Geodynamics

Оrlyuk, М.І.; Marchenko, O. V.; Ivashchenko, I. N.

doi:10.23939/jgd2014.01.096

Cited by 3 publications

References 10 publications

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Structure and geodynamics of the lithosphere of the oil and gas-bearing and ore regions of Ukraine according to the latest geological and geophysical data

Murovska,

Stovba,

Verpakhovska

et al. 2024

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Scientific review of the latest author’s works on tectonics and geodynamics of the territory of Ukraine, as well as its connection with the localization of mineral deposits, is presented. The structure and evolution of lithosphere of the Carpathian and Black Sea segments of Ukraine, the Dnieper-Donetsk Basin, Donbass Foldbelt and Ukrainian Shield has been reconstructed based on the interpretation of regional deep sounding (DSS) and reflection (CDP) seismic profiles, the geomagnetic field data, geological-structural mapping, paleotectonic, numerical modeling, paleogeographical and palinspastic reconstructions. When interpreting the DSS profiles, the classic velocity models are supplemented with seismic images obtained by the original finite-difference reflection/refraction migration method. The monograph included scientific study carried out at the S.I. Subbotin Institute of Geophysics of the National Academy of Sciences of Ukraine with the involvement of seismic and related geophysical data obtained as a result of conducting and interpreting regional wide-angle seismic profiles (WARR): DOBRE’99, PANCAKE and RomUkrSeis. Geological interpretation of reflection seismic profiles of the Ukrainian sector of the Black Sea, paleogeographical and palinspastic reconstructions contributed to the study of the evolution of the entire Black Sea region. The geological evolution of the Ukrainian Carpathians is reconstructed on the basis of updated data on stratigraphy, tectonics, lithology and sedimentology and palinspastic reconstructions. The structure and development of the DDB sedimentary cover was revealed by seismogeological sections along numerous reflection (CDP) seismic profiles. The tectonics of the Precambrian Ukrainian Shield, including the Kryvyi Rih-Kremenchug and Golovanivsk suture zones, were studed by geomagnetic field analysis and detailed geological and structural mapping.

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Structure and geodynamics of the lithosphere of the oil and gas-bearing and ore regions of Ukraine according to the latest geological and geophysical data

Murovska,

Stovba,

Verpakhovska

et al. 2024

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Comparative Analysis of Geomagnetic Disturbances in the Odessa Magnetic Anomaly Area in the 24th Solar Activity Cycle

Ryabov

Sukharev

Оrlyuk

et al. 2019

Radio phys. radio astron.

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Предмет и цель работы: Изучаются основные периоды колебаний уровня возмущенности геомагнитного поля в зоне Одесской магнитной аномалии по данным наблюдений в геомагнитной обсерватории "Одесса" в 24-м цикле солнечной активности. Целью работы является поиск различий и подобия в проявлении и свойствах кратковременных и долговременных геомагнитных квазипериодических колебаний в условиях аномального в геомагнитной обсерватории "Одесса" и слабоаномального в геомагнитной обсерватории "Киев" геомагнитного поля. Методы и методология: Использовались данные цифровых магнитометров с высоким временным разрешением. Поиск периодов колебаний выполнялся с помощью быстрого непрерывного вейвлет-преобразования и кратковременного фурье-преобразования (STFT). Для выделения и последующего раздельного анализа колебаний, соответствующих разным периодам и спектральным областям, применялась полосовая фурье-фильтрация.

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Development of Algorithms and Software Components of Quasi-Stationary Magnetic Fields Modeling

2018

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The magnetometric section of the marine areas geophysics is characterized by the transition to a qualitatively new level of research, pipeline tracing, search for sunken ships, aerial bombs and unexploded ordnance, study of sunken objects of cultural heritage, identification of such sunken objects (inverse magnetometry problem), etc. The identification of such objects is called the inverse problem of marine magnetometry, and it belongs to the class of incorrectly posed task. The first step in solving this task is to find solution of the direct problem. A direct problem is to determine the anomalous field created by objects of a certain shape, density under certain conditions of immersion and accumulation of information about these objects. Problems of determining the anomalous field of a thin-walled objects are of particular interest. The solution to this problem is largely determined by the existence of an effective system of programs for solving three-dimensional direct magnetometry problems – finding the fields of typical objects (by using sets of such objects you can approximate real objects). The article describes the operation of the main algorithm and subroutines that are part of the main algorithm of the developed MBEM software for modeling the magnetic fields of thin-walled structures. MBEM is based on the developed modified boundary element method, based on the classical boundary element method and the secondary source method. Numerical verification has been carried out and the efficiency of the developed algorithms and software components has been established on the problems of calculating the magnetic field of thin-walled structures for which solutions are known. The example of the software complex work is given – the calculation of the resulting field of a thin-walled pipe, namely the simulation of the tension vector in the plane that is under the object at a distance of one half meter.

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Geodynamics

Abstract: ПРЕДИСЛОВИЕ «The time is out of joint: O cursed spite, That ever I was born to set it right! Nay, come, let's go together». W. Shakespeare. Hamlet «Порвалась дней связующая нить.

Cited by 3 publications

References 10 publications

Structure and geodynamics of the lithosphere of the oil and gas-bearing and ore regions of Ukraine according to the latest geological and geophysical data

Structure and geodynamics of the lithosphere of the oil and gas-bearing and ore regions of Ukraine according to the latest geological and geophysical data

Comparative Analysis of Geomagnetic Disturbances in the Odessa Magnetic Anomaly Area in the 24th Solar Activity Cycle

Development of Algorithms and Software Components of Quasi-Stationary Magnetic Fields Modeling

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