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Geoelectrical fields in a layered earth with arbitrary anisotropy
Geophysics, 1999Abstract In many cases in geoelectrical exploration, the standard model of a layered isotropic half-space is a good approximation to geophysical reality. But sometimes it is useful to extend this model to uniform anisotropic layers.
Changchun Yin, Peter Weidelt
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The character of the geoelectric field observed with a long electrode span
Tectonophysics, 1990Abstract Observations of the geoelectric field with a long electrode span by making use of facilities of the Nippon Telegraph and Telephone Company (NTT) have been carried out in two areas. Mito and Numazu, since 1985. Observed geoelectric variations with periods longer than several hours are more reliable, because the contact potential of electrode ...
Hiromi Takayama, Toshio Mori
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Geoelectric Field Response to Seepage in Sand and Clay Formations
Journal of Hydrologic Engineering, 2019AbstractAn understanding of groundwater flow in soil and rocks is necessary for civil and environmental engineering. Real-time monitoring of groundwater flow is a relatively new research area.
Yong Liu, Chao Lü, Qiang Sun
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Change of a geoelectrical section under effect of elastic fields
Proceedings, 1996In the last years Russian scientists from Low-Volga institute of geology and geophysics (Saratov) made some experiments to study an influence of vibrating effect on electromagnetic soundings results. These works were perfumed to investigate a possibility to raise on this basis the geological efficiency of oil and gas deposits prospecting. On fig .1 the
B. S. Svetov +3 more
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Geoelectric field modeling for GIC risk assessment in Germany
2023The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)
Pick, L. +3 more
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Interdisciplinary study of ionospheric currents and associated geoelectric fields
2023The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)
Egbert, G. +5 more
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Estimation of the high amplitudes of the geoelectric field
The geoelectric field depends on the electrical structure of the ground and the time variations of the geomagnetic field, which become more intense during geomagnetic storms. We present a procedure for identifying the areas of higher amplitude of the geoelectric field and determining the orientation of the geomagnetic field needed to produce these ...Alex Marcuello +5 more
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Polar Cap May Have A Geoelectric Field
Physics Today, 1969During the period of high solar and geomagnetic activity in late May 1967 the Air Force satellite OV1-9 detected energetic proton fluxes coming up the magnetic field lines from the earth at high magnetic latitudes (λ⩾65–70 deg). Ludwig Katz and Paul L.
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Estimation of geoelectric field for validating geomagnetic disturbance modeling
2013 IEEE Power and Energy Conference at Illinois (PECI), 2013Geomagnetic induced currents (GICs) cause half cycle saturation of transformers and consequently increase the harmonic currents and reactive power in the grid. This paper focuses on the GIC modeling as an important geomagnetic disturbance (GMD) mitigation program.
M. Kazerooni +3 more
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The effect of mid-latitude electron precipitation on the geoelectric field
Journal of Atmospheric and Terrestrial Physics, 1988A simple model is outlined to describe electron precipitation from the population of charged particles trapped in the earth's magnetic field; almost all of the precipitation is shown to occur in the region of the South Atlantic Anomaly. When the effect of a dawn-to-dusk electric field across the magnetosphere is included in the model, a diurnal ...
W.R. Sheldon, J.R. Benbrook, G.J. Byrne
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