Results 31 to 40 of about 12,426 (190)

Characteristics of storm time ion composition in the near-Earth plasma sheet using Geotail and RBSP measurements

Earth, Planets and Space, 2018
Solar wind particles and ionospheric O+ ions influence the near-Earth plasma sheet and inner magnetospheric composition. We studied the behavior of H+, O+ and He+ ions (9–210 keV) for intense and moderate geomagnetic storms of solar cycle 23 and 24.
Megha Pandya, Bhaskara Veenadhari, Masahito Nosé, Sandeep Kumar, Geoff D. Reeves, A. T. Y. Lui   +5 more
doaj   +1 more source

Quantifying extreme behaviour in geomagnetic activity [PDF]

, 2011
Understanding the extremes in geomagnetic activity is an important component in understanding just how severe conditions can become in the terrestrial space environment. Extreme activity also has consequences for technological systems.
Alan W. P. Thomson, Beirlant, Cliver, Coles, Ewan B. Dawson, Koons, Lanzerotti, O'Brien, Pirjola, R Foundation for Statistical Computing, Reay, Sarah J. Reay, Silbergleit, Silbergleit, Siscoe, Stephenson, Thomson, Thomson, Tsubouchi   +18 more
core   +1 more source

Applications for CryoSat-2 satellite magnetic data in studies of Earth’s core field variations

Earth, Planets and Space, 2021
We use 20 years of continuous magnetic field measurements from the Ørsted, CHAMP and Swarm satellite missions, supplemented by calibrated platform magnetometer data from the CryoSat-2 satellite, to study time variations of the Earth’s core field at ...
Magnus D. Hammer, Christopher C. Finlay, Nils Olsen   +2 more
doaj   +1 more source

Coupled spin models for magnetic variation of planets and stars

, 2011
Geomagnetism is characterized by intermittent polarity reversals and rapid fluctuations. We have recently proposed a coupled macro-spin model to describe these dynamics based on the idea that the whole dynamo mechanism is described by the coherent ...
A. Ferriz-Mas, A. Nakamichi, Acebron, Antoni, Campa, Christensen, D. Schmitt, Dias, Franchiotti, Gilbert, H. Mouri, Inglis, Ishikawa, J. Wicht, Kageyama, Kageyama, Kida, Kono, Korte, Kuramoto, M. Morikawa, Matsuyama, Mazaud, Rikitake, Roberts, Seki, Sota, Stanley, Stevenson, Tsinober   +29 more
core   +1 more source

The Gridded Geomagnetic Field of India with MATLAB GUI

Data 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, Rohit Kumar Jha, Amrita Yadav, S. P. Anand, Gopi K. Seemala, Prasant K. Tiwari, A. P. Dimri   +6 more
doaj   +1 more source

Kinetic Alfvén Waves Excited by Multiple Free Energy Sources in the Magnetotail

The Astrophysical Journal, 2023
The generation of kinetic Alfvén waves (KAWs) is investigated through a three-component theoretical model incorporating ion beam and velocity shear as the sources of free energy in a non-Maxwellian κ -distributed plasmas.
K. C. Barik, S. V. Singh, G. S. Lakhina
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 )

Earth, 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, Masahito Nosé, Jayashree Bulusu, Geeta Vichare, A. K. Sinha   +4 more
doaj   +1 more source

Geomagnetism : review 2010 [PDF]

, 2011
The Geomagnetism team measures, records, models and interprets variations in the Earth’s natural magnetic fields, across the world and over time. Our data and expertise help to develop scientific understanding of the evolution of the solid Earth and ...

core  

Dawn‐Side Anomaly in Sudden Geomagnetic Field Responses to Solar Wind Pressure Discontinuities During the 10 May and 10 October 2024 Geomagnetic Storms

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Interactions of solar wind dynamic pressure (SWDP) discontinuities with Earth's magnetosphere cause geomagnetic Sudden Commencements (SCs). Typically, positive/negative SCs occur at low latitudes due to enhancements/reductions in SWDP.
Deeksha Rai, S. Tulasi Ram, B. Nilam, D. M. Oliveira, B. Remya, Anil Raghav, D. Chakrabarty, Abhishek Kumar, Shivam Parashar, Vipin K. Yadav, A. P. Dimri   +10 more
wiley   +1 more source

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

Space 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, J. J. Love, A. Kelbert, P. A. Bedrosian, E. J. Rigler   +4 more
doaj   +1 more source