Results 251 to 260 of about 24,293 (260)

Signatures of polar cap patches in ground ionosonde data

Radio Science, 1997
The interpretation of localized density structures in the high‐latitude ionosphere as observed by ground ionosondes is a task that is complicated by the complexity of those structures and by the variety of processes that ionosonde waves undergo. To aid interpretation, we have performed a first‐order analysis of the shapes of traces seen in ionosonde ...
H. G. James, J. W. MacDougall
openaire   +1 more source

Polar cap F layer patches: Structure and dynamics

Journal of Geophysical Research: Space Physics, 1986
Coordinated measurements of F region plasma patches were conducted on February 3/4, 1984, from Thule and Sondrestrom, Greenland. Optical, ionosonde, amplitude scintillation, total electron content (TEC), and incoherent scatter radar measurements were combined to reveal several new aspects of the structure and transport of these localized regions of ...
E. J. Weber, J. A. Klobuchar, J. Buchau, H. C. Carlson, R. C. Livingston, O. de la Beaujardiere, M. McCready, J. G. Moore, G. J. Bishop   +8 more
openaire   +1 more source

Modeling the formation of polar cap patches using large plasma flows

Radio Science, 1996
Recent measurements made with the Sondrestrom incoherent scatter radar have indicated that the formation of polar cap patches can be closely associated with the flow of a large plasma jet. In this paper, we report the results of a numerical study to investigate the role of plasma jets on patch formation, to determine the temporal evolution of the ...
C. E. Valladares, D. T. Decker, R. Sheehan, D. N. Anderson   +3 more
openaire   +1 more source

Direct Observations of a Polar Cap Patch Formation Associated With Dayside Reconnection Driven Fast Flow

Journal of Geophysical Research: Space Physics, 2020
Jiaen Ren, Shasha Zou, Elizabeth Kendall
exaly  

Interhemispheric study of polar cap patch occurrence based on Swarm in situ data

Journal of Geophysical Research: Space Physics, 2017
Andres Spicher, Lasse Boy Novock Clausen, Wojciech J Miloch   +2 more
exaly  

Day‐night coupling by a localized flow channel visualized by polar cap patch propagation

Geophysical Research Letters, 2014
L R Lyons, Kjellmar Oksavik, Joran Idar Moen   +2 more
exaly  

On the symmetry of ionospheric polar cap patch exits around magnetic midnight

Journal of Geophysical Research: Space Physics, 2015
Lasse Boy Novock Clausen
exaly  

On the entry and transit of high‐density plasma across the polar cap

Journal of Geophysical Research, 2010
Kjellmar Oksavik, Mark Lester
exaly  

Sharpening our thinking about polar cap ionospheric patch morphology, research, and mitigation techniques

Radio Science, 2012
Herbert C Carlson
exaly  

Perennial water ice identified in the south polar cap of Mars

Nature, 2004
Jean-Pierre Bibring, François Poulet, Aline Gendrin   +2 more
exaly