Results 91 to 100 of about 5,979 (206)

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

A preliminary comparison of Na lidar and meteor radar zonal winds during geomagnetic quiet and disturbed conditions

, 2018
We investigate the possibility that sufficiently large electric fields and/or ionization during geomagnetic disturbed conditions may invalidate the assumptions applied in the retrieval of neutral horizontal winds from meteor and/or lidar measurements. As
Kumar, G. Kishore, Tyssøy, H. Nesse, Williams, Bifford P.   +2 more
core   +1 more source

Variations of geomagnetic H, D, and Z field intensities on quiet days at west african latitudes

Moldavian Journal of the Physical Sciences, 2009
In the framework of the French participation to the International Equatorial Electrojet Year (IEEY), a network of ten electro-magnetic stations was installed at African latitudes. These stations measured digitally the three components of the magnetic
Obiekezie, T., Okeke, F.
doaj  

Observed effects of a geomagnetic storm on an RTK positioning network at high latitudes

Journal of Space Weather and Space Climate, 2012
At high latitudes, above 60° N, in the vicinity of the auroral oval, the ionosphere frequently experiences disturbed conditions that impact GNSS-based services.
Jacobsen Knut Stanley, Schäfer Sebastian   +1 more
doaj   +1 more source

Responses of Field‐Aligned Currents and Equatorial Electrojet to Sudden Decrease of Solar Wind Dynamic Pressure During the March 2023 Geomagnetic Storm

Geophysical Research Letters
We present the observations of field‐aligned currents and the equatorial electrojet during the 23 March 2023 magnetic storm, focusing on the effect of the drastic decrease of the solar wind dynamic pressure occurred during the main phase.
Guan Le, Guiping Liu, Endawoke Yizengaw, Chin‐Chun Wu, Yihua Zheng, Sarah Vines, Natalia Buzulukova   +6 more
doaj   +1 more source

Variation with interplanetary sector of the total magnetic field measured at the OGO 2, 4, and 6 satellites [PDF]

Variations in the scalar magnetic field (delta B) from the polar orbiting OGO 2, 4, and 6 spacecraft are examined as a function of altitude for times when the interplanetary magnetic field is toward the sun and for times when the interplanetary magnetic ...
Langel, R. A.
core   +1 more source

The convection electrojet and the substorm electrojet

Annales Geophysicae
Enhancements in the auroral electrojets associated with magnetospheric substorms result from those in either the electric field or the ionospheric conductivities, or both.
Y. Kamide, R. Nakamura
doaj  

Large-Scale Traveling Atmospheric and Ionospheric Disturbances Observed in GUVI With Multi-Instrument Validations. [PDF]

Geophys Res Lett, 2022
Bossert K, Paxton LJ, Matsuo T, Goncharenko L, Kumari K, Conde M.   +5 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

the two‐component auroral electrojet

Geophysical Research Letters, 1982
By using the AL index for one year as well as some of the IMS meridian chain records, the longitudinal center of the substorm westward electrojet is examined. Although on the average AL is most often dominated by stations located near 0300 MLT, the westward electrojet during the expansion and maximum phase of substorms tends to be centered in the ...
openaire   +1 more source