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Observations of ionospheric F layer quadruple stratification near equatorial region
Author(s) -
Tardelli A.,
Fagundes P. R.
Publication year - 2015
Publication title -
journal of geophysical research: space physics
Language(s) - English
Resource type - Journals
eISSN - 2169-9402
pISSN - 2169-9380
DOI - 10.1002/2014ja020653
Subject(s) - stratification (seeds) , ionosphere , low latitude , geology , southern hemisphere , middle latitudes , latitude , atmospheric sciences , climatology , geophysics , geodesy , seed dormancy , botany , germination , dormancy , biology
This paper presents and discusses the occurrence of F layer quadruple stratification (StF‐1, StF‐2, StF‐3, and StF‐4) during southern hemisphere winter season (June, July, and August 2002) and high solar activity condition, which was observed at Palmas (10.3°S, 48.3°W; dip latitude 5.5°S—near equatorial region), Brazilian sector. This is the first time that the formation of F layer quadruple stratification (StF‐1, StF‐2, StF‐3, and StF‐4) has been reported in the South American sector. The StF‐4 has a short lifetime compared with triple stratification/ F 3 layer, and it is antecedent and followed by triple/ F 3 layer stratification.