Results 31 to 40 of about 16,295 (228)

Assessment of the Performance of Ionospheric Models with NavIC Observations during Geomagnetic Storms

, 2020
The paper presents an assessment of the performances of the global empirical models: International Reference Ionosphere (IRI)-2016 and the NeQuick2 model derived ionospheric Total Electron Content (TEC) with respect to the Navigation with Indian ...
balan, hochegger, jakowski, mruthyunjaya, radicella   +4 more
core   +1 more source

An equatorial ionospheric current system.

Journal of geomagnetism and geoelectricity, 1985
From the analysis of the external components of the equinoctial geomagnetic daily variation in Peru it follows that they are generated by a complex current system. In this work it is found that in addition to the global current system and the main electrojet, with I0=0.124Amp/m, it is necessary to include two secondary lateral currents parallel to the ...
L. ROMANELLI, F. A. HIRSCH
openaire   +2 more sources

Investigation of the response time of the equatorial ionosphere in context of the equatorial electrojet and equatorial ionization anomaly [PDF]

Annales Geophysicae, 2011
Equatorial Electrojet (EEJ) and Equatorial Ionization Anomaly (EIA) are two large-scale processes in the equatorial/low latitude ionosphere, driven primarily by the eastward electric field during daytime.
L. Jose, S. Ravindran, C. Vineeth, T. K. Pant, S. Alex   +4 more
doaj   +1 more source

Vertical E × B drift velocity variations and associated low-latitude ionospheric irregularities investigated with the TOPEX and GPS satellite data [PDF]

Annales Geophysicae, 2003
With a well-selected data set, the various events of the vertical E × B drift velocity variations at magnetic-equator-latitudes, the resultant ionospheric features at low-and mid-latitudes, and the practical consequences of these E × B events on ...
I. Horvath, E. A. Essex
doaj   +1 more source

Geomagnetic disturbances on ground associated with particle precipitation during SC [PDF]

, 2010
We have examined several cases of magnetosphere compression by solar wind pressure pulses using a set of instruments located in the noon sector of auroral zone. We have found that the increase in riometric absorption (sudden commencement absorption, SCA)
Honary, F., Kozlovsky, A., Safargaleev, V., Turunen, T., Voronin, A.   +4 more
core   +3 more sources

Metallic ions in the equatorial ionosphere [PDF]

Journal of Geophysical Research, 1973
Four positive ion composition measurements of the equatorial E region made at Thumba, India, are presented. During the day, the major ions between 90 and 125 km are NO(+) and O2(+). A metallic ion layer centered at 92 km is observed, and found to contain Mg(+), Fe(+), Ca(+), K(+), Al(+), and Na(+) ions.
A. C. Aikin, R. A. Goldberg
openaire   +1 more source

The Morphology of Equatorial Plasma Bubbles – a review [PDF]

Journal of Astronomy and Space Sciences, 2015
Plasma bubbles that occur in the equatorial F-region make up one of the most distinguishing phenomena in the ionosphere. Bubbles represent plasma depletions with respect to the background ionosphere, and are the major source of electron density ...
Hyosub Kil
doaj   +1 more source

Effects of electrojet turbulence on a magnetosphere-ionosphere simulation of a geomagnetic storm [PDF]

, 2017
Ionospheric conductance plays an important role in regulating the response of the magnetosphere‐ionosphere system to solar wind driving. Typically, models of magnetosphere‐ionosphere coupling include changes to ionospheric conductance driven by extreme ...
Dimant, Y., Liu, J., Lyon, J.G., Merkin, V., Oppenheim, M., Sitnov, M.I., Stephens, G.K., Toffoletto, F., Wang, W., Wiltberger, M., Zhang, B.   +10 more
core   +1 more source

Saturn’s near-equatorial ionospheric conductivities from in situ measurements [PDF]

Scientific Reports, 2020
AbstractCassini’s Grand Finale orbits provided for the first time in-situ measurements of Saturn’s topside ionosphere. We present the Pedersen and Hall conductivities of the top near-equatorial dayside ionosphere, derived from the in-situ measurements by the Cassini Radio and Wave Plasma Science Langmuir Probe, the Ion and Neutral Mass Spectrometer and
Shebanits, O., Hadid, Lina, Cao, H., Morooka, M. W., Hunt, G. J., Dougherty, M. K., Wahlund, J.-E., Waite Jr., J. H., Müller-Wodarg, I.   +8 more
openaire   +6 more sources

Letter to the editor: Electric field fluctuations (25-35 min) in the midnight dip equatorial ionosphere [PDF]

Annales Geophysicae, 2000
Measurements with a HF Doppler sounder at Kodaikanal (10.2°N, 77.5°E, geomagnetic latitude 0.8°N) showed conspicuous quasi-periodic fluctuations (period 25-35 min) in F region vertical plasma drift, Vz in the interval 0047-0210 IST on the night of 23 ...
J. Hanumath Sastri, J. Hanumath Sastri, J. Hanumath Sastri, H. Luhr, H. Luhr, H. Luhr, H. Tachihara, H. Tachihara, H. Tachihara, T.-I. Kitamura, T.-I. Kitamura, T.-I. Kitamura, J. V. S. V. Rao, J. V. S. V. Rao, J. V. S. V. Rao   +14 more
doaj   +1 more source