Results 81 to 90 of about 1,817,388 (196)

Regional-Scale High-Latitude Extreme Geoelectric Fields Pertaining to Geomagnetically Induced Currents

, 2015
Motivated by the needs of the high-voltage power transmission industry, we use data from the high-latitude IMAGE magnetometer array to study characteristics of extreme geoelectric fields at regional scales. We use 10-s resolution data for years 1993-2013,
Pulkkinen, Antti, Ngwira, Chigomezyo, Viljanen, Ari, Eichner, Jan, Bernabeu, Emanuel   +4 more
core  

Geoelectric Field Estimations During Geomagnetic Storm in North China From SinoProbe Magnetotelluric Impedances

Space Weather
Evaluating the impact of geomagnetic disturbances on power grid infrastructure is critical to mitigate the risk posed by geomagnetically induced currents (GICs).
Qihe Shao, Ying Liu, Yinhe Luo, Graham Heinson, Yixian Xu, Jinsong Du, Chao Chen   +6 more
doaj   +1 more source

Recent geomagnetic storms observed by Macau Science Satellite-1

Earth and Planetary Physics
Geomagnetic storms are rapid disturbances of the Earth’s magnetosphere. They are related to many geophysical phenomena and have large influences on human activities.
Qing Yan, HongBo Yao
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., Whaler, K. A.; id_orcid, McKay, Allan, Whaler, K.A.   +3 more
core   +1 more source

A Novel Approach for Evaluating GIC Impacts in the Swedish Power Grid

Space Weather
The dynamic behavior of the Sun and its interaction with the magnetosphere and ionosphere can cause rapid variations in the geomagnetic field at ground level, geomagnetically induced currents (GICs) flowing through long grounded conductors.
L. Rosenqvist, A. Johlander, S. Molenkamp, A. P. Dimmock, J. Setréus, V. Lanabere   +5 more
doaj   +1 more source

Effects of Lateral Conductivity Variations on Geomagnetically Induced Currents: H-Polarization

IEEE Access, 2019
H-polarization, along with E-polarization, indicates the lateral variations of the Earth conductivity, which influence the induced electric field distribution.
Chunming Liu, Xuan Wang, Shuming Zhang, Chunze Xie   +3 more
doaj   +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

Mid‐Latitude Geoelectric Field Response in North China During the May 2024 Superstorm: Effects of Geological Heterogeneity

Space Weather
Geoelectric field disturbances during geomagnetic storms pose growing risks to mid‐latitude power systems, yet direct observations remain limited.
Fangyuan Ma, Hui Wang, Yonglin Tan, Yingdu Huang, Hongwei Xia, Darcy Cordell   +5 more
doaj   +1 more source

The Development of Models for Assessment of the Geomagnetically Induced Currents Impact on Electric Power Grids during Geomagnetic Storms

Advances in Electrical and Computer Engineering, 2015
A model and an algorithm for the calculation of the functioning of an electric power grid of arbitrary configuration and complexity during geomagnetic storms were developed.
VAKHNINA, V. V., KUVSHINOV, A. A., SHAPOVALOV, V. A., CHERNENKO, A. N., KRETOV, D. A.   +4 more
doaj   +1 more source

Dataset for: Comparison of Geoelectric Fields Computed by the Complex Image, Magnetotelluric, and Finite-Difference Time-Domain Methods

This is data set of the geomagnetic and geoelectric fields obtained from the three methods: Complex Image, Magnetotelluric, and Finite-Difference Time-Domain Methods in time and along the space.
Sharma Paneru, Prashanna
core   +1 more source