Accession Number : AD0670585

Title :   IONOSPHERIC RESEARCH USING SATELLITES.

Descriptive Note : Annual scientific rept. no. 3,

Corporate Author : NATIONAL COMMITTEE FOR SPACE RESEARCH HAIFA (ISRAEL) RADIO OBSERVATORY

Personal Author(s) : Mass,Jonathan ; Houminer,Zwi

Report Date : 29 FEB 1968

Pagination or Media Count : 33

Abstract : Results of measurements of electron content, of ionospheric slab thickness and of scintillations from three low latitude stations are presented. The three stations are Nairobi (Kenya), Kingston (Jamaica), and Haifa (Israel). Measurements were made at the three stations, of the Faraday polarization rotation of radio signals from the ionospheric beacon satellites S-66 and BE-C, during the period March-June 1965. The results show similar diurnal variations of electron content for the three stations, with a ratio of daytime maximum to predawn minimum of 8-10. Large variation in daytime values of electron content appear between Nairobi and Haifa, indicating large latitudinal gradients. The daytime values at Kingston and Haifa differ by about 25%. There are similar results of slab thickness and of scintillation occurrence at Haifa and Kingston, while at Nairobi the slab thickness values are lower and there is an increase in the percentage of scintillation occurrence, in comparison to the other two stations. Results of electron content for the declining phase of the solar cycle for mid-latitude stations show a marked dependence on the sunspot number. Results of electron content at Haifa for the increasing phase of the sunspot cycle show similar relationship between electron content and sunspot number. (Author)

Descriptors :   (*IONOSPHERE, SCIENTIFIC SATELLITES), RADIO SIGNALS, POLARIZATION, SUNSPOTS, ATMOSPHERIC SOUNDING, THICKNESS, DIURNAL VARIATIONS, NAVIGATION SATELLITES, SCINTILLATION, KENYA, JAMAICA, ISRAEL, ELECTRON DENSITY, IONOSPHERIC PROPAGATION, RADIO BEACONS, IONOSPHERIC DISTURBANCES

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE