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http://hdl.handle.net/2122/10190
Authors: | Pezzopane, M.* Pignalberi, A.* Pietrella, M.* |
Title: | On the solar cycle dependence of the amplitude modulation characterizing the mid-latitude sporadic E layer diurnal periodicity | Journal: | Journal of atmospheric and solar-terrestrial physics | Series/Report no.: | /137(2016) | Publisher: | Elsevier Science Limited | Issue Date: | Jan-2016 | DOI: | 10.1016/j.jastp.2015.11.010 | Keywords: | Sporadic E layer Mid-latitude ionosphere Tidal and Planetary wave Nonlinear interaction |
Subject Classification: | 01. Atmosphere::01.02. Ionosphere::01.02.99. General or miscellaneous 01. Atmosphere::01.02. Ionosphere::01.02.02. Dynamics 01. Atmosphere::01.02. Ionosphere::01.02.04. Plasma Physics 01. Atmosphere::01.02. Ionosphere::01.02.05. Wave propagation 01. Atmosphere::01.02. Ionosphere::01.02.06. Instruments and techniques 05. General::05.07. Space and Planetary sciences::05.07.01. Solar-terrestrial interaction 05. General::05.07. Space and Planetary sciences::05.07.02. Space weather |
Abstract: | Spectral analyses are employed to investigate how the diurnal periodicity of the critical frequency of the sporadic E (Es) layer varies with solar activity. The study is based on ionograms recorded at the ionospheric station of Rome (41.8°N, 12.5°E), Italy, from 1976 to 2009, a period of time covering three solar cycles. It was confirmed that the diurnal periodicity is always affected by an amplitude modulation with periods of several days, which is the proof that Es layers are affected indirectly by planetary waves through their non linear interaction with atmospheric tides at lower altitudes. The most striking features coming out from this study is however that this amplitude modulation is greater for high-solar activity than for low-solar activity. |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | |
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Jastp_2016_Es_draft.pdf | full draft paper | 3.18 MB | Adobe PDF | View/Open |
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