Results 21 to 30 of about 5,330 (213)

Analysis of Large Geomagnetically Induced Currents During the 7–8 September 2017 Storm: Geoelectric Field Mapping

open access: yesSpace Weather, 2023
High temporal and high spatial resolution geoelectric field models of two Mäntsälä, Finnish pipeline geomagnetically induced current (GIC) intervals that occurred within the 7–8 September 2017 geomagnetic storm have been made.
Anna Wawrzaszek   +4 more
doaj   +1 more source

Classification of Surface Geoelectric Arrays [PDF]

open access: yes, 2007
We have found in the geophysical literature more than ninety different surface geoelectric arrays, fulfilling an updated definition (specifying the current feeding, the potential difference measurement and the geometry of the electrodes).
Szalai, Sándor, Szarka, László Csaba
core   +1 more source

Analytic Calculation of Geoelectric Fields Due to Geomagnetic Disturbances: A Test Case

open access: yesIEEE Access, 2019
Geomagnetic field variations produce geoelectric fields that can affect the operation of technological networks at the Earth's surface, including power systems, pipelines, phone cables and railway circuits.
David H. Boteler   +2 more
doaj   +1 more source

Auxiliary Results of Collection and Classification of Surface Geoelectric Arrays [PDF]

open access: yes, 2007
Recently, we have made a classification of more than one hundred various surface geoelectric arrays ever published in geophysical literature (Szalai and Szarka 2007a, 2007b). The classification is based on three divalent parameters (as “superposition” of
Szalai, Sándor, Szarka, László Csaba
core   +1 more source

A 100‐year Geoelectric Hazard Analysis for the U.S. High‐Voltage Power Grid

open access: yesSpace Weather, 2020
A once‐per‐century geoelectric hazard map is created for the U.S. high‐voltage power grid. A statistical extrapolation from 31 years of magnetic field measurements is made by identifying 84 geomagnetic storms with the Kp and Dst indices.
G. M. Lucas   +4 more
doaj   +1 more source

Estimation of Geomagnetically Induced Currents in the Altai Republic Power System According to the Baygazan Magnetic Station Data

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2023
A geoelectric field, voltages between grounding points of the Altai Republic power grid and geomagnetically induced currents (GIC) in power lines and grounding nodes were calculated in homogeneously conducting Earth’s crust model with the resistivity of ...
Gvozdarev, A.Yu.   +3 more
doaj   +1 more source

Depth of Investigation of Dipole-dipole, Noncolinear and Focused Geoelectric Arrays [PDF]

open access: yes, 2007
Investigation depth of various DC geoelectric arrays has always been in the focus of interest of geoelectricians. According to its classical definition (Roy and Apparao 1971), the depth of investigation is the depth of the maximum response due to a ...
Novák, Attila   +2 more
core   +1 more source

Technological aspects of technogenic disturbance liquidation in the areas of coal-gas deposits development [PDF]

open access: yes, 2018
The objective of this work is to develop the technological measures for liquidation of technogenic disturbances that have arisen within the residential areas.
Cherniaiev, Oleksii   +4 more
core   +1 more source

Investigation of the characteristics of geoelectric field signals prior to earthquakes using adaptive STFT techniques [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2013
An earthquake is one of the most destructive natural disasters that can occur, often killing many people and causing large material losses. Hence, the ability to predict earthquakes may reduce the catastrophic effects caused by this phenomenon.
W. Astuti   +4 more
doaj   +1 more source

Energy and polarization of the telluric field in correlation with seismic activity in Greece

open access: yesAnnals of Geophysics, 2001
Many attempts have been made to disclose anomalous changes of the electromagnetic field in relation with tectonic earthquakes. We tentatively develop a new approach based on the energy and polarity of the electric field, and apply this method to the ...
G. N. Tsokas   +2 more
doaj   +1 more source

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