Results 21 to 30 of about 2,646 (221)
Magnetotelluric Sampling and Geoelectric Hazard Estimation: Are National‐Scale Surveys Sufficient?
Space Weather, 2021 At present, the most reliable information for inferring storm‐time ground electric fields along electrical transmission lines comes from coarsely sampled, national‐scale magnetotelluric (MT) data sets, such as that provided by the EarthScope USArray ...
Benjamin S. Murphy +5 more
doaj +1 more source
Space Weather, 2022 A study is made of the relations between geomagnetic and geoelectric field variation, Earth‐surface impedance, and operational interference (“anomalies”) experienced on electric‐power systems across the contiguous United States during the 13–14 March ...
Jeffrey J. Love +5 more
doaj +1 more source
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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An investigation of the basement complex aquifer system in Lofa county, Liberia, for the purpose of siting boreholes [PDF]
, 2014 Liberia is recovering from a 14 year civil war and only 51% of the rural population has access to safe drinking water. Little hydrogeological knowledge survives in Liberia, increasing the difficulty in successfully siting new boreholes.
Elster, D. +3 more
core +1 more source
Technological aspects of technogenic disturbance liquidation in the areas of coal-gas deposits development [PDF]
, 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
Deep crustal geoelectric structure beneath the Northumberland Basin [PDF]
, 1986 In terms of lateral variations in conductivity structure, the southern Southern Uplands and Northumberland Basin are characterized by a region of attenuated vertical magnetic fields with small spatial gradients reflecting the presence of a substantial ...
Beamish, David
core +1 more source
Fast computation of the geoelectric field using the method of elementary current systems and planar Earth models [PDF]
, 2004 International audienceThe method of spherical elementary current systems provides an accurate modelling of the horizontal component of the geomagnetic variation field.
A. Pulkkinen +5 more
core +3 more sources
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
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
Geomatics, Natural Hazards and Risk, 2023 AbstractThis 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 the observation data of 18 geoelectric stations in China in September 2017.
Junsong Sun +4 more
openaire +2 more sources