Results 91 to 100 of about 3,685 (224)

Empirical Model of Equatorial ElectroJet (EEJ) Using Long‐Term Observations From the Indian Sector

Space Weather
The Equatorial Electrojet (EEJ) is one of the important near‐earth space weather phenomena which exhibits significant diurnal, seasonal and solar activity variations.
S. Tulasi Ram, M. Ankita, B. Nilam, S. Gurubaran, Manoj Nair, Gopi K. Seemala, P. S. Brahmanandam, A. P. Dimri   +7 more
doaj   +1 more source

Evidence of an upper ionospheric electric field perturbation correlated with a gamma ray burst. [PDF]

Nat Commun, 2023
Piersanti M, Ubertini P, Battiston R, Bazzano A, D'Angelo G, Rodi JG, Diego P, Zeren Z, Ammendola R, Badoni D, Bartocci S, Beolè S, Bertello I, Burger WJ, Campana D, Cicone A, Cipollone P, Coli S, Conti L, Contin A, Cristoforetti M, De Angelis F, De Donato C, De Santis C, Di Luca A, Fiorenza E, Follega FM, Gebbia G, Iuppa R, Lega A, Lolli M, Martino B, Martucci M, Masciantonio G, Mergè M, Mese M, Morbidini A, Neubüser C, Nozzoli F, Nuccilli F, Oliva A, Osteria G, Palma F, Palmonari F, Panico B, Papini E, Parmentier A, Perciballi S, Perfetto F, Perinelli A, Picozza P, Pozzato M, Rebustini G, Recchiuti D, Ricci E, Ricci M, Ricciarini SB, Russi A, Sahnoun Z, Savino U, Scotti V, Shen X, Sotgiu A, Sparvoli R, Tofani S, Vertolli N, Vilona V, Vitale V, Zannoni U, Zoffoli S, Zuccon P.   +70 more
europepmc   +1 more source

Observations of the Earth's magnetic field from the Space Station: Measurement at high and extremely low altitude using Space Station-controlled free-flyers [PDF]

Simulation studies established that the main (core), crustal and electrojet components of the Earth's magnetic field can be observed with greater resolution or over a longer time-base than is presently possible by using the capabilities provided by the ...
Frawley, J. J., Stefanik, M., Webster, W., Jr.   +2 more
core   +1 more source

Equatorial electrojet in east Brazil longitudes

Journal of Earth System Science, 2010
This paper describes the morphology of the equatorial electrojet (EEJ) along 45°W longitude in east Brazil, where the ground magnetic (dip) equator is associated with the largest declination in the world. Daily range of the horizontal field (ΔH), as expected, was largest at the station in the chain closest to the dip equator, Sao Luiz (inclination −0 ...
R. G. Rastogi, H. Chandra, K. Yumuto
openaire   +2 more sources

Equatorial Counter-Electrojet and Magnetic Pulsations.

Journal of geomagnetism and geoelectricity, 1997
The signal amplitudes in the Hx component of magnetic pulsations undergo significant enhancement at the dip equator during intervals of Equatorial Electrojet (EEJ), the enhancement attaining a peak value during prenoon hours. On the other hand, it is shown in this study, that the enhancement peak which occurs during prenoon hours on EEJ days shifts ...
T. S. Sastry, S. V. S. Sarma
openaire   +2 more sources

Secondary Irregularities in the Equatorial Electrojet [PDF]

Instrumentation techniques and autocorrelation analysis procedures for secondary equatorial electrojet ...
Bowles, K. L., Cohen, R.
core   +1 more source

Rocket experiments for spectral estimation of electron density fine structure in the auroral and equatorial ionosphere and preliminary results [PDF]

Sounding rockets equipped to monitor electron density and its fine structure were launched into the auroral and equatorial ionosphere in 1980 and 1983, respectively. The measurement electronics are based on the Langmuir probe and are described in detail.
Smith, L. G., Tomei, B. A.
core   +1 more source

Radar profiles of the equatorial electrojet

Geophysical Research Letters, 1976
The electrojet current deduced from radar measurements was found in the past to present large E‐W variations near the coast of Peru. New measurements in Africa indicate that the electrojet shows no anomalous variations with longitude in Central Africa while a large E‐W asymmetry is detected in East Africa near the Red Sea.
M. Crochet, C. Poman, C. Hanuise
openaire   +1 more source

Does the Dayside Equatorial Ionospheric Electric Field Respond to Isolated Substorms?

Geophysical Research Letters
Substorms are known to induce global magnetosphere‐ionosphere coupling. However, the specific response of the dayside ionospheric electric field and its influence on the equatorial electrojet (EEJ) remain controversial.
M. Hayashi, A. Yoshikawa, S. Ohtani
doaj   +1 more source

Equatorial ionospheric currents derived from MAGSAT data [PDF]

The MAGSAT data on the three component's of the geomagnetic field are subjected to ring current correction and crustal anomaly elimination near the dip equator.
Roy, M.
core   +1 more source