Article : Groundwater investigation on sand dunes area in southern part of Vietnam by magnetic resonance sounding
Authors : Yamasaki, K.Department of Earth and Planetary Sciences, Faculty of Science, Kobe University, Nada, Kobe, Japan, firstname.lastname@example.org, Teisseyre, R.Institute of Geophysics, Polish Academy of Sciences, Warszawa, Poland, email@example.com, Li, C.School of Computer Engineering and Science, Shanghai University, Shanghai, China, firstname.lastname@example.org, Majdański, M.Institute of Geophysics, Polish Academy of Sciences, Warszawa, Poland, email@example.com, Trojanowski, J.Institute of Geophysics, Polish Academy of Sciences, Warszawa, Poland, firstname.lastname@example.org, Öztürk, S.Gümüşhane University, Department of Geophysics, Gümüşhane, Turkey, email@example.com, Chattopadhyay, A.Department of Applied Mathematics, Indian School of Mines, Dhanbad, India, firstname.lastname@example.org, Beziuk, G.Wroclaw University of Technology, Institute of Telecommunications and Acoustics, Wrocław, Poland, email@example.com, Giang, N.V.Institute of Geophysics, VAST, Hanoi, Vietnam, firstname.lastname@example.org,
Abstract : In the last five years, magnetic resonance sounding (MRS), as a non-invasive geophysical method, has emerged as a new technique for ground water investigation in Vietnam. In this paper, we present the general theoretical basis of this method together with acquisition, processing, and interpretation of the MRS data. We show a case study of MRS surveys in sand dunes area in order to characterize aquifers situated in the southern part of Vietnam. From the interpretation of MRS soundings we delimited an aquifer layer in the subsurface with strong lateral variations for which we determined the depth at 44 m and water content between 3 per cent and 9.5 per cent. The longitudinal relaxation constant T*1 is about 250 m s, while the transverse relaxation T*2 is between 150–200 m s. That indicates fine to medium grain size and thus low to medium hydraulic permeability. These results are confirmed by the observations from the well LK1 between 45 to 70 m. The results of other MRS measurements showed the presence of a low water bearing aquifer and were confirmed by the observations in two other wells.
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Qute : Yamasaki, K. ,Teisseyre, R. ,Li, C. ,Majdański, M. ,Trojanowski, J. ,Öztürk, S. ,Chattopadhyay, A. ,Beziuk, G. ,Giang, N.V. ,Giang, N.V. , Groundwater investigation on sand dunes area in southern part of Vietnam by magnetic resonance sounding. Acta Geophysica Vol. 60, no. 1/2012