Title :
VLF-LF propagation measurements during the 11 August 1999 solar eclipse
Author :
Fleury, R. ; Lassudrie-Duchesne, P.
Author_Institution :
ENST de Bretagne, Brest, France
Abstract :
A survey of the VLF-LF spectrum evolution has been conducted during the 11 August 1999 solar eclipse in the vicinity of the totality region. The measurements consisted of amplitude spectrum acquisitions in the frequency band 10-80 kHz with a repetition period of 1 min. The field strength received from various transmitters could thus be monitored both during the eclipse and control days. The time signatures of the eclipse appear to be highly variable according to the frequency and radio path characteristics. The main features of the eclipse signatures are interpreted by using a waveguide propagation model
Keywords :
D-region; Earth-ionosphere waveguide; ionospheric disturbances; radiowave propagation; solar eclipses; 10 to 80 kHz; AD 1999 08 11; D region; VLF-LF propagation measurements; amplitude spectrum acquisitions; control days; eclipse signatures; frequency band; frequency characteristics; ionosphere disturbances; radio path characteristics; received field strength; repetition period; solar eclipse; time signatures; totality region; transmitters; waveguide propagation model;
Conference_Titel :
HF Radio Systems and Techniques, 2000. Eighth International Conference on (IEE Conf. Publ. No. 474)
Conference_Location :
Guildford
Print_ISBN :
0-85296-727-6
DOI :
10.1049/cp:20000208
