Results 81 to 90 of about 1,068 (174)

Dayside Polar Cap Aurora and Their Connection to NBZ Currents

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract During northward interplanetary magnetic field (IMF) conditions, magnetic reconnection between the Earth's magnetosphere and the IMF takes place on high latitudes, causing the auroral oval to contract. During those times several auroral structures may appear inside the polar cap, such as cusp aurora, high latitude dayside aurora (HiLDA) and ...
Maria Chloi Katrougkalou, Anita Kullen, Lei Cai, Lorenz Roth, Yongliang Zhang   +4 more
wiley   +1 more source

Cusp Ion Dispersions and Their Relation to the Dayside Magnetic Reconnection Location: TRACERS First Results

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract A key process in solar‐terrestrial interactions is magnetic reconnection at the magnetopause. In addition to in situ observations of plasma entry at the magnetopause, some of the important global aspects of magnetic reconnection are addressed using plasma observations in the Earth's magnetospheric cusp region. Ions injected at the magnetopause
K. J. Trattner, S. M. Petrinec, S. A. Fuselier, J. W. Bonnell, S. R. Bounds, B. L. Burkholder, I. H. Cairns, L.‐J. Chen, I. W. Christopher, H. K. Connor, J. C. Dorelli, R. G. Gomez, K. Goodrich, B. Michotte de Welle, D. M. Miles, M. Oieroset, J. S. Halekas, S. A. Henderson, G. Hospodarsky, J. Labelle, S. L. Soni, R. Strangeway, D. Sur   +22 more
wiley   +1 more source

A Multi‐Event Comparison of dB/dt Resulting From Omega Band Aurora

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract Omega bands are an auroral form occurring in the dawn sector which cause magnetic perturbations on the ground as they drift eastwards. If these changes in the magnetic field are large, omega bands can become a space weather hazard as the corresponding geomagnetically induced currents have the potential to cause damage to ground based ...
R. M. Hodnett, S. E. Milan, S. K. Vines, J. W. Gjerloev, L. J. Paxton   +4 more
wiley   +1 more source

Coupling Seismic, Gravity and Magnetic Surveys for the Investigation of Planetary Lava Tubes: A Terrestrial Analog Case Study in Lanzarote (Spain)

Journal of Geophysical Research: Planets, Volume 131, Issue 8, August 2026.
Abstract Lava tubes are subsurface volcanic conduits formed during effusive basaltic eruptions and are considered key targets for planetary exploration. Orbital remote sensing on the Moon and Mars has identified numerous collapse pits interpreted as possible surface expressions of underlying lava tube systems. However, the limited resolution of current
A. Ghirotto, I. Barone, F. Santoro De Vico, G. Melchiori, A. Zunino, E. Armadillo, A. Mittelholz, F. Sauro, M. Massironi   +8 more
wiley   +1 more source

Radio‐Quiet Ionosonde Observations for Monitoring Absorption in the HF Band

Radio Science, Volume 61, Issue 8, August 2026.
Abstract This work presents a technique to monitor ionospheric absorption in the HF radio band using ionosondes. For this purpose, the ionosondes were run in a radio‐silent mode, recording not reflections of their own emitted signals but oblique signals from transmitters of opportunity.
T. G. W. Verhulst, A. Buzás, D. Altadill, A. Segarra, V. de Paula, V. Barta   +5 more
wiley   +1 more source

Quantitative Assessment of Geographic Control of December Solstice EIA Crest Shifts Over Southeast Asia Under Low Solar Activity

Space Weather, Volume 24, Issue 8, August 2026.
Abstract This study quantitatively assesses the drivers of the Equatorial Ionization Anomaly (EIA) morphology and latitudinal shifts over Southeast Asia during the December solstice. We use a 27‐year ionospheric data set (1998–2024) of total electron content (TEC) and F2‐layer peak electron density (NmF2) under geomagnetically quiet conditions.
Linfeng Huang, Jinsong Wang, Tian Mao, Shanhai Song, Yungang Wang   +4 more
wiley   +1 more source

Predicting Geomagnetic Activity in the Ascending and Declining Phases of the Solar Cycle

Space Weather, Volume 24, Issue 8, August 2026.
Abstract Most predictions of space climate, that is, the long‐term behavior of the solar‐terrestrial environment, have focused on forecasting the 11‐year sunspot cycle. Geomagnetic activity, on the other hand, has mainly been predicted in shorter, space weather timescales of up to days to weeks.
Timo Qvick, Timo Asikainen, Kalevi Mursula   +2 more
wiley   +1 more source

Orbital Decay of the Three SNIPE CubeSats During the Super Geomagnetic Storm in May 2024

Space Weather, Volume 24, Issue 8, August 2026.
Abstract The Mother's Day (Gannon) geomagnetic superstorm of May 2024 produced extreme thermospheric heating and expansion, resulting in enhanced atmospheric drag on low Earth orbiting (LEO) satellites. We investigate storm‐time thermospheric drag and density variability using three satellites of the Small‐scale magNetospheric and Ionospheric Plasma ...
Hosub Song, Ki‐Hwan Keum, Jaeheung Park, Tae‐Yong Yang, Jongdae Sohn, Youngbum Song, Yihua Zheng, Dae‐Hee Lee, Jaejin Lee   +8 more
wiley   +1 more source

Models and predictions of Earth’s magnetic field based on geomagnetic observatory data

Earth, Planets and Space
Observations of the geomagnetic field taken at Earth’s surface are processed to construct a set of continuous models of the geomagnetic field and its secular variation from 1956 to 2033.
I. Wardinski, F. Terra Nova, H. Amit
doaj   +1 more source

Geomagnetic Energy Approach to Space Debris Deorbiting in a Low Earth Orbit

International Journal of Aerospace Engineering, 2019
The space debris removal problem needs to be solved urgently. Over 70% of debris is distributed between the 500 km and 1000 km low Earth orbits (LEO), and existing methods may be theoretically feasible but are not the high-efficiency and low-consumption ...
Guanhua Feng, Wenhao Li, Heng Zhang
doaj   +1 more source