Published

2008-01-01

Automatic spline-smoothing approach applied to denoise Moroccan resistivity data phosphate deposit “disturbances” map

Lissage automatique par spline fonction applique au “debruitage” de la carte des resistivites des “derangements” des phosphates Marocains

DOI:

https://doi.org/10.15446/ing.investig.v28n1.14877

Keywords:

smoothing, automatic, spline, resistivity, Schlumberger, phosphate, Morocco (en)
résistivité, spline, optimal, lissage, phosphate, « dérangement », Maroc (es)

Authors

  • Saad Bakkali Mohammadia School of Engineers
  • Lahcen Bahi Mohammadia School of Engineers

This paper focuses on presenting a method which is able to filter out noise and suppress outliers of sampled real functions under fairly general conditions. The automatic optimal spline-smoothing approach automatically determines how a cubic spline should be adjusted in a least-squares optimal sense from an a priori selection of the number of points defining an adjusting spline, but not their location on that curve. The method is fast and easily allowed for selecting several knots, thereby adding desirable flexibility to the procedure. As an illustration, we apply the AOSSA method to Moroccan resistivity data phosphate deposit “disturbances'' map. The AOSSA smoothing method is an efficient tool in interpreting geophysical potential field data which is particularly suitable in denoising, filtering and analyzing resistivity data singularities. The AOSSA smoothing and filtering approach was found to be consistently useful when applied to modeling surface phosphate “disturbances”.

Dans le présent travail, nous présentons une nouvelle méthode de “débruitage” et de filtrage utilisant des fonctions  analytiques échantillonnées. A partir d’un échantillon de points d’ajustement de la fonction spline utilisée, la méthode dite «Automatic Optimal Spline Smoothing Approach » ou AOSSA permet de déterminer automatiquement  l’ajustement par fonction spline d’ordre 3 au sens des moindres carrés, sans pour autant connaître la localisation  des points de l’échantillon sur la courbe. Cette méthode rapide permet facilement de choisir différents points de  lissage avec une certaine flexibilité de la procédure. En guise d’illustration nous avons appliqué la méthode AOSSA  à la carte des données d’anomalies de résistivités correspondantes aux « dérangements » des phosphates maro cains. La méthode de lissage et de filtrage AOSSA s’est avérée être un outil potentiellement efficace pour l'optimisation des surfaces correspondantes aux zones des « dérangements » des phosphates marocains.

References

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How to Cite

APA

Bakkali, S. and Bahi, L. (2008). Automatic spline-smoothing approach applied to denoise Moroccan resistivity data phosphate deposit “disturbances” map. Ingeniería e Investigación, 28(1), 133–136. https://doi.org/10.15446/ing.investig.v28n1.14877

ACM

[1]
Bakkali, S. and Bahi, L. 2008. Automatic spline-smoothing approach applied to denoise Moroccan resistivity data phosphate deposit “disturbances” map. Ingeniería e Investigación. 28, 1 (Jan. 2008), 133–136. DOI:https://doi.org/10.15446/ing.investig.v28n1.14877.

ACS

(1)
Bakkali, S.; Bahi, L. Automatic spline-smoothing approach applied to denoise Moroccan resistivity data phosphate deposit “disturbances” map. Ing. Inv. 2008, 28, 133-136.

ABNT

BAKKALI, S.; BAHI, L. Automatic spline-smoothing approach applied to denoise Moroccan resistivity data phosphate deposit “disturbances” map. Ingeniería e Investigación, [S. l.], v. 28, n. 1, p. 133–136, 2008. DOI: 10.15446/ing.investig.v28n1.14877. Disponível em: https://revistas.unal.edu.co/index.php/ingeinv/article/view/14877. Acesso em: 29 mar. 2024.

Chicago

Bakkali, Saad, and Lahcen Bahi. 2008. “Automatic spline-smoothing approach applied to denoise Moroccan resistivity data phosphate deposit ‘disturbances’ map”. Ingeniería E Investigación 28 (1):133-36. https://doi.org/10.15446/ing.investig.v28n1.14877.

Harvard

Bakkali, S. and Bahi, L. (2008) “Automatic spline-smoothing approach applied to denoise Moroccan resistivity data phosphate deposit ‘disturbances’ map”, Ingeniería e Investigación, 28(1), pp. 133–136. doi: 10.15446/ing.investig.v28n1.14877.

IEEE

[1]
S. Bakkali and L. Bahi, “Automatic spline-smoothing approach applied to denoise Moroccan resistivity data phosphate deposit ‘disturbances’ map”, Ing. Inv., vol. 28, no. 1, pp. 133–136, Jan. 2008.

MLA

Bakkali, S., and L. Bahi. “Automatic spline-smoothing approach applied to denoise Moroccan resistivity data phosphate deposit ‘disturbances’ map”. Ingeniería e Investigación, vol. 28, no. 1, Jan. 2008, pp. 133-6, doi:10.15446/ing.investig.v28n1.14877.

Turabian

Bakkali, Saad, and Lahcen Bahi. “Automatic spline-smoothing approach applied to denoise Moroccan resistivity data phosphate deposit ‘disturbances’ map”. Ingeniería e Investigación 28, no. 1 (January 1, 2008): 133–136. Accessed March 29, 2024. https://revistas.unal.edu.co/index.php/ingeinv/article/view/14877.

Vancouver

1.
Bakkali S, Bahi L. Automatic spline-smoothing approach applied to denoise Moroccan resistivity data phosphate deposit “disturbances” map. Ing. Inv. [Internet]. 2008 Jan. 1 [cited 2024 Mar. 29];28(1):133-6. Available from: https://revistas.unal.edu.co/index.php/ingeinv/article/view/14877

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