Results 21 to 30 of about 7,095,631 (100)
Geomatics, Natural Hazards & Risk, 2023 This paper reports three methods of researching the geoelectric index (GEI) based on the ratio between the variation amplitude of geoelectric field on an index calculation day and that on a magnetically quiet day, and uses the three methods to process ...
Junsong Sun +4 more
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Depth of Investigation of Dipole-dipole, Noncolinear and Focused Geoelectric Arrays [PDF]
, 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 ...
Szarka, László Csaba +2 more
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Towards GIC forecasting : Statistical downscaling of the geomagnetic field to improve geoelectric field forecasts [PDF]
, 2022 Geomagnetically induced currents (GICs) are an impact of space weather that can occur during periods of enhanced geomagnetic activity. GICs can enter into electrical power grids through earthed conductors, potentially causing network collapse through ...
Barnard, Luke +6 more
core +4 more sources
Space Weather, 2021 Estimating the effect of geomagnetic disturbances on power grid infrastructure is an important problem since they can induce damaging currents in electric power transmission lines. In this study, an array of magnetotelluric (MT) impedance measurements in
Darcy Cordell +5 more
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Modelling the effects of space weather at the Earth’s surface : a UK geoelectric field model [PDF]
, 2004 Geomagnetically Induced Currents (GIC), which can flow in technological systems such as power transmission grids, are a consequence of the geoelectric field induced at the surface of the Earth during geomagnetic storms.
Thomson, Alan +3 more
core +4 more sources
Analytic Calculation of Geoelectric Fields Due to Geomagnetic Disturbances: A Test Case
IEEE 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
A 100‐year Geoelectric Hazard Analysis for the U.S. High‐Voltage Power Grid
Space 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
The electric field in northern England and southern Scotland: implications for geomagnetically induced currents. [PDF]
, 2006 Magnetotelluric (MT) data, in the form of MT tensors, are used to estimate directly the size and spatial distribution of the electric field in northern England and southern Scotland with the aim of predicting the flow of geomagnetically induced currents ...
McKay, A. J. +3 more
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Geomagnetic (NGK, EYR) and Geoelectric (NGK) Field Measurements
, 2022 The Niemegk (NGK) geomagnetic and geoelectric field measurements were provided by Juergen Matzka GFZ German Research Centre for Geosciences, Potsdam, Germany. The original Eyrewell (EYR) geomagnetic field measurements were provided by Tanja Petersen (GNS
Hartinger, Michael +3 more
core +1 more source
Vestnik 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