The Geothermal Potential of Büyük Menderes Graben Obtained by Combined 2.5-D Normalized Full Gradient Results

Pamukçu, Oya; Gönenç, Tolga; Çırmık, Ayça; Pamukcu, C.; Ertürk, Nurtaç

doi:10.1007/s00024-019-02227-y

Cited by 12 publications

(4 citation statements)

References 37 publications

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“…For comparison, a tomographic image of the surface group wave velocity obtained from this study for 2 s period (Figure 8A) is shown together with Bouger gravity anomaly (Figure 8B), heat flow (Figure 8C), and magnetic (Figure 8D) results reported by Gonenc et al, 2012, Pamukcu et al, 2019, Pazvantoglu et al, 2021Teknik et al, 2023. We interpret the low velocity zones in offshore areas (e.g., IB, CB) as sedimentary sequences overlying a Miocene basement. The size of the IB low velocity zone is 50 × 20 km (Figure 8A).…”

Section: Figurementioning

confidence: 61%

Ambient noise tomography of the Aegean region of Türkiye from Rayleigh wave group velocity

Mulumulu,

Polat,

Chávez-García

2023

Front. Earth Sci.

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We have studied Rayleigh wave group velocities beneath the Aegean region of Türkiye using ambient noise tomography. Noise data were gathered from 43 broadband seismic stations belonging to three permanent broad-band arrays. The cross-correlation method was used to estimate empirical Green’s functions. Group velocities of the fundamental mode Rayleigh waves were determined using multiple filter technique. We measured dispersion for each station pair in a period range of 2–12 s and computed maps of group velocity distribution using the fast marching surface tomography method. The group velocity maps correlate well with the geological and tectonic features of the region, displaying low velocities for the Quaternary alluvial basins, moderate velocities for Cretaceous rocks, and high velocities for the regions where gneiss and granitoid rocks outcrop. Low velocity anomalies may be associated with the grabens and horsts formed by faulting and to deep mantle flow. We detect potential offshore geothermal zones in Izmir and Candarli Bay. The information from broad-band networks improves the resolution of crustal surface wave velocity structures, particularly for shallow depths. This improvement will support the assessment of seismic hazard, as the shallow layers of the crust contribute significantly to seismic activity.

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Section: Figurementioning

confidence: 61%

Ambient noise tomography of the Aegean region of Türkiye from Rayleigh wave group velocity

Mulumulu,

Polat,

Chávez-García

2023

Front. Earth Sci.

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“…Pamukçu ve diğ. [50] çalışmalarında Batı Anadolu'nun Jeotermal potansiyeline ait sonuçlarda olası ısıtıcı kaynak ortamların 10 km ve daha derinde ve 18 km civarında olduğuna vurgu yapmıştır. Farklı araştırmacıların çalışmalarında Batı Anadolu'ya ait Curie derinlik noktalarının 8.3km ile 17.1 km arasında olduğu verilmiştir [25], [51], [52].…”

Section: Discussionunclassified

Availability of topex V28.1 gravity data across the continent excluding seas. A case study, Western Anatolia example

Gönenç¹

2021

Pamukkale J Eng Sci

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Yerbilimlerinde yerinde ölçümün mümkün olmadığı yerlerde uydu verileri çok önemli araçlardır. Özellikle gravite verileri gömülü yapıların, yanal yönlü ortam değişikliklerinin tespitinde önemli Jeofiziksel yöntemlerdendir. Günümüzde birçok küresel uydu modelleri benzer problemlerin çözülmesinde kullanılmaktadır. TOPEX V28.1 veri seti diğer modellere göre çok daha sık örnekleme aralığına sahiptir. Fakat genel uygulamada elde edilen veri seti serbest hava anomali değerleridir. Bu nedenle uygulamacılar kara verilerinin değerlendirmesinde bu veri setini tercih etmemektedirler. Bu çalışmada örnekleme aralığının daha sık olması nedeniyle TOPEX V28.1 veri setinden Bouguer Gravite Anomali değerlerinin hesaplanması hedeflenmiştir. Elde edilen sonuçlar EGM08 ve WGM 2012 sonuçları ile karşılaştırılmış uyumları denetlenmiştir. Güç spektrumu yöntemi ile hesaplanan derinlikler irdelenmiş, yanal yönlü türev sonuçları ile karşılaştırıldıktan sonra 3 Boyutlu (3-B) Euler derinlik uygulaması ile Batı Anadolu genel tektonik yapısı içinde sonuçlar tartışılmıştır.In geosciences, satellite data are very important, where in-situ methods cannot be applicable. Especially the gravity data are very important for investigating the buried structures and discovering the changes of subterranean media alongside laterally. Nowadays, many global satellite models are used for solving these problems. The TOPEX V28.1 data set has a much more frequent sampling interval than other models. However, the TOPEX data set obtained in the general application is free air anomaly values. For this reason, researchers do not prefer TOPEX dataset for evaluation. In this study the target is using of TOPEX data set, which has a much more frequent sampling interval, to obtain Bouguer gravity values. These calculated new Bouguer gravity results have been compared with the results of the EGM08 and WGM2012 models to check coherence. The depth values which calculated by using the power spectrum method were investigated the findings have been compared with the result of the horizontal derivatives and finally findings of the general tectonic of the western Anatolian which obtained by using 3-D Euler depth solutions were discussed.

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“…; the Menderes Massif). Despite several tectonic and geologic research over the last four decades in the western Turkey [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19], there are a few geophysical studies based on the gravity/magnetic methods especially in the south of western and central Turkey [20][21][22][23][24][25][26][27][28]. Despite that, there are very limited geothermal studies based on the spectral analysis of magnetic data in the southwestern Turkey.…”

Section: Introductionmentioning

confidence: 99%

The Upper Crustal Thermal Structure of The Cameli Basin And Its Surrounding (SW Anatolia, Turkey) By The Fractal Based Centroid Method Of Aeromagnetic Data and Its Relationship With Earthquakes Occurring In The Region

Akar

2023

Preprint

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The Cameli Basin and its surroundings are located at the southwestern Anatolia of Turkey, and one of the tectonically active regions in western Turkey. The Curie point depth of continental crust can help us to determine the regional tectonic and geothermal structures. The aeromagnetic magnetic data of the study region were used to determine the Curie Point Depth estimates. The fractal based centroid method used for this purpose. The fractal approach removes the effect of fractal magnetization in the power spectrum. The depth to the bottom of the deepest magnetic sources in the study region range between 6.9 and 14.05. The estimated thermal gradient varies from 41.28°C/km to 89.23°C/km and average value is 58.59°C/km (580°C for magnetite). The distributions of earthquakes are compatible with NW-SE trending estimated Curie depth anomalies. Interpretation indicates that the depth to the Curie isotherm is considerably shallower than the Moho depth.

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The Geothermal Potential of Büyük Menderes Graben Obtained by Combined 2.5-D Normalized Full Gradient Results

Cited by 12 publications

References 37 publications

Ambient noise tomography of the Aegean region of Türkiye from Rayleigh wave group velocity

Ambient noise tomography of the Aegean region of Türkiye from Rayleigh wave group velocity

Availability of topex V28.1 gravity data across the continent excluding seas. A case study, Western Anatolia example

The Upper Crustal Thermal Structure of The Cameli Basin And Its Surrounding (SW Anatolia, Turkey) By The Fractal Based Centroid Method Of Aeromagnetic Data and Its Relationship With Earthquakes Occurring In The Region

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