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Cosmic ray ionization in the D region at sunrise: Evidence from VLF phase measurements
Author(s) -
Abdu M. A.,
Ananthakrishnan S.,
Krishnan B. A.,
Massambani O.
Publication year - 1973
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs008i008p00733
Subject(s) - sunrise , cosmic ray , ionization , astrophysics , phase (matter) , physics , cosmic cancer database , very low frequency , ionosphere , d region , astronomy , atmospheric sciences , ion , quantum mechanics
A temporary phase recovery observed on long‐distance VLF propagation paths at sunrise is shown to be associated with cosmic‐ray ionization. Simultaneous measurements of the phase carried out at Atibaia, Säo Paulo, and Jaguaräo, Rio Grande de SuI, appear to demonstrate a latitudinal effect in this phenomenon.