NDLI: GPR and ERT combined analysis on the basis of advanced wavelet methodology: The Montagnole testing area

Content Provider	IEEE Xplore Digital Library
Author	Alperovich, L. Eppelbaum, L. Dumoulin, J. Zheludev, V. Soldovieri, F. Proto, M. Bavusi, M. Loperte, A.
Copyright Year	2013
Description	Author affiliation: IFSTTAR, LUNAM Univ., Bouguenais, France (Dumoulin, J.) \|\| Dept. of Geophys., Atmos. & Plan. Sci, Tel Aviv Univ., Tel Aviv, Israel (Alperovich, L.; Eppelbaum, L.) \|\| Ist. per il Rilevamento Elettromagnetico dell' Ambiente (IREA), Consiglio Naz. delle Ric., Naples, Italy (Soldovieri, F.) \|\| Sch. of Comput. Sci., Tel Aviv Univ., Tel Aviv, Israel (Zheludev, V.) \|\| Ist. di Metodologie per l'Analisi Ambientale (IMAA), Consiglio Naz. delle Ric., Tito Scalo, Italy (Proto, M.; Bavusi, M.; Loperte, A.)
Abstract	Ground Penetrating Radar (GPR) and Electric Resistivity Tomography (ERT) are well assessed and accurate geophysical methods for the investigation of subsurface geological sections. In this paper, we present the joint exploitation of these methods al the Montagnole (French Alps) experimental site with the final aim to study and monitor effects of possible catastrophic rockslides in transport infrastructures. It is known that factors as the ambiguity of geophysical field examination, the complexity of geological scenarios, and the low signal-to-noise ratio affect the possibility to build reliable physical-geological models of the investigated subsurface structure. Here, we applied for the GPR and ERT methods at Montagnole site, the recent advances in the wavelet theory and data mining. Wavelet approach was specifically used to achieve enhanced (e.g., coherence portraits) images resulting from the integration of the different geophysical fields. This methodology based on the matching pursuit combined with wavelet packet dictionaries permitted us to extract desired signals in different physical-geological conditions, even in presence of strongly noised data. Such tools as complex wavelets were employed to the coherence portraits, combined GPR-ERT coherency orientation angle, to name a few, enable performing non-conventional operations of integration and correlation in subsurface geophysics. The estimation of the above mentioned parameters proved useful not only for location of buried inhomogeneties but also for a rough estimation of their electromagnetic and related properties. Therefore, the combination of the above approaches has allowed to set-up a novel methodology, which may enhance reliability and confidence of each separate geophysical method and their integration.
Starting Page	1
Ending Page	6
File Size	3193628
Page Count	6
File Format	PDF
ISBN	9781479909377
e-ISBN	9781479909407
DOI	10.1109/IWAGPR.2013.6601525
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-07-02
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	complex Gaussian function Histograms Ground penetrating radar Geology Montagnole wavelet analysis Coherence integration coherency Wavelet analysis Vectors Sensors
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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