Aplicação da técnica de tomografia nas camadas de aeroluminescência.

Abstract

The present work has investigated the feasibility of study gravity waves from the application of the Tomographic Reconstruction Methods in imager data of the atmospheric airglow. For this purpose has been used the Stochastic Inversion Theory to formulate the tomography method, which has used Gaussian distributions of probabilities to model the problem variables. From prior knowledge about the behavior of vertical airglow layers, information from "a priori model" also modeled by Gaussian statistics reconstruction was added in order to regulate the intensities obtained in the final solution. Simulations with observations of wave structures in artificial emissions were implemented in order to verify the ability of Stochastic Tomography to infer the parameters of the phenomena. Tomographic Reconstruction has also been applied to image data obtained from imagers installed in Monteiro - Brazil (7°50' S, 37°04' W) and Sao Joao do Cariri - Brazil (7°22' S, 36°31' W). The results of Tomography using real data were compared with parameters inferred by the wave dispersion relation of gravity waves using wind data from the meteor radar, temperature data from satellite TIMED/SABER and data obtained by spectral analysis of the images. The comparison showed that the observation of the structures from two imagers do not provide sufficient condition for application of Tomographic Methods. Simulations have indicated that a set of three observation devices can provide satisfactory condition for application of Tomographic Reconstruction in the study of phenomena in MLTI.