A Synoptic Study of Scintillations of Ionospheric Origin in Satellite Signals
A Synoptic Study of Scintillations of Ionospheric Origin in Satellite Signals

Author: J. Aarons

Publisher:

Published: 1965

Total Pages: 0

ISBN-13:

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Observations of scintillated 54 Mc signals from the satellite Transit IVA have been made for the past two years at seven laboratories in Europe and one in the U.S. Analysis of these data shows effects at mid-latitudes which are parallel to those found previously in geomagnetically similar areas. Lower latitude observatories show low indices of scintillation and little variation of scintillation index with latitude. High latitude observations show the distinct effects present in auroral regions, high indices being recorded most of the time with the highest being overhead and decreasing to the south. At these latitudes effects of zenith angle are less than those due to latitude variation. At middle and lower latitudes there is a symmetrical zenith angle dependence. Frequency distributions of the indices versus latitude at one location show that at lower latitudes the fall off roughly exponentially from a peak near zero while at higher latitudes the shape of the distribution favors the high indices. (Author).

Low-Frequency Waves and Irregularities in the Ionosphere
Low-Frequency Waves and Irregularities in the Ionosphere

Author: N. D'Angelo

Publisher: Springer Science & Business Media

Published: 2013-12-17

Total Pages: 225

ISBN-13: 9401034028

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During the last week of September 1968, ESRIN (the European Space Research Institute) held the ESRIN-ESLAB Symposium on 'Low-Frequency Waves and Irregularities in the Ionosphere' in Frascati, near Rome. The symposium was attended by about 60 participants, including speakers from most of the ESRO member states, the U.S.A., the U.S.S.R., and Peru. The main topics covered were: (a) observations of ionospheric irregularities by radar scattering, (b) scintillations of satellite signals, (c) geomagnetic micropulsations, and (d) whistlers. Both theoretical and observational aspects were treated. In addition, laboratory results on low-frequency waves in plasmas were discussed, emphasis being given to their possible relevance to low-frequency ionospheric phenomena. Finally, a brief presentation (not included in these proceedings) of the ESRO rocket and satellite program was given by Dr. Pedersen of ESLAB. The symposium provided an exchange of information among workers in closely related fields. It was also valuable in bringing together people whose experience is predominantly in ionospheric observations with others whose field of interest is mainly in plasma physics (theoretical or laboratory) - a combination that seemed particularly appropriate to ESRIN's program and functions.