[Text] : статья / V. A. Kochnev [et al.] // Geomodel 2012 - 14th Scientific-Practical Conference on the Problems of Integrated Interpretation of Geological and Geophysical Data During Geological Modeling of Hydrocarbons' Deposits. - 2012
Аннотация: The use of gravity data to estimate parameters and to determine near-surface static corrections is becoming more popular. Of particular importance is the application of this method at the Siberian platform, where amplitudes of the structures are small, and the influence of strong near-surface inhomogeneities greatly distorts the wave pattern. We offer a technology of co-processing and interpretation of seismic and gravity data. The technology is based on the adaptive methods for inverse problems of gravimetry and magnetometry, implemented in packages ADG-3D and the ADM-3D, as well as existing seismic data processing packages.
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Доп.точки доступа:
Kochnev, V.A.; Кочнев, Владимир Алексеевич; Goz, I.V.; Гоз, Илья Владимирович; Polyakov, V.; Myachev, S.; Pospeeva, N.; Nifontov, I.; 14th Scientific-Practical Conference on the Problems of Integrated Interpretation of Geological and Geophysical Data During Geological Modeling of Hydrocarbons' Deposits, Geomodel 2012 (2012 ; 10.09 - 14.09 ; Gelendzhik)
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Найдено документов в текущей БД: 3
Application of the technology of estimation of density, velocity, and statics corrections from gravimetric data in seismic data processing in Eastern
Configuration of sources of earth’s magnetic field obtained by solving inverse magnetometry problem
/ V. A. Kochnev // International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM : International Multidisciplinary Scientific Geoconference, 2018. - Vol. 18: 18th International Multidisciplinary Scientific Geoconference, SGEM 2018 (2 July 2018 through 8 July 2018, ) Conference code: 142901, Is. 6.1. - P553-560, DOI 10.5593/sgem2018/6.1/S28.073
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Кл.слова (ненормированные):
Earth’s core -- Earth’s magnetic field -- Effective magnetization -- Inverse problem of magnetometry -- Volumetric currents -- Magnetic fields -- Magnetic moments -- Magnetization -- Magnetometers -- Magnetometry -- Problem solving -- Tidal power -- Adaptive methods -- Effective magnetizations -- Geocentric coordinates -- Potential sources -- South Atlantic -- Surface anomalies -- Unknown values -- Volumetric currents -- Inverse problems
Аннотация: Sources of magnetic field are often approximated by dipoles or current loops, however it this work they are approximated by magnetized prisms instead, which is possible due to equivalency between magnetized objects and currents. Distribution of effective magnetization is then obtained by solving inverse magnetometry problem using the adaptive method of refining the unknown values based on discrepancy between initial values and model values. Z-components of Earth’s magnetic field in IGRF-2005 model in geocentric coordinate system are used as initial values. This allows obtaining the distribution of volumetric currents and magnetic moments for the Earth’s core, which is found to be significantly asymmetric, with four major anomalies, corresponding to surface anomalies: Australian, Canadian, South-Atlantic and Siberian. Work contains additional analysis of the model, initial values and features of the used method in relation to obtained result. Potential source of energy maintaining the currents is suggested, in form of tidal forces, caused by the gravitational influence of the Moon and the Sun. © 2018, International Multidisciplinary Scientific Geoconference. All rights reserved.
Scopus,
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Держатели документа:
Institute of Computational Modelling of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Kochnev, V. A.
Кл.слова (ненормированные):
Earth’s core -- Earth’s magnetic field -- Effective magnetization -- Inverse problem of magnetometry -- Volumetric currents -- Magnetic fields -- Magnetic moments -- Magnetization -- Magnetometers -- Magnetometry -- Problem solving -- Tidal power -- Adaptive methods -- Effective magnetizations -- Geocentric coordinates -- Potential sources -- South Atlantic -- Surface anomalies -- Unknown values -- Volumetric currents -- Inverse problems
Аннотация: Sources of magnetic field are often approximated by dipoles or current loops, however it this work they are approximated by magnetized prisms instead, which is possible due to equivalency between magnetized objects and currents. Distribution of effective magnetization is then obtained by solving inverse magnetometry problem using the adaptive method of refining the unknown values based on discrepancy between initial values and model values. Z-components of Earth’s magnetic field in IGRF-2005 model in geocentric coordinate system are used as initial values. This allows obtaining the distribution of volumetric currents and magnetic moments for the Earth’s core, which is found to be significantly asymmetric, with four major anomalies, corresponding to surface anomalies: Australian, Canadian, South-Atlantic and Siberian. Work contains additional analysis of the model, initial values and features of the used method in relation to obtained result. Potential source of energy maintaining the currents is suggested, in form of tidal forces, caused by the gravitational influence of the Moon and the Sun. © 2018, International Multidisciplinary Scientific Geoconference. All rights reserved.
Scopus,
Смотреть статью
Держатели документа:
Institute of Computational Modelling of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Kochnev, V. A.
Distribution of Sources of Magnetic Field in the Earth's Core Obtained by Solving Inverse Magnetometry Problem
/ V. Kochnev ; ed.: D. . Nurgaliev, N. . Khairullina // PRACTICAL AND THEORETICAL ASPECTS OF GEOLOGICAL INTERPRETATION OF : SPRINGER INTERNATIONAL PUBLISHING AG, 2019. - 45th Uspensky International Geophysical Seminar (MAR 12-16, 2018, Kazan, RUSSIA). - P285-291. - (Springer Proceedings in Earth and Environmental Sciences), DOI 10.1007/978-3-319-97670-9_33. - Cited References:13
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Кл.слова (ненормированные):
Magnetic field of earth -- Effective magnetization -- Inverse magnetometry -- problem volumetric currents -- Geodynamo
Аннотация: The purpose of this work is to create a model of sources of Earth's magnetic field. Main magnetic field in IGRF-2005 model is used as initial condition for solving inverse magnetometry problem using adaptive method of solving systems of equations. Distributions of effective magnetization, magnetic moments and volumetric currents in the Earth's core, consistent with observed magnetic field, are obtained.
WOS,
Смотреть статью
Держатели документа:
RAS, Inst Computat Modeling SB, Krasnoyarsk, Russia.
Доп.точки доступа:
Kochnev, V.; Nurgaliev, D... \ed.\; Khairullina, N... \ed.\
Кл.слова (ненормированные):
Magnetic field of earth -- Effective magnetization -- Inverse magnetometry -- problem volumetric currents -- Geodynamo
Аннотация: The purpose of this work is to create a model of sources of Earth's magnetic field. Main magnetic field in IGRF-2005 model is used as initial condition for solving inverse magnetometry problem using adaptive method of solving systems of equations. Distributions of effective magnetization, magnetic moments and volumetric currents in the Earth's core, consistent with observed magnetic field, are obtained.
WOS,
Смотреть статью
Держатели документа:
RAS, Inst Computat Modeling SB, Krasnoyarsk, Russia.
Доп.точки доступа:
Kochnev, V.; Nurgaliev, D... \ed.\; Khairullina, N... \ed.\