Results 81 to 90 of about 6,013 (205)

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.
core   +1 more source

Solar‐Wind Triggering of Substorm Onset During the May 2024 Superstorm: Coordinated Global Observations and Simulations

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Substorms are often described by a loading‐unloading cycle, where onset follows gradual accumulation of solar wind magnetic flux in the magnetosphere. Yet observations indicate that intense substorms can also be directly driven, though the underlying mechanism remains unresolved.
Yong Ren, Minghui Zhu, Lei Dai, Walter Gonzalez, Shan Wang, Chi Wang, C. Philippe Escoubet, Jiaojiao Zhang, Qiugang Zong   +8 more
wiley   +1 more source

Investigation of electrical currents in the auroral ionosphere [PDF]

Two papers are presented on the investigation of electrical currents in the auroral ionosphere: (1) The Relationship Between Field-Aligned Current Carried by Suprathermal Electrons, and the Auroral Arc; and (2) Ionospheric Electrical Currents in the Late
Arnoldy, R. L.
core   +1 more source

Specifics of magnetotelluric studies in Antarctica

Записки Горного института
One of the priority areas of scientific research in Antarctica is the study of its deep structure. Most of the continent is covered with a thick ice sheet, so the main geoscientific data are acquired using geophysical methods, among which magnetotelluric
Tatyana V. Davydkina, Andrei A. Yankilevich, Anna N. Naumova   +2 more
doaj  

Investigation of Space Weather Effects by Swarm Magnetic Field Data: The SFAC Index

Geophysical Research Letters
The three Swarm satellites provide an optimum, low Earth orbit (LEO) and multi‐spacecraft platform, to explore for the first time the local correlation between field‐aligned currents (FACs), auroral electrojets, and magnetic perturbations at the Earth's ...
Octav Marghitu, Adrian Blăgău, Vlad Constantinescu, Malcolm W. Dunlop, Guram Kervalishvili, Jan Rauberg, Jesper W. Gjerloev   +6 more
doaj   +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.
core   +1 more source

Scaling in long term data sets of geomagnetic indices and solar wind ϵ as seen by WIND spacecraft [PDF]

, 2003
We study scaling in fluctuations of the geomagnetic indices (AE, AU, and AL) that provide a measure of magnetospheric activity and of the ε parameter which is a measure of the solar wind driver.
Angelopoulos, B. Hnat, Chang, Chapman, Consolini, Consolini, Edwards, Freeman, G. Rowlands, Hnat, Hnat, Hnat, Katsev, Kovács, Lepping, Lui, M. P. Freeman, Mantegna, N. W. Watkins, Ogilvie, S. C. Chapman, Sitnov, Takalo, Takalo, Tsurutani, Ukhorskiy, Uritsky, Vörös, Watkins   +28 more
core   +3 more sources

Large regional variability in geomagnetic storm effects in the auroral zone. [PDF]

Sci Rep, 2023
Kärhä O, Tanskanen EI, Vanhamäki H.
europepmc   +1 more source

Unveiling the combined effects of neutral dynamics and electrodynamic forcing on dayside ionosphere during the 3-4 February 2022 "SpaceX" geomagnetic storms. [PDF]

Sci Rep, 2023
Kakoti G, Bagiya MS, Laskar FI, Lin D.
europepmc   +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