Results 91 to 100 of about 1,927 (242)

Revisiting the Ionospheric Disturbances Over Low Latitude Region of China During Super Typhoon Hato

Space Weather
The ionosphere exhibits complex variations due to the influences from above and below. To distinguish the source of ionospheric disturbances is important for understanding the variation process and the coupling mechanism among different regions.
Ke Li, Donghe Zhang, Yi Zeng, Yaoyu Tian, Guofeng Dai, Zhizhao Liu, Guanglin Yang, Shuji Sun, Guozhu Li, Yongqiang Hao, Zuo Xiao   +10 more
doaj   +1 more source

Forecast of geomagnetic storms in April–November 2024 based on cosmic ray monitoring results

Solar-Terrestrial Physics
Since 2013, continuous monitoring of spatial-angular distribution of CRs for each hour of measurements has been carried out at SHICRA SB RAS, using data from the international neutron monitor database NMDB and the method of real-time global survey.
Zverev Anton, Grigoryev Vladislav, Starodubtsev Sergei, Gololobov Peter   +3 more
doaj   +1 more source

Iterative and Steady Black Auroral Stripes and Their Possible Causality in Plasma‐Sheet Electron Distributions: Implications From Low‐Altitude Reimei Observations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract Iterative black auroral stripes were identified in auroral images obtained by the low‐altitude microsatellite Reimei. These steady and narrow black stripes are a remarkable feature of diffuse auroras generated by energetic electrons precipitating at higher latitudes than pulsating auroras.
Masafumi Hirahara, Yusuke Ebihara, Mizuki Fukizawa, Takanori Nishiyama, Takeshi Sakanoi   +4 more
wiley   +1 more source

Gravity Wave Activity in the Stratosphere and Mesosphere During Hurricane Sam

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract Multi‐instrument observations of gravity wave (GW) activity during Hurricane Sam (2021) were made using AIRS (Atmospheric Infrared Sounder) satellite data, ERA5 reanalysis, and TIMED/SABER temperature profiles. Two GW extraction methods, vertical high‐pass filtering and empirical mode decomposition, were applied to quantify wave‐induced ...
Ayden L. S. Gann, Erdal Yiğit
wiley   +1 more source

Recent geomagnetic storms observed by Macau Science Satellite-1

Earth 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

Association of Geomagnetic Disturbances and Suicide Attempts in Taiwan, 1997-2013: A Cross-Sectional Study. [PDF]

Int J Environ Res Public Health, 2020
Nishimura T, Tsai IJ, Yamauchi H, Nakatani E, Fukushima M, Hsu CY.   +5 more
europepmc   +1 more source

Influence of Geomagnetically Induced Currents on Power Line Harmonic Radiation Observed at the Kannuslehto Ground‐Based Station

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract This study investigates the properties of power line harmonic radiation (PLHR), a type of electromagnetic emission generated by electric power networks. In particular, we analyze how the PLHR intensity varies in relation to geomagnetically induced currents (GICs), quasi‐DC currents driven by rapid changes in the geomagnetic field during space ...
K. Drastichová, F. Němec, J. Manninen, T. Raita   +3 more
wiley   +1 more source

Height‐Dependent Evolution of the Ionospheric Response to the May 2024 Superstorm: Global GNSS‐POD, GNSS‐RO, and Ground‐Based Observations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract Capturing global ionospheric response during extreme geomagnetic storms remains a major observational challenge. During 10–11 May, 2024 superstorm, we investigate the height‐dependent response of the F‐region using multi‐constellation GNSS‐POD limb‐sounding measurements from COSMIC‐2, Spire, PlanetiQ, and FengYun‐3 satellites. Approximately 12,
Nimalan Swarnalingam, Dong L. Wu, Daniel J. Emmons, Cornelius Csar Jude H. Salinas   +3 more
wiley   +1 more source

Enhancing Geomagnetic Disturbance Predictions with Neural Networks: A Case Study on K-Index Classification

Atmosphere
To explore the application of neural networks for estimating geomagnetic field disturbances, this study pays particular attention to K-index classification.
Aizhan Altaibek, Beibit Zhumabayev, Aiganym Sarsembayeva, Marat Nurtas, Diana Zakir   +4 more
doaj   +1 more source

Ionosphere‐Thermosphere Responses to the March 2023 Geomagnetic Storm Using Observations and TIEGCM Simulations Driven by Data Assimilated Aurora and Electric Fields

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract We investigate Ionosphere‐Thermosphere (IT) responses to the March 2023 geomagnetic storm using GOLD and PFISR observations, along with TIEGCM simulations driven by data‐assimilated aurora and electric fields. A Lattice Kriging approach is implemented to assimilate auroral electron flux and characteristic energy from ground‐based (THEMIS/ASIs)
Prakash Poudel, Xian Lu
wiley   +1 more source