Results 61 to 70 of about 9,187 (202)

The Fast Borealis Ionosphere: High Time‐Resolution Mapping of Polar Ionospheric Flows With SuperDARN

Earth and Space Science
Recent improvements to hardware for the Super Dual Auroral Radar Network systems have allowed for a much greater control of radar transmit and receive functionalities than previously possible.
D. D. Billett, R. A. Rohel, C. J. Martin, K. A. McWilliams, K. M. Laundal   +4 more
doaj   +1 more source

Ionospheric convection during substorms

, 1995
In this thesis, the plasma flows in the high-latitude nightside ionosphere are investigated. Firstly, the interaction between the solar wind and the Earth’s magnetic field is reviewed with particular attention to the formation of the magnetosphere and the resulting magnetospheric convection.
openaire   +4 more sources

SuperDARN Observations of the Two Component Model of Ionospheric Convection

Journal of Geophysical Research: Space Physics, 2022
AbstractWe use a 20 years database of Super Dual Auroral Radar Network (SuperDARN) observations to investigate the two component model of ionospheric convection. A convection pattern is included in the database if it is derived from at least 250 radar vectors and has a distribution of electric potential consistent with Dungey‐cycle twin vortex flow (a ...
Adrian Grocott, Maria-Theresia Walach, Stephen E. Milan   +2 more
openaire   +2 more sources

Imaging ionospheric inhomogeneities using spaceborne synthetic aperture radar [PDF]

, 2011
We present a technique and results of 2-D imaging of Faraday rotation and total electron content using spaceborne L band polarimetric synthetic aperture radar (PolSAR).
Chapman, B., Freeman, A., Li, Z., Pi, X., Rosen, P.   +4 more
core   +2 more sources

A new method to reconstruct the ionospheric convection patterns in the polar cap [PDF]

Annales Geophysicae, 1999
A new method to reconstruct the instantaneous convection pattern in the Earth's polar ionosphere is suggested. Plasma convection in the polar cap ionosphere is described as a hydrodynamic incompressible flow.
P. L. Israelevich, P. L. Israelevich, A. I. Ershkovich   +2 more
doaj   +1 more source

Cluster Observation of Ion Outflow in Middle Altitude LLBL/Cusp from Different Origins

Magnetochemistry, 2023
The ionosphere is the ionized part of the upper atmosphere that is caused mainly by photoionization by solar extreme ultraviolet (EUV) emission and the atmospheric photochemistry process.
Bin Li, Huigen Yang, Jicheng Sun, Zejun Hu, Jianjun Liu, Xiangcai Chen, Yongfu Wang, Jie Ren, Chao Yue, C. Philippe Escoubet, Qian Wang, Qiugang Zong   +11 more
doaj   +1 more source

Ionospheric plasma convection in the southern hemisphere

Journal of Atmospheric and Terrestrial Physics, 1995
The first ionospheric plasma convection maps ordered by the y- and z-components of the IMF using only data from the southern hemisphere are presented. These patterns are determined from line-of-sight velocity measurements of the Polar Anglo-American Conjugate Experiment (PACE) located at Halley, Antarctica, with the majority of the observations coming ...
Leonard, J.M., Pinnock, M., Rodger, A.S., Dudeney, J.R., Greenwald, R.A., Baker, K.B.   +5 more
openaire   +2 more sources

Central polar cap convection response to short duration southward Interplanetary Magnetic Field [PDF]

Annales Geophysicae, 2000
Central polar cap convection changes associated with southward turnings of the Interplanetary Magnetic Field (IMF) are studied using a chain of Canadian Advanced Digital Ionosondes (CADI) in the northern polar cap.
P. T. Jayachandran, P. T. Jayachandran, J. W. MacDougall   +2 more
doaj   +1 more source

Magnetosphere–Ionosphere Convection as a Compound System [PDF]

Space Science Reviews, 2007
Convection is the most fundamental process in understanding the structure of geospace and disturbances observed in the magnetosphere–ionosphere (M–I) system. In this paper, a self-consistent configuration of the global convection system is considered under the real topology as a compound system.
openaire   +1 more source

A numerical model of the ionospheric signatures of time-varying magnetic reconnection: III. Quasi-instantaneous convection responses in the Cowley-Lockwood paradigm [PDF]

Annales Geophysicae, 2006
Using a numerical implementation of the cowlock92 model of flow excitation in the magnetosphere-ionosphere (MI) system, we show that both an expanding (on a ~12-min timescale) and a quasi-instantaneous response in ionospheric convection to the onset ...
S. K. Morley, S. K. Morley, M. Lockwood
doaj   +1 more source