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39.287  Articles
1 of 3.930 pages  |  10  records  |  more records»
In this research, the seasonal Optimal Reliable Frequency (ORF) variations between different transmitter/receiver stations have been determined. Mosul, Baghdad, and Basra have been chosen as tested transmitting stations that located in the northern, cente... see more

In this research, the seasonal Optimal Reliable Frequency (ORF) variations between different transmitter/receiver stations have been determined. Mosul, Baghdad, and Basra have been chosen as tested transmitting stations that located in the northern, cente... see more

The last three solar cycles have been considered for a study on the variation of the ionospheric parameter foF2 during the solar minimum. Hourly observations recorded by the ionospheric station of Rome have been considered for the years 1985, 1986, 1987, ... see more

The last three solar cycles have been considered for a study on the variation of the ionospheric parameter foF2 during the solar minimum. Hourly observations recorded by the ionospheric station of Rome have been considered for the years 1985, 1986, 1987, ... see more

Solar radiation has the most important role in periodical variation of terrestrial atmospheric properties. Under unperturbed ionospheric conditions, the solar Lya line has a dominant influence on ionization processes in the lowest ionospheric layer, the s... see more

The last three solar cycles have been considered for a study on the variation of the ionospheric parameter foF2 during the solar minimum. Hourly observations recorded by the ionospheric station of Rome have been considered for the years 1985, 1986, 1987, ... see more

Hourly values of the critical frequency of the ionospheric F region, foF2, obtained at Chongqing ionospheric observatory(geographic 29.50N, 106.40E), China, during the interval of 1977 to 1997 (solar cycle 21 and 22) havebeen used to investigate the depen... see more

Seasonal and solar cycle variations of the quasi-two- and five-day oscillation amplitudes off f0F2 are evaluated by moving periodogram analysis. The 23 year time series (1964-1986) of fOF2 hourly values of Kaliningrad (54.7°N, 20.62°E), covering the solar... see more

We present a thermodynamic model to simulate the atmospheric temperature and pressure, the regolith temperature and the polar CO2 ice caps vertical thickness and horizontal extent of Mars. This is done using the temperatures of the atmosphere and regolith... see more

1 of 3.930 pages  |  10  records  |  more records»