Results 21 to 30 of about 2,994 (242)
Space 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
Influences of various magnetospheric and ionospheric current systems on geomagnetically induced currents around the world [PDF]
, 2017 Ground-based observations of geomagnetic field (B field) are usually a superposition of signatures from different source current systems in the magnetosphere and ionosphere.
Amm +65 more
core +1 more source
Extreme geomagnetically induced currents
Progress in Earth and Planetary Science, 2016 We propose an emergency alert framework for geomagnetically induced currents (GICs), based on the empirically extreme values and theoretical upper limits of the solar wind parameters and of dB/dt, the time derivative of magnetic field variations at ground. We expect this framework to be useful for preparing against extreme events. Our analysis is based
Ryuho Kataoka, Chigomezyo Ngwira
openaire +1 more source
Journal of Space Weather and Space Climate, 2015 Previous studies have demonstrated a close relationship between the time derivative of the horizontal geomagnetic field vector (dH/dt) and geomagnetically induced currents (GIC) at a nearby location in a power grid.
Viljanen Ari, Wintoft Peter, Wik Magnus
doaj +1 more source
Improving the modeling of geomagnetically induced currents in Spain [PDF]
, 2018 Vulnerability assessments of the risk posed by geomagnetically induced currents (GICs) to power transmission grids benefit from accurate knowledge of the geomagnetic field variations at each node of the grid, the Earth's geoelectrical structures beneath ...
Campanyà, Joan +5 more
core +1 more source
Geophysical Monograph Series, Page i-xiv., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
wiley +1 more source
South African Journal of Science, 2019 Geomagnetic storms are space weather events that result in a temporary disturbance of the earth’s magnetosphere caused by a solar wind that interacts with the earth’s magnetic field.
Emmanuel Nahayo +3 more
doaj +1 more source
HV Transformer Protection and Stabilization under Geomagnetically Induced Currents
Energies, 2020 This paper presents the results of research related to the issues arising from DC excitation of power transformers due to geomagnetically induced currents (GIC). First, the GIC phenomena and their influence on power system operation are discussed.
Daniel Bejmert +3 more
doaj +1 more source
Sensitivity of geomagnetically induced currents to varying auroral electrojet and conductivity models [PDF]
, 2015 Geomagnetically induced currents (GIC) are created by the interaction of rapid changes in the magnitude of the magnetic field with the conductive subsurface of the Earth.
Beggan, Ciaran D.
core +1 more source
Advances in Mechanical Engineering, 2017 Geomagnetically induced currents through the transformer windings produce biases of transformers, increase transformer reactive power losses, and lead to a significant lack of reactive power support in the power system.
Pei-Hong Yang +4 more
doaj +1 more source