Geodynamic Model of the Northern Part of the Nizhnekansk Massif: Fault Tectonics, Deformations, and Insulation Properties of Rock Displacements

Гвишиани, А. Д.; Tatarinov, V. N.; Кафтан, В. И.; Manevich, A. I.; Minaev, V. A.; Ustinov, S. A.; Shevchuk, Roman

doi:10.1134/s1028334x22600608

Cited by 2 publications

(3 citation statements)

References 12 publications

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“…Вычислялись и анализировались так называемые «внутренние» смещения земной поверхности [Gvishiani et al, 2022], в понятиях классической механики, соответствующие внутренним силам, не зависимым от внешних сил.…”

Section: стратегия определения движенийunclassified

“…ЗЕМНОЙ КОРЫ Высокая сейсмическая активность в ограниченной области вызвала интерес к анализу такого предвестника их места, как наличие дефицита внутренних смещений земной коры. Эта характеристика, отражающая пространственную динамику изменения абсолютных значений смещений GPS-пунктов, изучается в лаборатории геодинамики Геофизического центра РАН в последние годы [Gvishiani et al, 2022]. Под дефицитом смещений подразумеваются области их минимальных значений, не превышающих или незначительно превышающих точность их определения.…”

Section: анализ дефицита внутренних смещенийunclassified

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Deformation Interaction of Strong Earthquakes of 2010–2016 in the Zone of Influence of the Hikuranga Superplume (New Zealand) According to GPS Observations

Kaftan,

Dokukin,

Manevich

et al. 2024

Geodin. tektonofiz.

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Between 2010 and 2016, a series of 11 strong M>6 earthquakes occurred in New Zealand. In the area covering the epicentral zones of these seismic events, the spatiotemporal characteristics of movements and deformations of the Earth’s crust were obtained based on the processing of continuous satellite GPS observations at 64 points of the geodetic network. Using these data, we have studied the evolution of horizontal movements and deformations in order to reveal the possible relationship between the observed deformational and seismic processes. Analysis has been made on the total shear deformation, since the main tectonic structures of the region are faults with a shear mechanism of displacement of their sides. The presence of a giant mantle superplume in the area was the reason for the study of the behavior of horizontal dilatation deformation, and horizontal and vertical crustal motions. Based on the obtained digital deformation models, there were created kinematic visualizations, which are synoptic animations providing direct observations of the seismic deformation process and their heuristic analysis. The study revealed that a series of the strongest earthquakes may be interconnected by a long-term single deformation process, which is caused by the occurrence of an anomalous total shear deformation. The general maximum of shear deformation, dilatation deformation, and horizontal and vertical displacements are concentrated in the center of mantle superplume activity. Prior to strong seismic events, there occur zones of deficit (minimum) displacements of the Earth’s crust in the area of future epicenters, which is of research interest in terms of predicting their locations.

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Section: стратегия определения движенийunclassified

Section: анализ дефицита внутренних смещенийunclassified

Deformation Interaction of Strong Earthquakes of 2010–2016 in the Zone of Influence of the Hikuranga Superplume (New Zealand) According to GPS Observations

Kaftan,

Dokukin,

Manevich

et al. 2024

Geodin. tektonofiz.

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“…In this case, more indicative characteristics of the movements are the displacements of points, presented in the local (internal) reference system, which well reflect the mutual multidirectional movements of the sides of local faults. The rationale for this approach is presented in [Gvishiani et al, 2022]. Such a local (internal) displacement reference system can be easily obtained by subtracting from each displacement U j in the global reference system the average value U , which characterizes the trend of global tectonics common to all network points, for each epoch measurements.…”

Section: Analysis Of Internal Movements and Deformations Of The Earth...mentioning

confidence: 99%

Co- and Pre-Seismic Crustal Deformations Related to Large Earthquakes Between Years of 2009 and 2023 Using Continuous CORS-TR GNSS Observations in the Anatolian Diagonal (Turkey)

Dokukin,

Guvenaltin,

Kaftan

et al. 2023

Russian Journal of Earth Sciences

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Synoptic animations of internal displacements and deformations of the earth's crust were obtained based on the results of continuous GNSS observations in Eastern Anatolia from 2009 to 2023. The spatiotemporal patterns of the seismic deformation process in connection with the tectonics of the region have been identified. It is shown that dilatation and total shear strains evolve in concert with the migration of the strongest earthquakes Elazig, Elazig-Malatya and devastate Karamanmaraş series. Two years before the occurrence of the devastating earthquakes of 2023, a deficit of internal displacements of GNSS stations developed in the area of their epicenters. The conducted research suggests that the strongest events of 2009-2023 are connected by a unitary seismic deformation process. The most important action in this case is the SW movement of the Anatolian block as monolithic element. In the development of movements and deformations, a flow of increasing stresses is observed in the direction from Karliova Triple Junction to the SW to the area of the strongest seismic events on 02.2023. It originates east of the Karliova Triple Junction where the Arabian Plate encounters an obstacle. The role of mantle flows in the seismic process is assessed

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Geodynamic Model of the Northern Part of the Nizhnekansk Massif: Fault Tectonics, Deformations, and Insulation Properties of Rock Displacements

Cited by 2 publications

References 12 publications

Deformation Interaction of Strong Earthquakes of 2010–2016 in the Zone of Influence of the Hikuranga Superplume (New Zealand) According to GPS Observations

Deformation Interaction of Strong Earthquakes of 2010–2016 in the Zone of Influence of the Hikuranga Superplume (New Zealand) According to GPS Observations

Co- and Pre-Seismic Crustal Deformations Related to Large Earthquakes Between Years of 2009 and 2023 Using Continuous CORS-TR GNSS Observations in the Anatolian Diagonal (Turkey)

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