Results 71 to 80 of about 4,774 (237)

An auroral westward flow channel (AWFC) and its relationship to field-aligned current, ring current, and plasmapause location determined using multiple spacecraft observations [PDF]

, 2007
An auroral westward flow channel (AWFC) is a latitudinally narrow channel of unstable F-region plasma with intense westward drift in the dusk-to-midnight sector ionosphere.
P. M. E. Décréau, Waters, C. L., Parkinson, M. L., Lucek, E. A., Lester, M., Lucek, E., Wild, J. A., J. A. Wild, Décréau, P. M. E., M. L. Parkinson, M. Lester, C. L. Waters, E. A. Lucek   +12 more
core   +1 more source

Introduction to TREx‐ATM V2.0: A Versatile Model of Auroral Transport and Its Effects in the Ionosphere

Earth and Space Science, Volume 13, Issue 7, July 2026.
Abstract Auroral transport models (ATMs) play an important role in quantitative studies of optical auroras, their driving mechanisms, and their effects on the ionosphere and thermosphere. TREx‐ATM was initially developed as the support model for the Transition Region Explorer (TREx) mission, and has gained increasing applications in the community in ...
Jun Liang, E. Donovan, E. Spanswick, C. Gabrielse, D. Chaddock, J. Houghton   +5 more
wiley   +1 more source

Study of auroral forms and electron precipitation with the IRIS, DASI and EISCAT systems [PDF]

, 2002
International audienceSimultaneous observations with the IRIS, DASI and EISCAT systems are employed in the study of the spatial distribution and temporal evolution of auroral forms and precipitation regions during substorm activity.
del Pozo, C. F., N. Stamatiou, Kosch, M. J., M. J. Kosch, Stamatiou, N., F. Honary, Honary, F., C. F. del Pozo   +7 more
core   +1 more source

Analysis of the effect of cosmic noise absorption increase on propagation of auroral hiss to the ground

Solar-Terrestrial Physics
We analyze the effect of changes in the cosmic radio noise absorption in the lower ionosphere on propagation of the auroral hiss to the ground, using observational data from the Lovozero and Tumanny observatories.
Nikitenko Aleksandr, Lebed Olga, Larchenko Aleksey, Fedorenko Yuriy   +3 more
doaj   +1 more source

Development and Validation of Precipitation Enhanced Densities for the Empirical Canadian High Arctic Ionospheric Model

Space Weather, 2021
The Empirical Canadian High Artic Ionospheric Model (E‐CHAIM) provides the four‐dimensional ionosphere electron density at northern high latitudes (>50° geomagnetic latitude).
C. Watson, D. R. Themens, P. T. Jayachandran   +2 more
doaj   +1 more source

Application of Deep Learning and Explainable AI to NIR Auroral Detection in Satellite Time‐Series Images

Space Weather, Volume 24, Issue 7, July 2026.
Abstract In this study, we employ a deep learning approach to detect auroras from near‐infrared (NIR) sequential images captured by the satellite‐based imager, the Enhanced Polar Outflow Probe (e‐POP)/Fast Auroral Imager (FAI). We also apply the Eigen‐Class Activation Map (Eigen‐CAM), an explainable AI technique in a broad sense, as a post‐hoc ...
Junmu Youn, Serin Jeon, Woong Jeon, Se‐Heon Jeong, Jeong‐Heon Kim, Woo Kyoung Lee, Yong‐Jae Moon, Geonhwa Jee   +7 more
wiley   +1 more source

Ground-based observations of the VLF auroral hiss at Lovozero and Barentsburg observatories

Solar-Terrestrial Physics
The paper presents the results of the analysis of auroral hiss bursts, measured at Lovozero and Barentsburg observatories. These points are located on close geomagnetic meridians in the auroral and circumpolar zones.
Nikitenko A. S., Kleimenova N. G., Fedorenko Y. V., Beketova E. B.   +3 more
doaj   +1 more source

Global Effect of Long‐Lasting 07–12 October 2024 Geomagnetic Storms During the Transition From a Strong (G3) to a Severe (G4) on the Geomagnetic Field and Ionospheric Parameters Distribution

Space Weather, Volume 24, Issue 7, July 2026.
Abstract This study investigates the co‐evolution of geomagnetic field disturbances with ionospheric parameters and their characteristic latitudinal signatures by conducting a location and time‐dependent analysis of the 07–12 October 2024 events, to fill crucial gaps in understanding the coupled response of the magnetosphere‐ionosphere system. This has
Yekoye Asmare Tariku
wiley   +1 more source

Artificial periodic irregularities in the auroral ionosphere [PDF]

, 1996
International audienceArtificial periodic irregularities (API) are produced in the ionospheric plasma by a powerful standing electromagnetic wave reflected off the F region.
N. P. Goncharov, Pollari, P., Goncharov, N.P., Matveinen, H., E. Turunen, H. Matveinen, P. Pollari, Rietveld, M., M. T. Rietveld, Turunen, E., Goncharov, N. P., Goncharov, N., Rietveld, M.T.   +12 more
core   +1 more source

A Review on Structure of the Polar Ionosphere

Antarctic Record, 1979
Characteristic features of the structure of the polar ionosphere in the polar cap, auroral oval zone and trough region, and physical processes affecting the polar ionosphere are summarized.
Nobuo MATSUURA
doaj   +1 more source