Results 61 to 70 of about 5,638 (223)

Leveraging Legacy Broadband Magnetotelluric Data for Geoelectric Field Hazard Assessment in Southern Italy

Space Weather, Volume 24, Issue 5, May 2026.
Abstract Geomagnetically induced currents (GICs) are a significant space weather hazard. Their accurate assessment requires estimating the geoelectric field, which depends on the Earth's subsurface electrical conductivity. While long‐period magnetotelluric (MT) surveys are ideal, archives of legacy broadband MT data, originally acquired for geological ...
P. De Michelis, G. Pignatiello, E. Consolini, M. De Girolamo, A. Siniscalchi   +4 more
wiley   +1 more source

Links of the Plasmapause With Other Boundary Layers of the Magnetosphere: Ionospheric Convection, Radiation Belt Boundaries, Auroral Oval

Frontiers in Astronomy and Space Sciences, 2021
The plasmapause marks the limit of the plasmasphere and is characterized by a sudden change in plasma density. This can influence the other regions of the magnetosphere, including due to different waves circulating inside and outside the plasmasphere. In
V. Pierrard, V. Pierrard, E. Botek, J.-F. Ripoll, J.-F. Ripoll, S. A. Thaller, M. B. Moldwin, M. Ruohoniemi, G. Reeves   +8 more
doaj   +1 more source

The Double Pulsar Eclipses I: Phenomenology and Multi-frequency Analysis [PDF]

, 2012
The double pulsar PSR J0737-3039A/B displays short, 30 s eclipses that arise around conjunction when the radio waves emitted by pulsar A are absorbed as they propagate through the magnetosphere of its companion pulsar B.
A. Possenti, Arons, Arons, Breton, Burgay, F. Camilo, I. H. Stairs, Johnston, Kaspi, Lyutikov, M. A. McLaughlin, M. Kramer, M. Lyutikov, McLaughlin, McLaughlin, Perera, R. D. Ferdman, R. P. Breton, Rafikov, Ransom, S. M. Ransom, Spitkovsky, V. M. Kaspi   +22 more
core   +3 more sources

Updates, Examples and Validation of the Global Ionosphere Thermosphere Model

Space Weather, Volume 24, Issue 5, May 2026.
Abstract This study provides an updated description, example simulations, and validation of the Global Ionosphere Thermosphere Model (GITM). The updates to GITM include using an exothermic semi‐implicit chemistry scheme that no longer requires an altitude dependent heating efficiency; an ionospheric wind‐driven dynamo; improved neutral, ion, and ...
A. J. Ridley, C. Wu, A. Bukowski, J. Bell   +3 more
wiley   +1 more source

The fate of the outer plasmasphere [PDF]

Geophysical Research Letters, 1997
Both the solar wind and the ionosphere contribute to Earth's magnetospheric plasma environment. However, it is not widely appreciated that the plasmasphere is a large reservoir of ionospheric ions that can be tapped to populate the plasma sheet. We employ empirical models of high‐latitude ionospheric convection and the geomagnetic field to describe the
R. C. Elphic, M. F. Thomsen, J. E. Borovsky   +2 more
openaire   +1 more source

Analysis of Chorus Wave Power on Burst‐Mode Timescales During the Van Allen Probes Era

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract Interactions between whistler‐mode chorus waves and electrons are a key driver of dynamics in Earth's radiation belts. These global dynamics are often described using Fokker‐Planck diffusion models. Whilst, in many cases, such models effectively describe the large scale changes within the region, they often rely upon spatially and temporally ...
R. Black, O. Allanson, N. P. Meredith, A. Hillier, D. P. Hartley   +4 more
wiley   +1 more source

Refilling of the Earth's plasmasphere

Eos, Transactions American Geophysical Union, 1991
The Earth's ionosphere at mid‐latitudes is produced chiefly by solar EUV‐induced photo‐ionization of the neutral atmosphere at altitudes of 90 to 300–400 kilometers. Such ionized gas, or plasma—entrained by the Earth's (basically bipolar) magnetic field—flows upward along magnetic lines of force, until the plasma gas pressure is equalized along the ...
J. L. Horwitz, N. Singh
openaire   +1 more source

Coincident Observations by the Kharkiv IS Radar and Ionosonde, DMSP and Arase (ERG) Satellites, and FLIP Model Simulations: Implications for the NRLMSISE‐00 Hydrogen Density, Plasmasphere, and Ionosphere

Geophysical Research Letters, 2018
This paper reports the results of ionosphere and plasmasphere observations with the Kharkiv incoherent scatter radar and ionosonde, Defense Meteorological Satellite Program, and Arase (ERG) satellites and simulations with field line interhemispheric ...
D. V. Kotov, P. G. Richards, V. Truhlík, O. V. Bogomaz, M. O. Shulha, N. Maruyama, M. Hairston, Y. Miyoshi, Y. Kasahara, A. Kumamoto, F. Tsuchiya, A. Matsuoka, I. Shinohara, M. Hernández‐Pajares, I. F. Domnin, T. G. Zhivolup, L. Ya. Emelyanov, Ya. M. Chepurnyy   +17 more
doaj   +1 more source

Filtering of Magnetosonic Waves by Mesoscale Plasmaspheric Density Interfaces

Geophysical Research Letters, 2023
Magnetosonic waves inside and outside the plasmasphere differ statistically in occurrence rate, frequency, and intensity. How the density interface separates magnetosonic waves inside and outside the plasmasphere remains not fully understood.
Zhiyong Wu, Zhenpeng Su, Huinan Zheng, Yuming Wang   +3 more
doaj   +1 more source

An Analysis of the Anomalous Response of the Van Allen Probes EFW Instrument

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract Recent in situ measurements of electric fields from missions such as Polar, DEMETER, and the Van Allen Probes have reported anomalies in double‐probe electric field measurements, attributed to unintended coupling between the sensor and nearby driven stub surfaces through the ambient plasma.
K. Greene, J. W. Bonnell, K. A. Goodrich, J. L. Bowman, E. M. Tejero, D. P. Hartley, W. E. Amatucci   +6 more
wiley   +1 more source