Comportamento sazonal da ocorrência de bolhas de plasma na região tropical do Brasil observado pelo imageamento do airglow na emissão do OI 630,0 nm

Plasma bubble zonal drift characteristics observed by airglow images over Brazilian tropical region

“…In the last three decades, the plasma bubbles have been largely studied in Brazil. Some aspects are well known, like the seasonality of occurrence (e.g., Sahai et al, 1998;Pimenta et al, 2001b;Sahai et al, 1999Sahai et al, , 2000Sobral et al, 2002;Paulino et al, 2007) and the relationship with the pre-reversal enhancement (PRE) after sunset (e.g., Batista et al, 1996;Abdu, 2005). The dynamic has also been exhaustively studied (e.g., Fagundes et al, 1995a,b;Santana et al, 2001;Pimenta et al, 2003a,b;Abalde et al, 2004;Arruda et al, 2006;Sobral et al, 2009Sobral et al, , 2011Paulino et al, 2010), and it is known that, during the magnetic quiet time, the plasma bubble zonal drifts are strongly coupled to the thermospheric wind, and are dependent on the solar cycle (e.g., Sahai et al, 2004).…”

Optical observations of plasma bubble westward drifts over Brazilian tropical region

“…From then on many studies were done using optical technique to evaluate the airglow intensity in the presence of the plasma bubble (e.g., Fagundes et al, 1995b), to evaluate the thermospheric dynamics with the bubbles formations (e.g., Fagundes et al, 1995a), to study the seasonality of plasma bubbles occurrence (e.g., Sahai et al, 1998Sahai et al, , 1999Sahai et al, , 2000Pimenta et al, 2001;Sobral et al, 2002;Paulino et al, 2007), and to study the plasma bubbles dynamics (e.g., Mendillo et al, 2001;Santana et al, 2001;Otsuka et al, 2002;Martinis et al, 2003;Pimenta et al, 2003;Abalde et al, 2004;Arruda et al, 2006;Makela et al, 2006;Sobral et al, 2009).…”