Zobrazeno 1 - 10 of 14 pro vyhledávání: '"W. R. Hoegy"'
1
Nonlinear whistlers: Implications for 100 Hz electric fields observed in the Venus ionosphere
Autor: W. R. Hoegy, K. D. Cole
Publikováno v: Journal of Geophysical Research: Space Physics. 102:14615-14623
Conditions on the electric field of an electromagnetic wave in a plasma are found which make the wave magnetic field comparable in strength to the ambient field. The conditions arise from higher-order forces than are used in linear theory. It is foun
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::32376c7166003d101451278467a4b48f
https://doi.org/10.1029/97ja00564
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2
The 100 Hz electric fields observed on Pioneer Venus Orbiter and a case against the whistler hypothesis for them
Autor: K. D. Cole, W. R. Hoegy
Publikováno v: Journal of Geophysical Research: Space Physics. 101:21785-21793
Without invoking the whistler hypothesis, but assuming they are not man-made it is shown (1) that the 100 Hz electric fields observed on the Pioneer Venus orbiter in the lower ionosphere (below 160 km, at night) can be so intense that they would prod
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::40ea7e0a9f01191e635c36a258a97a7f
https://doi.org/10.1029/96ja01822
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3
Variability of dayside electron temperature at Venus
Autor: W. R. Hoegy, K. K. Mahajan, Rajib Paul, S. Ghosh
Publikováno v: Geophysical Research Letters. 21:77-80
Langmuir probe measurements on Pioneer Venus Orbiter show that electron temperature (Te) profiles exhibit two distinct regions. The lower, but more extended region is in the main ionosphere where Te increases slowly with altitude. The other, less ext
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c7088eb9be3ddec4a17c26787057b6ed
https://doi.org/10.1029/93gl03384
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4
High latitude field aligned light ion flows in the topside ionosphere deduced from ion composition and plasma temperatures
Autor: W. R. Hoegy, Joseph M. Grebowsky, T. C. Chen
Publikováno v: Journal of Atmospheric and Terrestrial Physics. 55:1605-1617
Using a comprehensive ionospheric data set comprised of all available ion composition and plasma temperature measurements from satellites, the vertical distributions of ion composition and plasma temperatures are defined from middle latitudes up into
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1a0adb690ac7611601576bef2d95b012
https://doi.org/10.1016/0021-9169(93)90137-n
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7
Electric currents in the subsolar region of the Venus lower ionosphere
Autor: K. D. Cole, W. R. Hoegy
Publikováno v: Journal of Geophysical Research. 99:8791
The ion and electron momentum equations, along with Ampere's law, are solved for the ion and electron drift velocities and the electric field in the subsolar Venus ionosphere, assuming a partially ionized gas and a single ion species having the ion m
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3f0d42e1123ad8b9a7277763b490fd38
https://doi.org/10.1029/94ja00203
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8
Solar maximum-minimum extremes in the summer noontime polar capFregion ion composition: The measurements
Autor: W. R. Hoegy, T. C. Chen, J. M. Grebowsky
Publikováno v: Journal of Geophysical Research. 95:12269
All available, computer-readable, thermal ion composition measurements from Earth-orbiting satellites have been put into a common computer file format for easy manipulation. The ion measurements obtained under solar maximum conditions at polar cap la
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bbe29eca8a8ec2d91e333efb4e9d2fae
https://doi.org/10.1029/ja095ia08p12269
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9
The poleward edge of the mid-latitude trough—its formation, orientation and dynamics
Autor: Alan S. Rodger, J.D Winningham, Larry H. Brace, W. R. Hoegy
Publikováno v: Journal of Atmospheric and Terrestrial Physics. 48:715-728
Data from the Advanced Ionospheric Sounder (AIS) deployed at Halley, Antarctica (76-deg S, 27-deg W; L = 4.2) and the Dynamics Explorer-2 spacecraft (DE-2) are used to investigate several aspects of the formation processes and dynamics of the polewar
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::32bc772bf8386eeff91b483d64f2d0d9
https://doi.org/10.1016/0021-9169(86)90021-8
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10
Ionosphere-thermosphere momentum coupling at solar maximum and solar minimum from DE-2 and AE-C data
Autor: Larry H. Brace, K. M. Lee, J. J. Ponthieu, Timothy L. Killeen, G. R. Carignan, W. R. Hoegy
Publikováno v: Physica Scripta. 37:447-453
DE-2 and AE-C measurements of plasma and neutral densities were used to derive time constants for momentum transfer (MT) to neutrals from ions in the high-latitude thermosphere. The MT time constants for solar cycle maximum (DE-2) and for solar cycle
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2d6818ac3c37bf67210aaf37475015fa
https://doi.org/10.1088/0031-8949/37/3/028
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