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We show in this report the momentum flux content input in the\udmesosphere due to relatively fast and small scale gravity waves\ud(GWs) observed through OH airglow images. The acquisition of OH NIR\udimages was carried out in Brazil at Brasilia (14.8° S,\ud47.6° W) and Cariri (7.4° S, 36.5° W) from\udSeptember 2005 to November 2005 during the SpreadFEx Campaign.\udHorizontal wind information from meteor radar was available in\udCariri only. Our findings showed strong wave activity in both sites,\udmainly in Cariri. High wave directionality was also observed in both\udsites during SpreadFEx, which have been observed by other\udinvestigators using different analysis' techniques and different\udtypes of data during the campaign. We discuss also the possibility\udof plasma bubble seeding by gravity waves presenting spatial and\udtemporal scales estimated with our novel analysis technique during\udthe SpreadFEx campaign

Gravity wave amplitudes and momentum fluxes inferred from OH airglow intensities and meteor radar winds during SpreadFEx