Results 51 to 60 of about 501,910 (164)
Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.Abstract Equatorial plasma bubbles (EPBs) pose significant challenges to trans‐ionospheric radio communication and navigation systems. Because of their disruptive effects, evaluating and predicting them is key for the development of space systems. The influence of geomagnetic activity on EPBs remains unclear, partly due to limited low‐latitude neutral ...
Gilda de Lourdes González +6 more
wiley +1 more source
, 2015 The CHAMP magnetic field variations during international quiet days of low solar activity period 2008-2009 are investigated. The present paper reports the existence of frequency-peaks < 20 mHz in the compressional component of the magnetic field in ...
Sinha, A. K. +2 more
core +1 more source
Earth, Planets and Space, 2013 Yamazaki et al. (2009) reported two strong negative crochets during midday (solar flares on 8 June 2000, 3 July 2002), along the Circum-pan pacific magnetometers network (CPMN).
R. Rastogi, H. Chandra, K. Yumoto
semanticscholar +1 more source
Space Weather, Volume 24, Issue 1, January 2026.Abstract Using data from a cluster of ground‐based global navigation satellite system, we observed spatially extended enhanced ROTI over the European longitudes during a weak geomagnetic storm (Dst ≈ ${\approx} $ −50 nT) on 4 November 2023. The enhanced ROTI is extended over an extensive geographical latitudinal range of 46°N.
Chandan Kapil +4 more
wiley +1 more source
Geomagnetic field variations at the equatorial electrojet station in Sri Lanka, Peredinia [PDF]
, 2004 The paper discusses the variations of the horizontal (<i>H</i>), vertical (<i>Z</i>) and eastward (<i>Y</i>) components of the geomagnetic field at Peredinia (PRD), an electrojet station in Sri Lanka, with the time of ...
K. Kitamura, R. G. Rastogi, T. Kitamura
core +1 more source
Solar flares induced D-region ionospheric and geomagnetic perturbations [PDF]
, 2015 The D-region ionospheric perturbations caused by solar flares occurred during January 2010 to February 2011, a low solar activity period of current solar cycle 24, have been examined on NWC transmitter signal (19.8 kHz) recorded at an Indian low ...
Gokani, S. +9 more
core +1 more source
Journal of Geophysical Research: Space Physics, 2018 Ten years of geomagnetic field observations by the CHAMP satellite are used for a systematic investigation of the counter equatorial electrojet (CEJ). For the first time a comprehensive characterization of CEJ is presented.
Yunliang Zhou +3 more
semanticscholar +1 more source
Space Weather, Volume 24, Issue 1, January 2026.Abstract We employed zonal wind data from Thermosphere, Ionosphere, Mesosphere Energetics and Dynamics Doppler Interferometer, equatorial electrojet (EEJ) measurements from Jicamarca (12°S, 77°W), and global ionospheric total electron content (TEC) maps to investigate the effects of ultra‐fast Kelvin waves (UFKW) with zonal wavenumbers 2 and 3 ...
Ruidi Sun +6 more
wiley +1 more source
Earth, Planets and Space, 2019 The September 6–10, 2017 two-step magnetic storm was caused by an X9 solar flare followed by a CME. The SSC that occurred at 23:43 UT on day 06 when Sym-H reached about 50 nT, was due to a sudden increase in solar wind.
Eurico R. de Paula +10 more
doaj +1 more source
Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.Abstract Valley region irregularities (VRIs) have been previously investigated using radar, ionosonde, and rocket‐borne in situ observations. In this paper, based on a joint observational experiment by lidar and radars performed in Hainan, China, we report a case of low‐latitude VRIs generated in association with uplifted metallic ions for the first ...
Jing Jiao +13 more
wiley +1 more source