Title :
Observation of Medium Scale Traveling Ionospheric Disturbances (MSTIDs) in the low latitudes Brazilian sector using ionosonde data in comparison with optical measurements
Author :
Amorim, Danielle C M ; Pimento, A.A.
Author_Institution :
Nat. Inst. for Space Res. (INPE, São José dos Campos, Brazil
Abstract :
In this paper we report observations of MSTIDs in the low latitudes Brazilian sector using ionograms obtained by a digisonde DGS256 and all-sky images of OI 630 nm airglow emission. Both instruments are installed at Cachoeira Paulista (22.7°S, 45° W, 13°S MLAT). Ionograms show occurrence of spread-F and a sharp rise of the ionospheric F-layer at the same time as dark band structures propagating northwestward are seen on all-sky images. Here, we show a study based on ionogram analysis in order to investigate occurrences of MSTIDs during solar maximum, since they are not observed on all-sky images during such period.
Keywords :
F-region; airglow; ionospheric disturbances; ionospheric measuring apparatus; ionospheric techniques; Cachoeira Paulista; DGS256 digisonde; MSTID observations; airglow emission; dark band structures; ionogram analysis; ionosonde data; ionospheric F-layer; low latitudes Brazilian sector; medium scale traveling ionospheric disturbances; optical measurements; solar maximum; Couplings; Electric fields; Electrodynamics; Imaging; Instruments; Ionosphere; Plasmas;
Conference_Titel :
General Assembly and Scientific Symposium, 2011 XXXth URSI
Conference_Location :
Istanbul
Print_ISBN :
978-1-4244-5117-3
DOI :
10.1109/URSIGASS.2011.6050978
