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V. V. Gordienko I. V. Gordienko I. M. Logvinov 《Izvestiya Physics of the Solid Earth》2007,43(4):290-296
The paper presents data on the distribution of the deep heat flow in Ukraine, thermal models of the tectonosphere, and electric conductors in the crust and mantle that are mostly related to partial melting and dehydration of rocks. 相似文献
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Studia Geophysica et Geodaetica - Magnetovariation methods, which are applicable to study the mantle conductivity, require long lasting registration of natural magnetic field variations. Such data... 相似文献
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The influence of inclusions of fluids, ore minerals, and graphite on the electric conductance of rocks of the consolidated crust is considered by using geoelectric investigations in the Ukraine as an example. The abundance of graphite and fluid inclusions is shown, and the anomalies associated with them are estimated. 相似文献
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Vladimir Yu. Semenov Josef Pek Antal Ádám Waldemar Jóźwiak Boris Ladanyvskyy Igor M. Logvinov Pavel Pushkarev Jan Vozar 《Acta Geophysica》2008,56(4):957-981
In the years 2001–2003, we accomplished the experimental phase of the project CEMES by collecting long-period magnetotelluric
data at positions of eleven permanent geomagnetic observatories situated within few hundreds kilometers along the south-west
margin of the East European Craton. Five teams were engaged in estimating independently the magnetotelluric responses by using
different data processing procedures. The conductance distributions at the depths of the upper mantle have been derived individually
beneath each observatory. By averaging the individual cross-sections, we have designed the final model of the geoelectrical
structure of the upper mantle beneath the CEMES region. The results indicate systematic trends in the deep electrical structure
of the two European tectonic plates and give evidence that the electrical structure of the upper mantle differs between the
East European Craton and the Phanerozoic plate of west Europe, with a separating transition zone that generally coincides
with the Trans-European Suture Zone. 相似文献
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Igor M. Logvinov 《Acta Geophysica》2015,63(5):1216-1230
The results of deep induction sounding in Ukraine made in the twenty-first century with the participation of the author have been summarized, including also a number of data obtained in the previous decades. The apparent resistivity and magnetic transfer function on the territories of western Ukraine and eastern Poland have been analyzed. The articulation of these data with the regional magnetic variation soundings allowed taking into account the influence of a static shift of areal interpretation of magnetotelluric resistivity results, which increased the reliability of interpretation. The analysis of induction sounding performed with 1D, 2D, and 3D inversions of magnetic transfer functions allowed localizing the crustal anomalies. The results are discussed. 相似文献
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Based on the analysis of the thermal history of the mantle, we hypothesize the existence of the partially molten layer at a depth of approximately 700–1100 km under the entire Earth's surface. We present the seismological data that are consistent with this hypothesis and the geoelectric results revealing the conductive layer at similar depths in Central and East Europe. 相似文献
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Svetlana Kováčiková Igor Logvinov Andriy Nazarevych Lesya Nazarevych Josef Pek Victor Tarasov Pavel Kalenda 《Studia Geophysica et Geodaetica》2016,60(2):280-296
We present results of a study of the seismicity and the geoelectric structure of the Eastern Carpathians. After the evaluation of the seismicity, new methods of processing and analyzing seismic data are developed, which allow constructing an averaged horizontal-layered velocity model of the crust in the Carpathian region of Ukraine, tracing the seismic active faults and localizing the seismic events both in horizontal and in vertical direction with a better precision. For the study of the conductivity structure beneath the Eastern Carpathians, the collected magnetovariation and magnetotelluric data are used. The depth of electrical conductivity anomalies are estimated and the resulting quasi-3D model of the conductivity structure beneath the Carpathians is compared with the seismicity in the depth range of 10 ± 2.5 km. The comparison suggests possible geological mechanisms: the seismic events occur mainly in resistive solid rock domains which surround aseismic high-conductivity zones, consisting of at least partially melted material. Aqueous fluids, or a joint effect of several mechanisms, may also play an active role in this distribution. 相似文献
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