Results 21 to 30 of about 2,258 (224)

The CHAOS-7 geomagnetic field model and observed changes in the South Atlantic Anomaly

open access: yesEarth, Planets and Space, 2020
We present the CHAOS-7 model of the time-dependent near-Earth geomagnetic field between 1999 and 2020 based on magnetic field observations collected by the low-Earth orbit satellites Swarm, CryoSat-2, CHAMP, SAC-C and Ørsted, and on annual differences of
Christopher C. Finlay   +6 more
doaj   +1 more source

Simulating the dependence of seismo-ionospheric coupling on the magnetic field inclination [PDF]

open access: yesAnnales Geophysicae, 2018
Infrasound generated during a seismic event upon reaching the ionospheric heights possesses the ability to perturb the ionosphere. Detailed modelling investigation considering 1-D dissipative linear dynamics, however, indicates that the magnitude of ...
L. M. Joshi   +4 more
doaj   +1 more source

Deep Electron Density Depletion Near Sunset Terminator on St. Patrick's Day Storm and Its Impacts on Skywave Propagation

open access: yesSpace Weather, 2023
The plasma density distribution in the equatorial and low latitude ionosphere can often be severely disturbed during active space weather events that can have paramount impacts on the long‐distance high frequency (HF) radio wave (Skywave) communications ...
M. Ankita   +3 more
doaj   +1 more source

Co-estimating geomagnetic field and calibration parameters: modeling Earth’s magnetic field with platform magnetometer data

open access: yesEarth, Planets and Space, 2021
Models of the geomagnetic field rely on magnetic data of high spatial and temporal resolution to give an accurate picture of the Earth’s internal magnetic field and its time-dependence.
Clemens Kloss   +2 more
doaj   +1 more source

The Gridded Geomagnetic Field of India with MATLAB GUI

open access: yesData Science Journal
A unique two-dimensional gridded geomagnetic map of India is constructed using the geomagnetic field observations from 11 observatories of India, operated by the Indian Institute of Geomagnetism. In order to create the spatial grid, 11 spatial techniques
Jayashree Bulusu   +6 more
doaj   +1 more source

The afternoon counter-electrojet current system along the 75°E meridian during the IEEY

open access: yesEarth, Planets and Space, 2017
In the present study, the technique of principal component analysis (PCA) is applied to analyze the hourly mean values of geomagnetic field components D, H, and Z along an Indo-Russian chain of stations during the International Equatorial Electrojet Year
S. K. Bhardwaj, P. B. V. Subba Rao
doaj   +1 more source

Evaluation of groundwater potential and saline water intrusion using secondary geophysical parameters: A case study from western Maharashtra, India

open access: yesE3S Web of Conferences, 2018
Aquifers along the coastal regions around the world are facing severe level of saline water intrusion problems. Rapid development and the associated increase in groundwater withdrawals intensify the problem.
Suneetha N., Gupta Gautam
doaj   +1 more source

A 100‐year Geoelectric Hazard Analysis for the U.S. High‐Voltage Power Grid

open access: yesSpace Weather, 2020
A once‐per‐century geoelectric hazard map is created for the U.S. high‐voltage power grid. A statistical extrapolation from 31 years of magnetic field measurements is made by identifying 84 geomagnetic storms with the Kp and Dst indices.
G. M. Lucas   +4 more
doaj   +1 more source

Observation of ionospheric Alfven resonator with double spectral resonance structures at low latitude station, Shillong ( $$dipole L=1.08$$ d i p o l e L = 1.08 )

open access: yesEarth, Planets and Space, 2022
Spectral Resonance Structures (SRS) of Ionospheric Alfven Resonator (IAR) are investigated by analysing the magnetic field data of a high sampling frequency induction coil magnetometer, installed at a low latitude Indian station, Shillong $$(25.56^\circ ...
P. Adhitya   +4 more
doaj   +1 more source

On the Generation of Pre‐Sunrise Equatorial Plasma Bubbles in Southeast Asia During the Geomagnetic Storm of May 2024

open access: yesEarth and Space Science, Volume 13, Issue 8, August 2026.
Abstract A set of fresh Equatorial Plasma Bubbles (EPBs) formed during pre‐sunrise hours in the Southeast Asian sector amid the recovery phase of May 2024 geomagnetic storm. They offered new insights into their formation mechanism. This study used Total Electron Content (TEC) and Rate of TEC Index maps over Indonesia, along with ionosondes in Thailand ...
Sri Ekawati   +9 more
wiley   +1 more source

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