Results 71 to 80 of about 3,685 (224)
Rocket observations of electron-density irregularities in the equatorial ionosphere below 200 km [PDF]
Nike Apache rockets carring instrumentation to measure electron density and its fine structure in the equatorial ionosphere were launched from Chilca, Peru in May and June 1975.
Klaus, D. E., Smith, L. G.
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The International Equatorial Electrojet Year
Eos, Transactions American Geophysical Union, 1992 During its sixth scientific assembly in Exeter, United Kingdom, the International Association of Geomagnetism and Aeronomy (IAGA) designated September 1991–March 1993 as the International Equatorial Electrojet Year (IEEY). During this period, intensive and coordinated campaigns on the equatorial electrojet (EEJ) and related aeronomic phenomena are ...
openaire +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
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Equatorial electrojet dependence on solar activity in the Southeast Asia sector
Antarctic Record, 2013 A:The equatorial electrojet (EEJ) is a current system caused by the enhanced ionospheric conductivity near the dayside magnetic dip equator. We examined the dependence of the EEJ on solar activity, represented by the 10.7 cm solar radio flux (F10.7). For
Nurul Shazana Abdul Hamid +3 more
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Earth, Planets and Space, 2019 The response of equatorial ionosphere–thermosphere system to the X3.8 solar flare of January 17, 2005 has been studied using the coordinated measurements of GPS-derived Total Electron Content (TEC), OI 630.0 nm dayglow and magnetic field measurements ...
S. G. Sumod, Tarun Kumar Pant
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Latitudinal extent of the equatorial electrojet.
Journal of geomagnetism and geoelectricity, 1985 Theory is developed for estimating the latitudinal extent of the equatorial electrojet and the worldwide Sq currents including their return paths. It gives good estimates of the latitude of the worldwide Sq current focus as 36±2 degrees, and the latitudinal extent of the worldwide Sq current including its return paths as 84±3 degrees.
C. A. ONWUMECHILI, P. C. OZOEMENA
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Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.Abstract This study, using the peak electron density of Ionospheric F‐region from the Global‐scale Observations of the Limb and Disk reports, for the first time, a unique phenomenon: the rapid reversal of the intensity of the Equatorial Ionization Anomaly (EIA) crests between the hemispheres during the main phase of 23 April 2023, geomagnetic storm ...
K. Shimna +5 more
wiley +1 more source
Preliminary results of measurements of sq currents and the equatorial electrojet near peru [PDF]
Measurement of electric current, magnetic field, and electron density in ionosphere using Nike-Apache sounding ...
Cahill, L. J., Jr., Maynard, N. C.
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A study on the variability of ionospheric total electron content over the East African low-latitude region and storm time ionospheric variations [PDF]
, 2016 The variation of total electron content (TEC) derived from the International Global Navigation Satellite Systems Service receiver (formerly IGS) over the East African low-latitude region from up to 12 observation stations for the period 2012 was analyzed.
Baki, P. +4 more
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Geophysical Research Letters, Volume 52, Issue 23, 16 December 2025.Abstract We incorporate field line curvature (FLC) scattering into a kinetic ring current model two‐way coupled with a global magnetospheric MHD model to investigate its role in SYM‐H prediction and global magnetospheric dynamics. FLC scattering reduces plasma pressure in regions where the ion gyroradius is comparable to the local FLC radius.
Suk‐Bin Kang +5 more
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