2-D GEOELECTRICAL SURVEY FOR THE PRELIMINARY ROUTE OF THE NATURAL GAS PIPELINE INSTALLATION AT ALISTRATI CAVES, N. GREECE

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Published: Jan 1, 2004
DOI: https://doi.org/10.12681/bgsg.16469
A. Atzemoglou
Institute of Geology and Mineral Exploration
P. Tsourlos
Department of Geophysics, School of Geology, Aristotle University of Thessaloniki
C. Vasiliadis
Institute of Geology and Mineral Exploration
Abstract

An extensive 2-D geoelectrical survey was carried out at the Alistrati caves, prefecture of Serres, Ν. Greece, as part of a preliminary route survey for the planned natural gas pipeline that was about to cross these regions of Northern Greece. Geophysics can play a significant role in this procedure. Synthetic modeling and inversion examples presented in this work support the above claim. The dipole-dipole array was used with inter-electrode spacing of 5m and maximum dipole separation of n equal to 8 dipole spacing. Two groups of personnel, including geophysicists and technicians, worked for one month to realize this survey. The number of measurements is really enormous for such type of research. A total of 7616 measurements (952 electrode points) were obtained. The area of investigation was chosen on the basis of the local geological conditions, which appeared to favor the existence of void structures. The survey line had a length of approximately 5 km. The 2-D geoelectrical survey proved to be an effective tool for delineating the subsurface lithology and structure of the surveyed area. Most importantly, the technique proved successful in locating highly karstified areas and can be used to aid void mapping as well as to provide useful information about their general setting.

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  • Geophysics
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References
Atzemoglou, A. (1997). Paleomagnetic results from N. Greece and their contribution in the interpretation of the Tertiary geodynamic evolution of the area. D.Phil. Thesis, Aristotle University of Thessaloniki, Greece (in Greek).
Atzemoglou, A. (1998). Geophysical survey at Alistrati (Serres county). IGME, Internal report (in Greek).
Constable, S. Parker, R., and Constable C. (1987). Occam's inversion: A practical algorithm for generating smooth models from electromagnetic sounding data. Geophysics, 52, 289-300.
Dahlin, T. (2001). The development of DC resistivity imaging techniques. COMPUTERS & GEOSCIENCES , 27 (9), 1019-1029
Geological map of Greece, Prosotsani sheet, IGME (1988).
Ivanov, R. (1981). The deep-seated central_Rhodope nappe and the interference tectonics of the Rhodope crystalline basement. Geol. Balkan., 11, 47-66.
Kilias, A. and Moundrakis, D. (1990). Kinematics of the crystalline sequences in the Western Rhodope massif. Geol. Rhodopica, 2, 100-116.
Tsourlos, Ρ (1995). Modelling, interpretation and inversion of multi-electrode resistivity survey data. D.Phil. Thesis, University of York, U.K.
Tsourlos, P., Szymanski, J. and Tsokas, G. (1998). A smoothness constrained algorithm for the fast 2-D inversion of DC resistivity and induced polarization data. Journal of the Balkan Geophysical Society, 1,1, 3-13.
Ward, S. (1989). Resistivity and induced polarization methods: in Investigations in Geophysics no 5, Geotechnical and Environmental Geophysics vol I, éd. S. Ward, SEG, Tulsa, 147-189.
Vasiliadis, C. (1997). Geophysical survey at the region of Alistrati (Serres County) across the preliminary route of natural gas pipeline, section of Kavala. IGME, Internal report (in Greek).
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