Results 61 to 70 of about 312 (156)

GIC‐Related Observations During the May 2024 Geomagnetic Storm in the United States

Space Weather, Volume 24, Issue 5, May 2026.
Abstract The May 2024 geomagnetic storm was one of the most severe in the past 20 years. Understanding how large geomagnetic disturbances (GMDs) impact geomagnetically induced currents (GICs) within electrical power grid networks is key to ensuring their resilience.
L. A. Wilkerson, R. S. Weigel, D. Thomas, D. Bor, E. J. Oughton, C. T. Gaunt, C. C. Balch, M. J. Wiltberger, A. Pulkkinen   +8 more
wiley   +1 more source

Counter-electrojet in the Indian Zone [PDF]

, 1979
33-35Contour maps of the percentage occurrence of daytime eastward drift in the E-region of the ionosphere over the equatorial stations, Tiruchirapalli (dip 5ON) and Thumba (dip 0.6°S), have been constructed from the spaced receiver drift measurements to
Vyas, G D, Chandra, H, Rastogi, R G
core  

Automatic Detection and Localization of Space Hurricanes Based on Deep Learning

Space Weather, Volume 24, Issue 5, May 2026.
Abstract Space hurricanes are distinct space weather phenomena that occur during extremely quiet geomagnetic conditions, and exhibit hurricane‐like cyclonic auroral bright spot structures. This phenomenon can induce severe space weather effects, including radio communication disruptions, navigation and positioning errors, and over‐the‐horizon radar ...
Yu‐Han Li, Duan Zhang, Qing‐He Zhang, Jin Wang, Kjellmar Oksavik, Xiao‐Ping Jiang, Zan‐Yang Xing, Hui‐Gen Yang, Yong Wang, Yu‐Zhang Ma, Yan‐Ju Sun, Sheng Lu, Bian‐Long Zhao, Jia‐Chen Zhao, Wen‐Qian Chen, Xiang‐Yu Wang, Zhi‐Feng Xiu, Shi‐Gang Zheng   +17 more
wiley   +1 more source

Changes in the Low Latitude E-region Drifts Associated with Counter Electrojet [PDF]

, 1981
164-166Changes in the horizontal drifts measured by spaced receiver technique at a low latitude station Ahmedabad at times of counter electrojet events are examined.
Vyas, G D, Chandra, H, Patel, V P
core  

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

Mean winds and tidal components during counter electrojet events

Geophysical Research Letters, 1993
The first observations of mean winds and the amplitude and phases of the tidal components measured with a meteor wind radar located at Trivandrum (8.5°N, 77°E) during five consecutive days of counter electrojet events identified in the horizontal component of the earth's magnetic field from January 27–31, 1987 are described. The mean zonal winds in the
V. V. Somayajulu, Ligi Cherian, K. Rajeev, Geetha Ramkumar, C. Raghava Reddi   +4 more
openaire   +1 more source

Solar Wind‐Magnetosphere‐Ionosphere Coupling During the October 2024 Storms

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract Two geomagnetic storms occurred in October 2024 (Oct 6‐9 and 10–12), driven by the impact of a series of interplanetary coronal mass ejections on the magnetosphere. The first was a moderate storm, with peak Sym‐H near −150 nT, whereas the second was intense, Sym‐H reaching −340 nT.
S. E. Milan, M. K. Mooney, G. E. Bower, R. M. Hodnett, U. V. Amerstorfer, C. Möstl, A. Samsonov, B. J. Anderson, J. Gjerloev, S. K. Vines   +9 more
wiley   +1 more source

Influence of the Eccentric Geomagnetic Dipole on Longitude Variations of Compressional Upstream Wave Amplitudes in the Topside Ionosphere: Results From the MSS‐1A Satellite

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Based on 2‐year magnetic data from the Macau science satellite, we investigate the compressional Pc3‐4 pulsations (between 16 and 100 mHz) driven by upstream waves (UWs). Our results confirm larger UWs amplitudes in the South Atlantic Anomaly (SAA) longitudes, agreeing with previous missions.
Chao Xiong, Haibin Liu, Hermann Lühr, Chunyu Xu   +3 more
wiley   +1 more source

Complexities of counter equatorial electrojet currents [PDF]

, 1992
89-96Features of an unusual partial counter electrojet observed on 21 July 1976 are discussed by comparing the VHF backscatter radar signals, equatorial ionograms, TEC measurements and surface magnetograms on that day and neighbouring quiet days.
Rangarajan, G K, Somayajulu, V V, Rastogi, R G   +2 more
core  

Ionization irregularities in the E region during counter electrojet

, 1976
A Langmuir probe, designed for studying the D and E region electron density and its irregularities, was flown on a Centaure rocket from Thumba, India (dip 0 deg 47 min S), during a strong counter electrojet on August 17, 1972 at 1532 local time.
Gupta, S. P., Prakash, S., Sinha, H. S. S., Rao, T. R.   +3 more
core   +1 more source