ISSN 1729-3790 | Segunda época | RNPS 1933
Revista CIENCIAS DE LA TIERRA Y EL ESPACIO
Instituto de Geofísica y Astronomía CUBA
Artículo 8.
(pág. 62-71)
ABOUT THE USE OF HAAR MOTHER WAVELET TRANSFORM TO DENOISING RESISTIVITY PHOSPHATE “DISTURBANCES” MAP (SIDI CHENNANE, MOROCCO)
Saad Bakkali (1), Mahacine Amrani (2).
(1) Earth Sciences Department. Faculty of Sciences and Techniques, Abdelmalek Essaadi University, Tangier, Morocco. saad.bakkali@menara.ma.
(2) Engineering Process Department. Faculty of Sciences and Techniques, Abdelmalek Essaadi University, Tangier, Morocco. amrani.mahacine@menara.ma.
Abstract
Wavelet transforms originated in geophysics in the early 1980s for the analysis of sKey words: Wavelet, seismic.eismic signals. Since then, significant mathematical advances in wavelet theory have enabled a suite of applications in diverse fields. In geophysics the power of wavelets for analysis of non stationary processes that contain multiscale features, detection of singularities, analysis of transient phenomena, fractal and multifractal processes, and signal compression is now being exploited for the study of several processes including resistivity survey. The present paper deals with denoising Moroccan phosphate “disturbances” resistivity data map using the Haar wavelet mother transform method. The results show a significant suppression of the noise and a very good smoothing and recovery of the resistivity anomalies signal.
Key words: Wavelet, seismic.