Gigahertz scintillation observations at 22. 0 deg N magnetic latitude in the Indian zone

Journal Article · Sat Jun 01 04:00:00 EDT 1991 · Radio Science; (United States)

DOI:https://doi.org/10.1029/91RS00386· OSTI ID:5514694

Dabas, R S; Banerjee, P K; Bhattacharya, Sumana; Reddy, B M; Singh, J ^[1]

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1. National Physical Laboratory, New Delhi (India)

The morphological aspect of gigahertz nighttime scintillations is considered, including their characteristics, seasonal and diurnal behavior, and dependence on solar activity. In addition, the association of low-altitude scintillations with the equatorial belt width is analyzed by comparing simultaneous observations from two sites taken during equinoctial months of a high-sunspot year. The intensities of scintillation at these locations are compared and discussed from the point of view of the background ionization and the geometry of ray paths. Scintillation activity is found to be suppressed during geomagnetic disturbances but enhanced in the postmidnight hours of the same night for those magnetic storms whose recovery phase starts between the midnight and dawn local time sector. 45 refs.

• OSTI ID: 5514694
• Journal Information: Radio Science; (United States), Journal Name: Radio Science; (United States) Vol. 26; ISSN RASCA; ISSN 0048-6604
• Country of Publication: United States
• Language: English

Related Subjects

640201* -- Atmospheric Physics-- Auroral
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ASIA
COMPARATIVE EVALUATIONS
COORDINATES
DAILY VARIATIONS
DEVELOPING COUNTRIES
EARTH ATMOSPHERE
F REGION
GEOMAGNETIC COORDINATES
INDIA
IONIZATION
IONOSPHERE
MAGNETIC STORMS
MORPHOLOGY
PLANETARY IONOSPHERES
SCINTILLATIONS
SEASONAL VARIATIONS
SOLAR ACTIVITY
SOLAR CYCLE
VARIATIONS
WAVE PROPAGATION