Results 51 to 60 of about 2,928 (232)
Modelling geomagnetically induced currents in midlatitude Central Europe using a thin-sheet approach [PDF]
, 2017 Geomagnetically induced currents (GICs) in power systems, which can lead to transformer damage over the short and the long term, are a result of space weather events and geomagnetic variations. For a long time, only high-latitude areas were considered to
Achleitner, Georg +8 more
core +7 more sources
IEEE Access, 2020 Geomagnetically induced current (GIC) has been a significant concern for the electrical power grid in high latitudes for decades. Its origin starts in the Sun; during extreme space weather, the magnetic field of the Earth varies rapidly.
Zmnako Mohammed Khurshid Abda +3 more
doaj +1 more source
Forward modeling of magnetotellurics using Comsol Multiphysics
Applied Computing and Geosciences, 2021 Magnetotellurics is an electromagnetic geophysical method that has been widely used to study structures in Earth's subsurface. Numerical modeling of magnetotellurics is important for survey design, inversion, geological interpretation and many other ...
A. Li, S.L. Butler
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
The First Archaeomagnetic Age at Tiwanaku and Implications for Dating Andean Metallurgical Furnaces
Archaeometry, EarlyView.ABSTRACT This paper presents the first archaeomagnetic dating at Tiwanaku (Andean Altiplano). We compared the geomagnetic field values recorded by a metallurgical furnace against an updated SHAWQ2k‐SH global model and a regional intensity curve, both of which include, for the first time, high‐quality intensity data from the Southern Hemisphere. Results
Judit del Río +6 more
wiley +1 more source
Applying inversion techniques to derive source currents and geoelectric fields for geomagnetically induced current calculations [PDF]
Annales Geophysicae, 2014 This research focuses on the inversion of geomagnetic variation field measurement to obtain source currents in the ionosphere. During a geomagnetic disturbance, the ionospheric currents create magnetic field variations that induce geoelectric fields ...
J. S. de Villiers, P. J. Cilliers
doaj +1 more source
A 3-Phase Current Transducer based on microfluxgate sensors [PDF]
, 2019 Novel 3-phase DC/AC current transducer for 3-phase current lines is based on 8 integrated fluxgate sensors. Using full information from each sensor rather than gradiometric pairs, we suppress crosstalk between individual phases and external magnetic ...
Chirtsov A., Grim V., Ripka P.
core +1 more source
Geomagnetically induced currents in Europe
Journal of Space Weather and Space Climate, 2014 Statistics of geomagnetically induced currents (GIC) in the European high-voltage power grids based on 1-min geomagnetic recordings in 1996–2008 and on 1-D models of the ground conductivity have been derived in the EURISGIC project (European Risk from Geomagnetically Induced Currents).
Ari Viljanen +4 more
openaire +2 more sources
A supramolecular assembly of cone‐specific G‐protein and cryptochrome 4a on lipid bilayer
The FEBS Journal, EarlyView.Immobilized phospholipid bilayers on a sensor chip surface serve as membrane platform to investigate critical protein–lipid and protein–protein interaction processes by surface plasmon resonance. The putative magnetoreceptor cryptochrome 4a and the myristoylated cone‐specific G‐protein α‐subunit (Gtα) bind with high affinity to immobilized lipid ...
Ümmügülsüm Güzelsoy‐Flügge +3 more
wiley +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