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. The representation of compressional seismic waves velocity elds from geological models through numerical parameters has a strong geophysical importance, because, it makes possible to quantify such qualitative models, allowing its mathematical manipulation. In this way, the parameterization by Haar wavelet series may be seen as an attractive alternative. Keywords: parameterization, Haar wavelet series, pyramid algorithm, seismic tomography, seismic velocity eld, traveltime data, Metropolis method. RESUMO. A representacao de campos de velocidades sismicas compressionais, atraves de parâmetros numericos, e de importância basica na geofisica, pois torna possivel a quanticacao de modelos, antes qualitativos, permitindo assim que sejam matematicamente manipulados. A parametrizacao por serie ondaleta Haar pode ser vista como uma alternativa atrativa para quanticar tais modelos... Palavras-chave: parametrizacao, serie ondaleta Haar, inversao sismica tomograca, campo de velocidade sismica, dados de tempo de trânsito, metodo Metropolis.

SEISMIC TOMOGRAPHY USING METROPOLIS METHOD OF VELOCITY FIELDS PARAMETERIZED BY HAAR WAVELET SERIES