A Semi Automated Method for Laminated Sediments Analysis | Zendy

Mapathé Ndiaye | Zendy; Eric Davaud | Zendy; Daniel Arizteguí | Zendy; M Fall | Zendy

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A Semi Automated Method for Laminated Sediments Analysis

Author(s) -

Mapathé Ndiaye,

Eric Davaud,

Daniel Arizteguí,

M Fall

Publication year - 2012

Publication title -

international journal of geosciences

Language(s) - English

Resource type - Journals

eISSN - 2156-8367

pISSN - 2156-8359

DOI - 10.4236/ijg.2012.31023

Subject(s) - varve , geology , wavelet , software , signal (programming language) , spectral analysis , proxy (statistics) , wavelet transform , pattern recognition (psychology) , mineralogy , computer science , artificial intelligence , paleontology , sediment , machine learning , physics , quantum mechanics , spectroscopy , programming language

We developed a software performing laminae counting, thickness measurements, spectral and wavelet analysis of laminated sediments embedded signal. We validated the software on varved sediments. Varved laminae are automatically counted using an image analysis classification method based on K-Nearest Neighbors (KNN) algorithm. In a next step, the signal corresponding to varved black laminae thickness variation is retrieved. The obtained signal is a good proxy to study the paleoclimatic constraints controlling sedimentation. Finally, the use of spectral and wavelet analysis methods on the variation of black laminae thickness revealed the existence of frequencies and periods which can be linked to known paleoclimatic events

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