Zobrazeno 1 - 9
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pro vyhledávání: '"E. L. Hagg"'
Autor:
E. L. Hagg, G. H. Hanson
Publikováno v:
Canadian Journal of Physics. 32:790-798
Examination of records taken in rapid succession at ionospheric stations in Northern Canada has revealed three distinctive types of echoes corresponding to clouds of ionization in motion. One type is ascribed to clouds of sporadic E moving horizontal
Autor:
E. L. Hagg
Publikováno v:
Canadian Journal of Physics. 41:195-199
Study of data from the DRTE satellite on electron densities at the satellite and at the F-layer maximum reveals little day-to-day variation at 1000 km but large variations at the F-layer maximum, depending on the degrees of latitude. A magnetic distu
Publikováno v:
Journal of Geophysical Research. 70:4347-4356
The apparent reflection coefficients of the ionosphere for high frequency radio waves have been studied using vertical incidence pulse amplitude data obtained at Prince Rupert. The F-layer first-hop reflection coefficient increases in magnitude as th
Autor:
E. L. Hagg
Publikováno v:
Canadian Journal of Physics. 45:27-36
Alouette II topside ionograms recorded at high latitudes (L ≈ 6 or greater) and high altitudes (1 500–3 000 km) show an interference pattern between the electron gyro and the electron hybrid resonance spikes, when the electron density at the sate
Autor:
W. Rolfe, E. L. Hagg
Publikováno v:
Canadian Journal of Physics. 41:220-233
Both great-circle and off-path propagation modes have been investigated on a transatlantic path. Measurements of signal strength and azimuthal bearing were made at Ottawa, Canada, on the 41.5-Mc/s BBC TV sound channel transmissions during the winter
Autor:
E. L. Hagg, D. B. Muldrew
Publikováno v:
Canadian Journal of Physics. 44:925-939
Characteristics of an extraordinary wave trace recently identified on Alouette I topside ionograms, and called the remote resonance trace by Hagg (1966), are discussed in detail. From the observations it has been deduced that the radio energy associa
Autor:
E. L. Hagg
Publikováno v:
Nature. 210:927-929
A NOVEL cyclotron resonance phenomenon associated with the second harmonic of the electron gyrofrequency 2fH is sometimes observed on Alouette topside ionograms. The phenomenon occurs remote from the satellite and will consequently be called the ‘r
Autor:
E. S. Warren, E. L. Hagg
Publikováno v:
Nature. 220:466-468
THE theory of electrostatic waves is highly developed1–3. The propagation of electrostatic waves has been observed in laboratory plasmas by measuring the time required for a pulse of these waves to travel between antennae imbedded in the plasma4. R
Autor:
E. Warren, E. L. Hagg
Publikováno v:
Nature. 181:34-35
IT has been established that radio waves can be propagated between Ottawa in Canada and Slough in England by a single ionospheric reflexion. The one-hop mode of propagation is seen on the accompanying ionogram (Fig. 1) at frequencies between 27 and 3