Lara P. E. E., Fernandes C. A. R., Inza A., Mars J. I., Métaxian Jean-Philippe, Dalla Mura M., Malfante M. (2020). Automatic multichannel volcano-seismic classification using machine learning and EMD. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 13, p. 1322-1331. ISSN 1939-1404.
Titre du document
Automatic multichannel volcano-seismic classification using machine learning and EMD
Lara P. E. E., Fernandes C. A. R., Inza A., Mars J. I., Métaxian Jean-Philippe, Dalla Mura M., Malfante M.
Source
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020,
13, p. 1322-1331 ISSN 1939-1404
This article proposes the design of an automatic classifier using the empirical mode decomposition (EMD) along with machine learning techniques for identifying the five most important types of events of the Ubinas volcano, the most active volcano in Peru. The proposed method uses attributes from temporal, spectral, and cepstral domains, extracted from the EMD of the signals, as well as a set of preprocessing and instrument correction techniques. Due to the fact that multichannel sensors are currently being installed in seismic networks worldwide, the proposed approach uses a multichannel sensor to perform the classification, contrary to the usual approach of the literature of using a single channel. The presented method is scalable to use data from multiple stations with one or more channels. The principal component analysis method is applied to reduce the dimensionality of the feature vector and the supervised classification is carried out by means of several machine learning algorithms, the support vector machine providing the best results. The presented investigation was tested with a large database that has a considerable number of explosion events, measured at the Ubinas volcano, located in Arequipa, Peru. The proposed classification system achieved a success rate of more than 90 %.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020]
;
Géophysique interne [066]
;
Informatique [122]
