Results 101 to 110 of about 290,411 (293)

TID Observations and Source Analysis During the 2017 Memorial Day Weekend Geomagnetic Storm Over North America

Journal of Geophysical Research: Space Physics, 2018
We investigate ionospheric perturbations associated with traveling ionospheric disturbance (TID) during the geomagnetic storm on Memorial Day weekend (28 May) 2017.
O. Jonah, A. Coster, Shunrong Zhang, L. Goncharenko, P. Erickson, E. R. Paula, E. Kherani   +6 more
semanticscholar   +1 more source

Derivation of Ambient Electron Density Using Spacecraft Potential Measurements From the MMS and Van Allen Satellites: Application to the Plasmasphere

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract We investigate the empirical relationship between the spacecraft potential (Vs) measured by the Electric Field Double Probes, and the electron density (Ne) measured by the Fast Plasma Instrument on the MMS spacecraft. We derive their relationship during fast‐mode intervals when the Active Spacecraft Potential Control Devices are off.
H. Laakso, G. Le, R. Pfaff, S. Boardsen, K. Nykyri   +4 more
wiley   +1 more source

Mid-latitude ionosphere during two great geomagnetic storms

Annals of Geophysics, 1996
The ionospheric disturbances observed at many European ionosonde stations in association with the severe geomagnetic storms occurring on 19-20 December 1980 and 11-12 April 1981 were investigated by using the available ionospheric and geomagnetic data ...
L. R. Cander, I. M. Vasiljevic
doaj   +1 more source

Assessment of the Generation of Traveling Ionospheric Disturbances by Solar Terminators

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract The generation of traveling ionospheric disturbances (TIDs) near solar terminators has been predicted, and several studies have reported the detection of TIDs associated with sunrise. However, there are also observations that do not show TID signatures at sunrise.
Hyosub Kil, Andrew K. Sun, Se‐Heon Jeong, Woo Kyoung Lee, Jeong‐Heon Kim, Jiyun Lee   +5 more
wiley   +1 more source

Effects of St. Patrick's Day Geomagnetic Storm of March 2015 and of June 2015 on Low‐Equatorial D Region Ionosphere

Journal of Geophysical Research: Space Physics, 2018
D region effects of the 17–19 March 2015, a St Patrick's Day super geomagnetic storm (Dst = −223 nT), using a navigational transmitter very low frequency (VLF) signal (NWC, 19.8 kHz) recorded at a low‐latitude Indian station, Allahabad (geomag.
A. Maurya, K. Venkatesham, Sushi I Kumar, Rajesh Singh, P. Tiwari, A. Singh   +5 more
semanticscholar   +1 more source

Determining the Magnetopause Location With SMILE‐SXI Using a Constrained Solar Wind Independent SWCX Model

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract The soft X‐ray imager (SXI) on the SMILE mission promises to revolutionize our understanding of the magnetopause by observing solar wind charge exchange emission from the magnetosheath on a global scale. The primary goal of this instrument is to infer the position and shape of the magnetopause from these images.
S. J. Wharton, J. A. Carter, S. Sembay, A. Paganini, V. Maddi, C. Pagani, Z. Clare, A. Samsonov   +7 more
wiley   +1 more source

Variations of energetic particle fluxes after interplanetary shock arrivals and around significant geomagnetic storms observed by low altitude spacecraft

, 2021
Stefan Gohl, F. Němec, M. Parrot
openalex   +1 more source

Studying Ionosphere Responses to a Geomagnetic Storm in June 2015 with Multi-Constellation Observations

Remote Sensing, 2018
The Global Navigation Satellite System (GNSS) observations with global coverage and high temporal and spatial resolution, provide abundant and high-quality Earth-ionosphere observations.
Yang Liu, Lianjie Fu, Jinling Wang, Chunxi Zhang   +3 more
semanticscholar   +1 more source

Characterizing North‐South Ionospheric Gradients During Geomagnetic Storms: A Variogram Enhancement for Wide Area Ionospheric Models

Space Weather, Volume 24, Issue 1, January 2026.
Abstract The intensified solar maximum of Cycle 25 has heightened space weather risks to Global Navigation Satellite Systems (GNSS), where geomagnetic storms critically challenge Positioning, Navigation, and Timing (PNT) availability. Current wide‐area ionospheric models may fail to resolve extreme latitudinal Total Electron Content (TEC) gradients ...
Tong Liu, Yiping Jiang, Bo Chen, Jian Liu, Yufang He, Wu Chen   +5 more
wiley   +1 more source

Localized Increment and Decrement in the Total Electron Content of the Ionosphere as a Response to the April 20, 2018, Geomagnetic Storm

International Journal of Geophysics, 2018
A moderate geomagnetic storm occurred on April 20, 2018. Using vertical total electron content (VTEC) maps provided by the Center for Orbit Determination in Europe, ionospheric responses to the geomagnetic storm could be identified in generated two ...
Carlos Sotomayor-Beltran
doaj   +1 more source