Deformation Analysis of East Mediterranean with using SSPX software

Malaliçi, Barış Can; Pamukçu, Oya; Çırmık, Ayça; Dindar, Hilmi

doi:10.21205/deufmd.2019216123

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…this context, the boundaries and depths of the known structures were determined and the satellite gravity data were used to determine the sources of this activity in the region. The satellite gravitational, terrestrial gravity and GPS/GNSS data were successfully used to clarify tectonic elements in the Western Anatolian by previous studies Doğru et al, 2018;Kahveci et al, 2019;Malaliçi et al, 2019). The applications of boundary analysis, power spectrum, tensor and invariant methods were applied on theoretical data in order to determine the extension of a 3-D structure in this study.…”

Section: Introductionmentioning

confidence: 95%

Analysis of gravity disturbance for boundary structures in the Aegean Sea and Western Anatolia

Doğru

Pamukçu

2019

Geofizika

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Western Anatolia has been shaped N–S-trending extensional tectonic regime and W-E trending horst, grabens and active faults due to the collision of Africa, Arabian and Eurasia plates. The borders of the Aegean Sea tectonic is limited between eastern of Greece, western of Anatolia and Hellenic subduction zone in the south of Crete. To evaluate these tectonic elements gravity disturbance data of the Aegean Sea and Western Anatolia was used in this study. It is thought that the gravity disturbance data reflects the tectonic elements and discontinuities way better than gravity anomaly due to the calculation from the difference between gravity and normal gravity at the same point so thus the tensors and invariants of the study area were calculated and the power spectrum method was applied to the gravity disturbance data. Various boundary analysis methods were applied to the gravity disturbance data to compare the discontinuities obtained from the tensors both theoretical and case study. These methods were tested initially on theoretical data. Within the scope of the theoretical study, a single model and three bodies model were taken into consideration. When the results are examined, it is observed that the Tzz tensor component gives very clear information about the location of the structure. Likewise, when the Txx, Tyy components and invariant results are examined, the vertical and horizontal boundaries were successfully obtained. In addition, the mean depths of these structures were determined using the power spectrum method. In the case application stage, the gravity disturbance data obtained from the Earth Gravitational Model of the eastern of the Aegean Sea and western of Anatolia were evaluated. The tensor and invariants of this gravity disturbance data were first calculated. New possible discontinuities have been identified in the tensors and some of the obtained discontinuities were clarified in their previous discussions. Also, the mean depths of the possible structures were calculated by the power spectrum method at four profiles taken from gravity disturbance data. These depth values are consistent with the depth values of the structural discontinuities obtained from previous studies. Finally, the upward continuation was applied to Tyy, Tyz and Tzz tensors up to 20 km. The positive anomaly values in Tyz and Tzz components and negative anomaly values in Tyy component are consistent with the Western Anatolia Transfer Zone. The structural differences between the eastern and the western of Western Anatolia are noteworthy in the upward continued results of the tensors. In addition, the positive and negative anomalies are notable in areas where the big earthquakes occurred in the last 3 years in the Tyz invariants.

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Section: Introductionmentioning

confidence: 95%

Analysis of gravity disturbance for boundary structures in the Aegean Sea and Western Anatolia

Doğru

Pamukçu

2019

Geofizika

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“…The SSPX is a Macintosh, Cocoa/Universal application to calculate strain from displacement/velocity data in two and three dimensions [Cardozo and Allmendinger, 2009]. The SSPX calculates different types of deformation parameters (extension, shortening, dilatation and rotation) and provides the results as maps of their distribution over the investigated area [Cardozo and Allmendinger, 2009;Malaliçi, 2019;Malaliçi et al, 2019].…”

Section: The Sspx Software For Deformation Analysismentioning

confidence: 99%

Exploring the Kinematic Structure of Mount Etna Volcano (Sicily, Italy) by Deformation Analysis and Gravity Gradient Tensors

Çırmık

Doğru²,

Pamukçu³

et al. 2022

Annals of Geophysics

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Ground deformation monitoring of active volcanoes is used routinely to determine phases of vol‐ cano unrest and can provide insights in the evolving plumbing system of a volcano and the influence local tectonics structures have on the volcano tectonic evolution of the volcanic edifice. Volcanic deformation analysis can be performed using velocity and direction measurements of the ground surface using Global Navigation Satellite System (GNSS). In this study, we perform two‐dimen‐ sional deformation analyses of pre‐ and post‐eruptive phases with the scope of determining the strain before and after an eruptive phase at Mt. Etna Volcano (southern Italy) during 2004‐2006. In order to do so, we analyse the GNSS displacement data from Mt. Etna between 2004‐2005 and 2005‐2006 using the dedicated SSPX software. The extention, dilation and rotation maps of the study area were determined. The contraction and volumetric decrease concomitant the 2004‐2005 effusive eruptive period and extension and volumetric increase for the 2005‐2006 data series were observed. The deformation on the northeast part of Mt. Etna Volcano, which showed different characteristics with respect to its surroundings, was thought to be conditioned by the dynamic of the Pernicana fault system. Additionally, Complete Spherical Bouguer (CSB) gravity anomaly and the gravity gradient tensors were calculated giving insight on the subsurface structures of Mt. Etna Volcano and its surroundings.

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Kıbrıs Adası ve Çevresinde Depremlerin Zamansal ve Mekânsal Dağılımı: Jeoistatistiksel Bir Yaklaşım

ALEVKAYALI¹,

Dindar

2022

Yerbilimleri/Hacettepe Üniversitesi Yerbilimleri Uygulama Ve Araştırma Merkezi Dergisi

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Yer kabuğundaki ani hareketler sonucunda meydana gelen depremler ortaya çıktıkları bölgenin tektonizması ile ilişkilidir. Kıbrıs adası ve Kıbrıs Yayı; Afrika, Avrasya ve Arap levhalarının kesiştiği bölgede Alp-Himalaya Orojenez Kuşağı’nın bir üyesidir. Bundan dolayı Kıbrıs Adası ve çevresi sismik açıdan aktif bir bölgedir. Depremlerin sismik özellikleri ve mekânsal ilişkilerinin ortaya konulması o bölgedeki fay sisteminin ve tektonizmanın işleyişi hakkında bilgiler vermektedir. Bu çalışmanın amacı Kıbrıs Adası ve çevresinde depremlerin zamansal ve mekânsal dağılımını jeoistatistiksel yöntemlerle ortaya koyarak sismik aktivitenin fay hatları ile olan ilişkisinin açıklanmasıdır. Böylece Kıbrıs Adası ve çevresinde depremlerin mekânsal yoğunluğu Kernel yoğunluk fonksiyonundan yararlanılarak belirlenmiştir. Depremlerin mekânsal kümelenme özellikleri Anselin Yerel Moran’ın I ve Getis-Ord-Gi* Kümelenme Analizleri kullanılarak hesaplanmıştır. Ayrıca çalışma alanında depremlerin zamansal-mekânsal değişimleri, standart sapma elipsi, ortalama merkezi ve medyan merkezi hesaplanarak ortaya konulmuştur. Çalışmada elde edilen sonuçlar depremlerin Kıbrıs Yayı’nın batısında ve Kıbrıs Adasının güneybatısında yoğunlaştığını göstermiştir. Kıbrıs Adası ve çevresinde depremlerin mekânsal kümelenme özelliklerine bakıldığında kuzeybatıda küçük depremlerin, güneydoğuda ise büyük depremlerin kümelenme gösterdiği tespit edilmiştir. Kıbrıs Adası’nın güneyindeki depremlerin mekânsal yoğunluğu fazla olmasına rağmen bu bölgede küçük veya büyük depremlerin anlamlı bir kümelenmesi test edilememiştir. Son olarak bu çalışmada Kıbrıs Adası ve çevresinde gerçekleşen depremlerin yıllar arasında mekânsal ortalama ve ortanca merkezlerinin Kıbrıs Yayı boyunca doğu-batı yönlerinde yer değiştirdiği ortaya konulmuştur.

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Deformation Analysis of East Mediterranean with using SSPX software

Cited by 3 publications

References 8 publications

Analysis of gravity disturbance for boundary structures in the Aegean Sea and Western Anatolia

Analysis of gravity disturbance for boundary structures in the Aegean Sea and Western Anatolia

Exploring the Kinematic Structure of Mount Etna Volcano (Sicily, Italy) by Deformation Analysis and Gravity Gradient Tensors

Kıbrıs Adası ve Çevresinde Depremlerin Zamansal ve Mekânsal Dağılımı: Jeoistatistiksel Bir Yaklaşım

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