Results 61 to 70 of about 3,583,049 (117)

The New Geomagnetic Monitoring Network in China: Insights From the 2024 Mother's Day Superstorm

open access: yesSpace Weather
China has established a ground‐based network system, that is the Chinese Meridian Project (CMP), to continuously monitor the geomagnetic field. The superstorm in May 2024 was analyzed using the CMP data.
Jing Wang   +12 more
doaj   +1 more source

Calculation of GIC in the North Island of New Zealand Using MT Data and Thin‐Sheet Modeling

open access: yesSpace Weather, 2020
Geomagnetically induced currents (GICs) in the North Island New Zealand power transmission network during two large magnetic storms are calculated from both magnetotelluric (MT) data and a thin‐sheet conductance model of New Zealand previously used to ...
K. Mukhtar   +8 more
doaj   +1 more source

Contrasting Space Weather Drivers of Two Geomagnetically Induced Current Events in Alberta, Canada During the May 2024 Superstorm

open access: yesSpace Weather, Volume 24, Issue 7, July 2026.
Abstract Strong geomagnetic disturbances (GMDs) caused by intense space storms induce geomagnetically induced currents (GICs) in the Earth and within long conductive infrastructure, potentially posing risks to electricity transmission systems. Here, we investigate the solar wind conditions and magnetospheric processes responsible for two significant ...
Hannah G. Parry   +4 more
wiley   +1 more source

Application of Deep Learning and Explainable AI to NIR Auroral Detection in Satellite Time‐Series Images

open access: yesSpace Weather, Volume 24, Issue 7, July 2026.
Abstract In this study, we employ a deep learning approach to detect auroras from near‐infrared (NIR) sequential images captured by the satellite‐based imager, the Enhanced Polar Outflow Probe (e‐POP)/Fast Auroral Imager (FAI). We also apply the Eigen‐Class Activation Map (Eigen‐CAM), an explainable AI technique in a broad sense, as a post‐hoc ...
Junmu Youn   +7 more
wiley   +1 more source

Estimating the Geomagnetically Induced Currents in the 1,000 kV Power Grid Over North China During the May 2024 Geomagnetic Storm: Accounting for Anisotropic Earth Conductivity

open access: yesSpace Weather, Volume 24, Issue 7, July 2026.
Abstract Geomagnetically induced currents (GICs) pose a significant threat to the safe and stable operation of power systems, making accurate risk assessment under extreme geomagnetic storm conditions essential. This study focuses on the mid‐latitude North China power grid and estimates substation GICs in the 1,000 kV network during the geomagnetic ...
Xuejian Zhang   +8 more
wiley   +1 more source

The Relationship Between the Magnetometer Data Derived GIC Index and Measured GIC in High Voltage Transformers in Australia

open access: yesSpace Weather
Geomagnetically induced currents (GICs) are telluric currents driven by space weather that can adversely impact high voltage transformers in electricity supply networks.
C. L. Waters, R. A. Marshall
doaj   +1 more source

Analysis of Long‐Term GIC Measurements in Transformers in Austria

open access: yesSpace Weather, 2022
Geomagnetically induced currents (GICs), a result of solar wind interaction with the Earth's magnetic field and the resistive ground, are known to flow in power transmission grids, where they can lead to transformer damage and grid operation problems. In
D. Albert   +4 more
doaj   +1 more source

Simulation of GIC in the North Island of Aotearoa New Zealand Based on Magnetotelluric Measurements

open access: yesSpace Weather, Volume 24, Issue 7, July 2026.
Abstract New magnetotelluric (MT) data, combined with older MT data are used to simulate geomagnetically induced currents (GIC) in the power network of the North Island of Aotearoa New Zealand for two geomagnetic storms. For the May 2024 G5 Gannon Storm, simulations use magnetic field data from two separate locations—the Intermagnet geomagnetic ...
K. M. Pratscher   +6 more
wiley   +1 more source

Power Transformer Immune to Geomagnetically Induced Currents

open access: yes, 2013
Geomagnetically induced currents (GICs) flow mainly through power lines, earthed transformers and earth itself. The near DC currents may cause half-cycle saturation of transformers, possibly causing relay misoperation, increased reactive power demand and
Lund University., Samuelsson, Olof,
core   +2 more sources

Large, Long‐Lasting Mid‐Latitude Geomagnetically Induced Currents During a Moderate Geomagnetic Storm

open access: yesSpace Weather, Volume 24, Issue 7, July 2026.
Abstract Geomagnetically Induced Currents (GICs) are a key space weather hazard to ground‐based infrastructure, and can cause mis‐operation or even equipment failure. The solar wind interacts with the Earth's geomagnetic field, causing the magnetic field at ground level to vary with time.
A. W. Smith   +16 more
wiley   +1 more source

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