelling And Stress Transfer Scenarios Of The October 30, 2020 Samos Earthquake: Seismotectonic Implications, Sotiris Sboras, Ilias Lazos, Stylianos Bitharis, Christos Pikridas, Dimitrios Galanakis, Aristeidis Fotiou, Alexandros Chatzipetros, Spyros Pavlides
Source Modelling And Stress Transfer Scenarios Of The October 30, 2020 Samos Earthquake: Seismotectonic Implications, Sotiris Sboras, Ilias Lazos, Stylianos Bitharis, Christos Pikridas, Dimitrios Galanakis, Aristeidis Fotiou, Alexandros Chatzipetros, Spyros Pavlides
Turkish Journal of Earth Sciences
On October 30, 2020, a strong earthquake (Mw6.6-7.0) occurred offshore, just north of Samos Island, causing life losses, injuries and damages, especially on the Turkish side. The broader area is characterized by a complex geodynamic setting with both rich seismic history and numerous active faults of different direction and kinematics. The first aim of this study is to define the seismic source of the mainshock, based on seismological and geodetic data (GPS measurements and originally processed GNSS records), as well as our field observations on Samos Island few days after the mainshock. The integration of this information leads to a …
Effects Of Seismic Activity On Groundwater Level And Geothermal Systems In İzmir, Western Anatolia, Turkey: The Case Study From October 30, 2020 Samos Earthquake, Taygun Uzelli̇, Esra Bi̇lgi̇ç, Bahadir Öztürk, Alper Baba, Hasan Sözbi̇li̇r, Orhan Tatar
Effects Of Seismic Activity On Groundwater Level And Geothermal Systems In İzmir, Western Anatolia, Turkey: The Case Study From October 30, 2020 Samos Earthquake, Taygun Uzelli̇, Esra Bi̇lgi̇ç, Bahadir Öztürk, Alper Baba, Hasan Sözbi̇li̇r, Orhan Tatar
Turkish Journal of Earth Sciences
The October 30, 2020 Samos earthquake (Mw 6.6) affected the Aegean Sea and environs, caused destruction and loss of life in the city of İzmir located 70 km away from the earthquake epicenter. Before this earthquake, water resources were monitored in the areas of Bayraklı, Gülbahçe, and Seferihisar. For this purpose, 10 groundwater monitoring wells were drilled in the Bayraklı area, where groundwater level, temperature, and electrical conductivity changes were monitored at 1-h intervals in 5 wells. Besides physical parameters such as groundwater levels, temperatures and electrical conductivities, hydrogeochemical cations, and anions measured in the study area. Change in the …
Updated Historical Earthquake Catalog Of İzmir Region (Western Anatolia) And Itsimportance For The Determination Of Seismogenic Source, Çi̇ğdem Tepe, Hasan Sözbi̇li̇r, Semi̇h Eski̇, Ökmen Sümer, Çağlar Özkaymak
Updated Historical Earthquake Catalog Of İzmir Region (Western Anatolia) And Itsimportance For The Determination Of Seismogenic Source, Çi̇ğdem Tepe, Hasan Sözbi̇li̇r, Semi̇h Eski̇, Ökmen Sümer, Çağlar Özkaymak
Turkish Journal of Earth Sciences
Although destructive earthquakes have not occurred in the instrumental period except for the 30 October 2020 Samos earthquake (Mw = 6.6), the records show that there were significant earthquakes that caused great destruction in İzmir and its surroundings in the historical period. However, it is not yet clear which faults are causative for these earthquakes affecting İzmir and its surroundings. For this purpose, it has been attempted to determine new geological, seismological and environmental data by examining a large number of original sources, records and old international earthquake catalogs, other than the existing national catalogs used in seismicity studies in …
Tsunami Hazard, Warning, And Risk Reduction In Italy And The Mediterranean Sea: State Of The Art, Gaps, And Future Solutions, Stefano Lorito, Alessandro Amato, Lorenzo Cugliari, Fabrizio Romano, Roberto Tonini, Cecilia Valbonesi, Manuela Volpe
Tsunami Hazard, Warning, And Risk Reduction In Italy And The Mediterranean Sea: State Of The Art, Gaps, And Future Solutions, Stefano Lorito, Alessandro Amato, Lorenzo Cugliari, Fabrizio Romano, Roberto Tonini, Cecilia Valbonesi, Manuela Volpe
Turkish Journal of Earth Sciences
Historical catalogues show evidence for about 300 tsunamis in European coastal waters since 1600 BC, and tsunami hazard models like the NEAMTHM18 provide the probability of future inundation from earthquake-induced tsunamis. A recent wake-up call came from the 2020 Mw7.0 Samos-İzmir earthquake and the following moderate, damaging tsunami. Five accredited Tsunami Service Providers (TSPs) run by IPMA (Portugal), CENALT (France), INGV (Italy), NOA (Greece), and KOERI (Turkey), and several national centers monitor the seismicity and provide tsunami alerts in the framework of the UNESCO Tsunami Early Warning and Mitigation System in the North-eastern Atlantic, the Mediterranean and connected seas (NEAMTWS). …
Geothermal Reservoir Rocks Of The Büyük Menderes Graben (Turkey): Stratigraphiccorrelation By A Multiproxy Approach, Dorothee Siefert, Markus Wolfgramm, Thomas Koelbel, Johannes Glodny, Jochen Kolb, Elisabeth Eiche
Geothermal Reservoir Rocks Of The Büyük Menderes Graben (Turkey): Stratigraphiccorrelation By A Multiproxy Approach, Dorothee Siefert, Markus Wolfgramm, Thomas Koelbel, Johannes Glodny, Jochen Kolb, Elisabeth Eiche
Turkish Journal of Earth Sciences
This paper focuses on the correlation of two different marble units from an approximately 3,900 m deep geothermal exploration well (GP-1) in western Turkey by petrographical and geochemical data. Future geothermal exploration drilling in that area will benefit from a better (tectono) stratigraphic correlation and a better definition of the reservoir geometry in the basin. It is an innovative approximation in many settings to correctly correlate marble units without clear stratigraphic markers or fossil record, in particular, when sample material is restricted to cuttings. The most distinctive petrographical and geochemical properties in this study are colour, light transmission along with …
High Heat Generating Granites Of Kestanbol: Future Enhanced Geothermal System (Egs)Province In Western Anatolia, Dornadula Chandrasekharam, Alper Baba
High Heat Generating Granites Of Kestanbol: Future Enhanced Geothermal System (Egs)Province In Western Anatolia, Dornadula Chandrasekharam, Alper Baba
Turkish Journal of Earth Sciences
Although the western Anatolian region is a foci for hydrothermal systems, this region has several high heat-generating granitic intrusive bodies that qualify to be candidates for enhanced geothermal systems (EGS). Considering the future energy requirement, carbon dioxide emissions reduction strategies, food, and water security issues, these granites appear to be the future clean energy source for the country. One such granite intrusive is located in the Kestanbol area in the western Anatolian region. The radioactive heat generation of this 28 Ma old granite varies from 5.25 to 10.38 μW/m3 with a heat flow of 92.47 to 128.61 mW/m 2. These …
Harcourt Granite Scco2 Water Interaction: A Laboratory Study Of Reactivity Andmodelling Of Hydrogeochemical Processes, Badulla Liyanage Avanthi Isaka, Ranjith Pathegama Gamage
Harcourt Granite Scco2 Water Interaction: A Laboratory Study Of Reactivity Andmodelling Of Hydrogeochemical Processes, Badulla Liyanage Avanthi Isaka, Ranjith Pathegama Gamage
Turkish Journal of Earth Sciences
Batch-type laboratory reactivity experiments and modelling of hydrogeochemical interactions of a granite-scCO2-water system were conducted at 100 °C and 10 MPa in order to evaluate the geochemical and mineralogical responses of the granite to long-term reaction. The laboratory reactivity tests were conducted for a total duration of 70 days, and the continued hydrogeochemical interactions for up to 210 days were determined by geochemical simulations. The reacted granite powder and the residual solutions were subjected to several analytical techniques, including inductively-coupled plasma optical emission spectrometry (ICP-OES), X-ray diffraction (XRD), scanning electron microscopy (SEM) and pH measurements, in order to characterise the …