Издательство Wiley по журналам "Journal of Geophysical Research: Space Physics"
Отображаемые элементы 1-20 из 3497
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(1981-11-01)A slowly varying background noise in the 4.5‐kHz band observed at Lake Vanda, Antarctica (81°S, INV), has most of the features one would expect of Čerenkov radiation from the precipitating soft electrons that constitute ...
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(1981-05-01)Electron density irregularities detected with coherent radars in the equatorial electrojet have been studied mostly at wavelengths between 3 and 10 m. For low drift velocities they have been interpreted by the cross‐field ...
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(1981-05-01)New multifrequency measurements with a HF radar in the equatorial electrojet have extended the range of wavelengths investigated during high drift velocity conditions to 50 m. It is shown that the so‐called type 1 spectra ...
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(1980-08-01)Airglow meridional intensity gradients (MIG) that moved from east to west with the antisolar meridian have been observed during times of considerable magnetic activity. The magnitude of the gradient is around 0.1 R/km or ...
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(1994-09-01)During 1957, as part of the program of the International Geophysical Year, the University of Iowa conducted a survey of cosmic ray intensity with equipment on balloon‐launched rockets (“rockoons”) over the range of geomagnetic ...
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(1981-12-01)Measurements of ion current, electron temperature, and density and values of satellite potential from the U.S. Air Force Satellite S3‐2 together with ion composition measurements from the Atmosphere Explorer (AE‐E) satellite ...
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(1986-12-01)Magnetic field variations measured by the GOES 2 and 3 satellites are examined at the time when auroras pulsate in their conjugate ionospheric regions. No hydromagnetic waves are found to be related to the pulsating auroras ...
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(1992-04-01)The absolute direct differential and integral electron excitation cross sections for the atomic nitrogen 4So → 2p44P (λ1135 Å) transition have been measured at incident energies of 30, 50, and 100 eV. The differential cross ...
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(1996-10-01)The absolute direct differential and integral electron excitation cross sections for the forbidden N I 4S0 → 2D (λ5200 Å) transition have been measured at incident energies from 5 to 30 eV. The differential cross section ...
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(1988-06-01)A new apparatus designed specifically for the study of electron scattering from unstable species at very low incident energies has been constructed and put into operation. Remeasurement of the O I ³P → ³S0 (1304 Å) ...
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(1988-06-01)We report the absolute differential and integral cross sections of the forbidden atomic oxygen ³P → ³P, 10.99 eV, and ³P → 5P, 10.76 eV, transitions for incident electron impact energies of 13.87 to 100 eV. These measurements ...
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(1992-12-01)The O I (³P → ¹D) transition cross section has been remeasured for a new set of incident energies. In addition, a new O2 (a ¹Δg ← X ³Σg−) reference cross section set has been used to normalize the relative measurements. ...
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(1992-08-01)Differential and integral electron excitation cross sections for the O2 a¹Δg ← X³Σg− transition at 0.97 eV have been measured as a function of incident electron energy from 2.6 to 28.6 eV. Differential cross sections (DCS) ...
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(1986-03-01)The absolute differential electron scattering cross section for the atomic oxygen (³P → ³So) transition (1304 Å) has been measured at 100‐eV electron impact energy. The experimental apparatus was a variable angle and ...
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(1986-12-01)Previously reported measurements of the absolute experimental electron excitation cross section for the O (³P → ³S°) transition (1304 Å) at 100 eV have been extended to a wide range of incident energies from 16.5 to 200 ...
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(1988-01-01)Absolute differential and integral direct electron excitation cross sections have been measured for the three most intense autoionizing ³P → ³P° transitions in atomic oxygen (878, 792, and 770 Å) and the first five members ...
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(1986-06-01)A rare‐gas ionization chamber was used to obtain an accurate measurement of the absolute solar EUV flux in the 50‐ to 575‐Å region. The instrument, operating in total and near‐total absorption, was flown on a solar‐pointing ...
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(1992-01-01)Simultaneous ground‐based observations of narrowband and broadband VLF radio waves and of cloud‐to‐ground lightning were made at widely spaced locations during the 1987 Wave‐Induced Particle Precipitation (WIPP) campaign, ...
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(1986-03-01)On November 28, 1983, between 1638 UT and 1642 UT, the HILAT satellite moving approximately along the noon meridian passed over northeastern Canada and encountered the dayside high latitude cleft. During the passage an ...
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(1992-03-01)Fluxes of energetic ions with energies exceeding 100 keV were observed upstream of the bow shock of comet Halley by the Tünde instrument which was on board the VEGA 1 spacecraft. Downstream of the shock, ion fluxes in the ...
Отображаемые элементы 1-20 из 3497