A discussion on D and E region winds over Europe - Results of E-layer drift measurements at De Bilt

At the beginning of 1969 an elaborate programme of E-layer drift measurements was started at De Bilt. The closely spaced receiver method is being used in combination with an on-line analogue computer which plots the polarity-, auto- and cross-correlation functions of the fading signals. The following results over 1969 and a part of 1970 are presented and discussed: mean hourly values of the N and E components for each month; harmonic analysis and prevailing winds, comparison between results obtained from the intersection of the correlation curves and from the time shifts for maximum cross-correlation; and comparison with the results from other stations at about the same latitude.

A discussion on D and E region winds over Europe - The measurement of ionospheric drifts over east Siberia, U.S.S.R

The results of an investigation of horizontal ionospheric drifts over Irkutsk (52° N, 104° E) by the closely spaced receiver method (D 1) are presented for 1958—9. The nature of diurnal, seasonal and solar-cycle variations of ionospheric drift patterns are discussed. The measurement of ionospheric drifts was carried out during 1968—9 by the D1 method (2.2 MHz) operating simultaneously at vertical and slightly oblique incidence. The results of this experiment are discussed too.