Results 31 to 40 of about 3,587,742 (160)

Front Matter

open access: yesGeophysical Monograph Series, Page i-xiv., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
wiley  

+1 more source

Three‐Dimensional Modeling of the Ground Electric Field in Fennoscandia During the Halloween Geomagnetic Storm

open access: yesSpace Weather, 2023
In this study, we perform three‐dimensional (3‐D) ground electric field (GEF) modeling in Fennoscandia for three days of the Halloween geomagnetic storm (29–31 October 2003) using magnetic field data from the International Monitor for Auroral Geomagnetic
Elena Marshalko   +3 more
doaj   +1 more source

Geomagnetically Induced Currents: Frequency Spectra and Threats to Voltage Stability

open access: yesIEEE Access, 2022
Geomagnetically induced currents are induced after a complex interaction between the sun and earth’s magnetic field. GICs may cripple power systems leading to voltage collapse and a drop in power quality.
Pitambar Jankee   +4 more
doaj   +1 more source

Modelling of geomagnetically induced currents in the Czech transmission grid

open access: yesEarth, Planets and Space, 2021
We investigate the maximum expected magnitudes of the geomagnetically induced currents (GICs) in the Czech transmission power network. We compute a model utilising the Lehtinen–Pirjola method, considering the plane-wave model of the geoelectric field ...
Michal Švanda   +2 more
doaj   +1 more source

Spatial scale of geomagnetic Pc5/Pi3 pulsations as a factor of their efficiency in generation of geomagnetically induced currents

open access: yesEarth, Planets and Space, 2021
Geomagnetically induced currents (GICs) in a quasi-meridional power transmission line on the Kola Peninsula are analyzed during the intervals of Pc5/Pi3 (frequency range from 1.5 to 5 mHz) pulsations recorded at the IMAGE magnetometer network.
Nadezda V Yagova   +3 more
doaj   +1 more source

High‐Temperature Magnetic Field Mapping Using a Single‐Crystal Diamond MEMS Resonator Array

open access: yesAdvanced Science, EarlyView.
A single‐crystal diamond MEMS resonator array enables magnetic‐field reconstruction with millisecond response, nanotesla level magnetic noise, and stable operation up to 573 K. Two‐ and three‐dimensional magnetic field mapping are demonstrated using ΔEeffect sensing, highlighting the potential of diamond MEMS technology for hightemperature magnetic ...
Zilong Zhang   +4 more
wiley   +1 more source

A Review of Geomagnetically Induced Current Effects on Electrical Power System: Principles and Theory

open access: yesIEEE 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

Multi‐command wearable magnetic human‐machine interface enabled by low‐noise sensing and time‐series deep learning

open access: yesInfoScience, EarlyView.
This study integrates a wrist‐worn sensing platform based on a low‐noise planar Hall magnetoresistive sensor with time‐series deep learning to enable long‐range, single‐sensor, multi‐command gesture recognition with high accuracy. Further evaluations show reliable generalization across different days, previously unseen users, wearing‐position ...
Guannan Mu   +5 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

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