Results 61 to 70 of about 18,323 (219)

The Development of the Forbush Decrease and the Geomagnetic Storm Fields [PDF]

open access: yes, 1965
Relationships between Forbush decreases and associated geomagnetic storm ...
Akasofu, S.-I., Yoshida, S.
core   +2 more sources

A High‐Accuracy TEC Model for Low‐Mid Latitudes Using a BWO‐Optimized CNN‐xLSTM Hybrid Model With Multi‐Instrument Data Fusion

open access: yesSpace Weather, Volume 24, Issue 4, April 2026.
Abstract The total electron content (TEC) in the ionosphere is strongly affected by solar activity and geomagnetic disturbances in mid‐ and low‐latitude regions, making it a major source of error in GNSS navigation and communication systems. To improve the prediction accuracy of ionospheric TEC, this study proposes a deep learning model—Beluga Whale ...
Wang Li   +7 more
wiley   +1 more source

Recent geomagnetic storms observed by Macau Science Satellite-1

open access: yesEarth and Planetary Physics
Geomagnetic storms are rapid disturbances of the Earth’s magnetosphere. They are related to many geophysical phenomena and have large influences on human activities.
Qing Yan, HongBo Yao
doaj   +1 more source

Wavelet analysis of the ionospheric response at mid-latitudes during the April 200 storm using magnetograms and vTEC from GPS [PDF]

open access: yes, 2013
In this work we pursue the idea of computing a parameter that allows us to estimate the local ionospheric response to a geospheric event that triggers an ionospheric storm. For that, wavelet technique has been chosen because of its ability to analyze non-
Fernandez, Laura Isabel   +2 more
core  

Why Coronal Mass Ejections Arrive Differently: Solar Cycle Modulation Through Solar Wind Structure

open access: yesSpace Weather, Volume 24, Issue 4, April 2026.
Abstract Coronal Mass Ejections (CMEs) are large structures of magnetized plasma ejected from the Sun's atmosphere into the heliosphere. The interaction of CMEs with the ambient solar wind during propagation affects arrival time and speed at Earth. Since the solar wind structure changes with the solar cycle, variability in the transit times and arrival
D. L. Gyeltshen   +3 more
wiley   +1 more source

A Study of the Morphology of Magnetic Storms Great Magnetic Storms [PDF]

open access: yes, 1958
Average characteristics are determined for 74 great magnetic storms with sudden commencements that occurred in 1902-1945. The storm field is resolved for different epochs of storm time into tv;o parts: (i) Dst, which is independent of local time, that
Chapman, Sydney, Sugiura, Masahisa
core  

A New Phase for Space Weather

open access: yesSpace Weather, Volume 24, Issue 4, April 2026.
Abstract As we move into the declining phase of solar cycle 25, the sunspot number is going down but space weather impacts are not disappearing. Solar energetic particle events, large x‐ray flares, and geomagnetic storms are still happening and the declining phase will bring a different balance of hazards.
Steven K. Morley
wiley   +1 more source

New Phoenix Magnetic Anomaly Data Confirms Global Nature of Jurassic Quiet Zone and Provides Insight Into Early Pacific Spreading

open access: yesGeophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract We demonstrate the presence of the oldest identifiable marine magnetic anomalies in the Phoenix lineations of the western Pacific based on careful assessment of new data. Recently acquired sea surface magnetic anomalies and multichannel seismic profiles confirm magnetic signals recorded within the Middle‐Jurassic to Early Cretaceous basement ...
Masako Tominaga   +4 more
wiley   +1 more source

Recurrence based quantification of dynamical complexity in the Earth's magnetosphere at geospace storm timescales

open access: yes, 2018
Magnetic storms are the most prominent global manifestations of out-of-equilibrium magnetospheric dynamics. Investigating the dynamical complexity exhibited by geomagnetic observables can provide valuable insights into relevant physical processes as well
Balasis, Georgios   +5 more
core   +1 more source

Global Impacts of Ultra‐Low‐Frequency Waves: 1. Thermospheric Responses and Traveling Atmospheric Disturbances

open access: yesGeophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract Ultra‐low‐frequency (ULF) waves cause local Thermosphere‐Ionosphere (T‐I) perturbations, but their impacts on the global T‐I system including the generation of Traveling Atmospheric Disturbances (TADs) have never been evaluated. The mechanisms responsible for the TAD generation and propagation, whether through dynamic or thermal process, are ...
Haonan Wu   +6 more
wiley   +1 more source

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