Open AccessPreliminary results on the ionospheric structure at dawn time observed during HRIS campaigns
Author(s) -
P. Dominici,
C. Bianchi,
Ljiljana R. Cander,
Giorgiana De Franceschi,
Carlo Scotto,
B. Zolesi
Publication year - 1994
Publication title -
annals of geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 60
eISSN - 2037-416X
pISSN - 1593-5213
DOI - 10.4401/ag-4235
Subject(s) - ionosphere , sunrise , geology , geodesy , interval (graph theory) , meteorology , fading , geophysics , atmospheric sciences , telecommunications , computer science , geography , mathematics , decoding methods , combinatorics
Several campaigns of ionospheric vertical soundings with short-time interval between them (HRIS) have been recently performed at the ionospheric station in Rome. Some preliminary results concerning periods around local sunrise are presented. A cIear fading effect, due to the defocusing phenomena in the upper ionosphere, has been observed in different season