Results 51 to 60 of about 2,957 (186)

Space Weather Impact on the Scandinavian Interconnected Power Transmission System [PDF]

, 2015
Geomagnetic storms (GMS) can seriously affect high voltage transmission power grids. More specifically, GMS can inject geomagnetically induced currents (GICs) into the power network, thus causing instabilities and eventually leading to grid collapse ...
KRAUSMANN Elisabeth, PICCINELLI Roberta
core   +1 more source

Spectral content of Pc5–6/Pi3 geomagnetic pulsations and their efficiency in generation of geomagnetically induced currents

Russian Journal of Earth Sciences, 2022
ULF geomagnetic pulsations till recent time have been an underestimated factor of space weather hazard to technological systems. The efficiency of GIC generation by geomagnetic pulsations depends on frequency and spatial distribution of the pulsation’s ...
Sakharov Ya., Yagova Nadezda, Pilipenko Vyacheslav   +2 more
doaj   +1 more source

Daytime Ionospheric Density Enhancement Driven by Poleward Neutral Wind Shear Associated With Gravity Waves During the November 2025 Geomagnetic Storm

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract The threefold daytime electron density increases, along with strong poleward meridional winds exceeding 200 m/s were captured by Sanya Incoherent Scatter Radar (SYISR) during the geomagnetic storm of 12 November 2025. The great ionospheric enhancements were extending to mid‐latitudes over 40° observed by total electron content (TEC) from ...
Qi Jiang, Jiuhou Lei, Zhongli Li, Fuqing Huang, Rong Xia, Tong Dang, Xinan Yue, Xiaoli Luan   +7 more
wiley   +1 more source

Natural Convective Heat and Mass Transfer Flow in a Doubly Stratified High Porosity Medium

Engineering Reports, Volume 8, Issue 4, April 2026.
•$$ \bullet $$ Investigates natural convection of mass and heat in a high‐porosity doubly stratified medium. •$$ \bullet $$ Transforms non‐linear coupled partial differential equations into a non‐dimensional system for analysis. •$$ \bullet $$ Comprehensive analysis of stability and convergence criteria ensures solution accuracy. •$$ \bullet $$ Visuals
Abdullah Ahmed Foisal, Md. Mainul Islam, Muhammad Shakhawat Hossain, Silvia Sifath, Md. Azam Khan Muzahid, Md Akimul Islam Saikat   +5 more
wiley   +1 more source

Modeling GIC in the Southern South Island of Aotearoa New Zealand Using Magnetotelluric Data

Space Weather
Magnetotelluric (MT) impedances from 62 sites in southern South Island of Aotearoa New Zealand have been used to model geomagnetically induced currents (GIC) in four transformers during two solar storms.
K. M. Pratscher, M. Ingham, D. H. Mac Manus, M. Kruglyakov, W. Heise, C. J. Rodger, T. Divett, E. Bertrand, M. Dalzell, J. Brundell   +9 more
doaj   +1 more source

Validation of geomagnetically induced current modelling code [PDF]

, 2017
A paper by Horton et al. (2012) details a test grid containing 8 substations with 15 transformers connected by 15 lines. The paper gives detailed information about location, resistances and connections including features such as capacitors, delta and ...
Beggan, C.D., Richardson, G.S.
core  

Universal Time Influence on Stormtime Magnetosphere Ionosphere Coupling

AGU Advances, Volume 7, Issue 2, April 2026.
Abstract The offset between Earth's magnetic and rotational axes introduces a diurnal dependence in the high‐latitude EUV exposure of the northern hemisphere (NH) and southern hemisphere (SH). This variation raises the question: Does the Universal Time (UT) of geomagnetic storm onset impact its geospace consequences?
Kalpesh Ghag, William Lotko, Kevin Pham, Dong Lin, Viacheslav Merkin, Anil Raghav, Michael Wiltberger   +6 more
wiley   +1 more source

April 2000 geomagnetic storm: ionospheric drivers of large geomagnetically induced currents [PDF]

Annales Geophysicae, 2003
Geomagnetically induced currents (GIC) flowing in technological systems on the ground are a direct manifestation of space weather. Due to the proximity of very dynamic ionospheric current systems, GIC are of special interest at high latitudes ...
A. Pulkkinen, A. Thomson, E. Clarke, A. McKay   +3 more
doaj   +1 more source

Long Period Magnetotellurics (MT) using Geomagnetically Induced Currents in the Scottish Power Network [PDF]

, 2007
Geomagnetically Induced Currents (GIC) which 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. We use an electrical model of the power
McKay, Allan, Pulkkinen, Antti, Thomson, Alan   +2 more
core  

Understanding GIC in the UK and French high-voltage transmission systems during severe magnetic storms [PDF]

, 2017
The measurement and collection of digital magnetic field data in Europe extends back to the 1970s, providing over 30 years of data for the analysis of severe space weather.
A. Viljanen, A. W. P. Thomson, Amm, Beggan, Beggan, Boteler, C. D. Beggan, Erinmez, Erinmez, G. S. Kelly, Lehtinen, Pirjola, Pulkkinen, Radasky, Schulte in den Bümen, Siscoe, Thomson, Thomson, Torta, Tsurutani, Vasseur, Vasyliūnas, Viljanen, Viljanen, Viljanen, Viljanen, Ádám   +26 more
core   +1 more source