Publications Scientifiques
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Item Structural edges delimitation from gravity data using the wavelet transform(2013) Ouadfeul, Sid-Ali; Aliouane, LeilaItem Aeoromagnetic data analysis using the 2D continuous wavelet transform(2011) Aliouane, Leila; Ouadfeul, Sid-Ali; Boudella, AmarItem Structural Boundaries delimitation from gravity data using the wavelet transform(2012) Aliouane, Leila; Ouadfeul, Sid-Ali; Boudella, AmarItem On seismic ground roll filtering using the wavelet transform and neural network(2013) Benaissa, Zahia; Benaissa, Abdelkader; Ouadfeul, Sid-Ali; Aliouane, Leila; Boudella, AmarItem Wavelet-based fractal analysis of interMagnet observatories data(2013) Ouadfeul, Sid-Ali; Aliouane, LeilaItem Multiscale analysis of gravity data using the 2D directional continuous wavelet transform with a case studyfrom Hoggar shield(Springer, 2016) Ouadfeul, Sid-Ali; Aliouane, LeilaItem Extracting the S1 lamb mode from the impact echo signal(2009) Bedaou, Safia; Argoul, Pierre; Abraham, Odile; Point, NathalieItem Structural boundaries delimitation from geomagnetic data using the continuous wavelet transform. Application to Hoggar (Algeria)(Springer-Verlag, 2012) Ouadfeul, S.; Eladj, S.; Aliouane, LeilaThe main goal of the proposed work is to delineate structural boundaries in a very complex geology environment using the spatial and statistical properties of the potential field data. The analysis is performed using magnetic anomaly of the total field data over In Ouzzal, an Archaean north–south elongated block belonging to the Hoggar (Algeria). This region is geologically and geophysically very poorly known except some localized areas. The intrinsic properties of high-frequency signals and the related causative sources are explored, thanks to two-dimensional continuous wavelet transform. The obtained results, represented by spatial distribution of the maxima of the modulus of the wavelet transform at each scale, clearly show that the major magnetic singularities of the field may be related to geological features. Comparison with the Euler’s deconvolution solutions exhibits a very good correlation. Even though where geological structures are known, our method shows better resolution and accuracy. The proposed multiscale method proves to be more powerful, easy to use, and versatile where classical methods of potential field interpretation fail or are very constraining. However, work is still ongoing to try to better and fully characterize the causative sources of the potential fields