Results 111 to 120 of about 9,307,202 (259)

Earthward O+ Injections in the Plasma Sheet Boundary Layer During Geomagnetic Storms

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract During geomagnetic storms, energetic ions are injected from the Earth's magnetotail along the plasma sheet boundary layer (PSBL). Owing to its off‐equatorial inclined orbit, the Arase satellite is in a prime position to observe these injections in the PSBL on the nightside at the apogee.
M. M. H. Kalliokoski, L. M. Kistler, K. Asamura, S. Kasahara, Y. Miyoshi, K. Keika, T. Hori, A. Matsuoka, K. Yamamoto, J. Liao   +9 more
wiley   +1 more source

Mathematical Properties Relevant to Geomagnetic Field Modeling

, 2014
Geomagnetic field modeling consists in converting large numbers of magnetic observations into a linear combination of elementary mathematical functions that best describes those observations.
Nils Olsen, Hulot, Gauthier, Sabaka, Terence J., Olsen, Nils, Gauthier Hulot, Terence J. Sabaka   +5 more
core   +1 more source

Coupled Thermosphere–Ionosphere Dynamics During the 17 January 2013 Storm: GITM–TIDAS Comparison With Millstone Hill ISR Measurements

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract This article analyzes a weak geomagnetic storm on January 17–18, 2013, using a first‐principles model (Global Ionosphere Thermosphere Model (GITM) with an empirical assimilative ionospheric model (TIDAS), evaluated against observations in the form of Millstone Hill (MH) incoherent scatter radar (ISR) altitude profiles and global navigation ...
Onyinye Nwankwo‐Omoloja, Aaron J. Ridley, Shun‐Rong Zhang, Philip J. Erickson   +3 more
wiley   +1 more source

Kelvin–Helmholtz Spectral Redistribution by Flow and Density Structure at the Dusk Dayside Magnetopause

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract We study the development of the Kelvin‐Helmholtz instability (KHI) along the dusk dayside Earth's magnetopause with and without the presence of enhanced plasma density at the shear interface. Using three‐dimensional MAGE global simulations, we establish general KHI growth rate diagrams, which depend sensitively on the transverse profiles of ...
G. Peyrichon, J.‐F. Ripoll, H. El‐Rabii, A. T. Michael, V. G. Merkin, M. Cosmides, K. Sorathia, F. R. Toffoletto, A. Y. Ukhorskiy   +8 more
wiley   +1 more source

Candidate geomagnetic field models for IGRF-14 and secular acceleration since 2020

Earth, Planets and Space
IGRF-14 is the fourteenth generation of the International Geomagnetic Reference Field (IGRF), a spherical harmonic model of Earth’s main magnetic field and its secular variation, developed through international collaboration under the auspices of the ...
Arnaud Chulliat, Manoj Nair, Sam Califf
doaj   +1 more source

Characterization of High‐Frequency GNSS Total Electron Content Variations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract Global Navigation Satellite System (GNSS)–derived Total Electron Content (TEC) is widely used to investigate ionospheric variability, but has primarily been applied to low‐frequency fluctuations. Here we present a long‐term statistical characterization of high‐frequency (30–500 mHz) TEC variations using multi‐constellation GNSS data from 11 ...
J. Pérez‐Coll Jiménez, N. Ivchenko, N. Partamies, M. Håkansson   +3 more
wiley   +1 more source

Spatiotemporal Geomagnetic Intensity Mapping Using Gaussian Process for Underwater Vehicle Localization

한국해양공학회지
Accurate geomagnetic field mapping plays a critical role in the navigation and localization of autonomous underwater vehicles (AUVs), especially in environments where traditional satellite navigation is unavailable. This paper introduces a spatiotemporal
Dongwook Lee, Hyunkeun Cho, Jinwhan Kim
doaj   +1 more source

Spatial Relationship Between the Midlatitude Ionospheric Trough and Plasmaspheric Plumes

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract The plasmasphere, a subsystem of the complex geospace environment, is a torus of cold plasma “frozen” into Earth's magnetic field and sourced from the ionosphere. Plasmaspheric plumes–drainage channels formed during geospace storms–have primarily been observed near the equator.
Balázs Heilig, Lilla Murár‐Juhász, Máté Tomasik   +2 more
wiley   +1 more source

Short-term prediction of geomagnetic secular variation with an echo state network

Earth, Planets and Space
A technique for predicting the secular variation (SV) of the geomagnetic field based on the echo state network (ESN) model is proposed. SV is controlled by the geodynamo process in the Earth’s outer core, and modeling its nonlinear behaviors can be ...
Shin’ya Nakano, Sho Sato, Hiroaki Toh
doaj   +1 more source

Statistics of Orientation of Nightside Auroral Arcs and Interplanetary Conditions

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract We present statistics and dependence on interplanetary conditions of the orientation of nightside auroral arcs in the equatorward part of the auroral oval. The results related to the arcs essentially represent the orientation and dynamics of the equatorial boundary of the nightside auroral oval.
A. Kozlovsky, M. Myllymaa, R. Lukianova, T. Raita   +3 more
wiley   +1 more source