Results 51 to 60 of about 1,817,388 (196)

Localized Threats: How Ground Conductivity Shapes the Geoelectric Response

open access: yesSpace Weather
Geomagnetic storms can induce strong geoelectric fields in the ground. These fields drive geomagnetically induced currents in technological conductor systems, such as power grids.
M. Kellinsalmi   +3 more
doaj   +1 more source

Monitoring of the geomagnetic and geoelectric field in two regions of Greece for the detection of earthquake precursors

open access: yesAnnals of Geophysics, 1997
Two magnetotelluric stations have been installed in the South-Eastern Thessaly basin (Central Greece), which have recorded the geomagnetic and geoelectric fields since 1993.
E. E. Papadimitriou   +4 more
doaj   +1 more source

Modeling Geomagnetic Interference on Railway Signaling Track Circuits

open access: yesSpace Weather, 2021
Misoperation of railway signaling during geomagnetic disturbances has occurred in a number of countries. Railway signals are activated by track circuits that detect the presence of a train in a particular rail section, but geomagnetically induced ...
D. H. Boteler
doaj   +1 more source

Major Space Weather Risks Identified via Coupled Physics‐Engineering‐Economic Modeling

open access: yesAGU Advances, Volume 7, Issue 6, September 2026.
Abstract Space weather poses an important but under‐quantified threat to society. While severe geomagnetic storms are recognized as potential global catastrophes, their socio‐economic impacts remain poorly quantified. We present a novel physics‐engineering‐economic framework that links geophysical drivers to power grid geoelectric fields, transformer ...
Edward J. Oughton   +7 more
wiley   +1 more source

Diurnal Characteristics of Geoelectric Fields and Their Changes Associated with the Alxa Zuoqi MS5.8 Earthquake on 15 April 2015 (Inner Mongolia) [PDF]

open access: yes, 2018
In China, efforts are being made to monitor geoelectric fields through a large network of stations deployed and managed by the China Earthquake Administration.
Cui, Tengfa   +5 more
core   +1 more source

Study on the background characteristics of electric fields constrained by cross-sphere observations

open access: yesEarth, Planets and Space
The interactions among Earth’s spheres constitute both the starting point and ultimate goal of Earth system science research. An in-depth investigation into these interactions is essential for advancing the interdisciplinary integration and collaborative
MuPing Yang   +7 more
doaj   +1 more source

A Hybrid Framework Combining Physical and Data‐Driven Models for Predicting the Timing of Fault Instability

open access: yesEarth and Space Science, Volume 13, Issue 9, September 2026.
Abstract Reliable prediction of earthquakes and rock mass failure has long been hampered by a fundamental trade‐off: achieving both a long warning window and high prediction accuracy. Physical models, such as the failure forecast method (FFM) based on the time‐reversed Omori law, can provide longer warning windows but are sensitive to data noise and ...
Jian‐Zhi Zhang   +4 more
wiley   +1 more source

Distinct Groundwater Regimes in West Antarctic Sedimentary Basins Inferred From Magnetotelluric Imaging

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Subglacial sedimentary basins in Antarctica are hypothesized to modulate ice flow and biogeochemical cycles via groundwater and geothermal feedbacks, yet their properties remain poorly constrained. Here, we present a joint quantitative analysis of new magnetotelluric (MT) data acquired at Thwaites Glacier (TG) and WAIS Divide, alongside legacy
Siobhan F. Killingbeck   +8 more
wiley   +1 more source

A review of progress in modelling of induced geoelectric and geomagnetic fields with special regard to induced currents [PDF]

open access: yes, 2009
The Earth’s lithosphere and mantle respond to Space Weather through time-varying, depth-dependent induced magnetic and electric fields. Understanding the properties of these electromagnetic fields is a key consideration in modelling the hazard to ...
Thomson, Alan   +2 more
core   +1 more source

Extended study of extreme geoelectric field event scenarios for geomagnetically induced current applications

open access: yesSpace Weather, 2013
Geomagnetically induced currents (GIC) flowing in man‐made ground technological systems are a direct manifestation of adverse space weather. Today, there is great concern over possible geomagnetically induced current effects on power transmission ...
Chigomezyo M. Ngwira   +3 more
doaj   +1 more source

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