A review of the basic principles for proton magnetic resonance sounding measurements

In the last two decades, proton magnetic resonance has emerged as a new geophysical technique allowing direct, noninvasive groundwater investigations from the surface. The theoretical basis and appropriate numerical modelling schemes are presented together with the data acquisition, signal processing, and interpretation aspects. Examples are given with both synthetic and field data. The current state-of-the-art method corresponds to one-dimensional application of the technique and this already offers quite numerous possibilities of application for hydrogeological investigations. (C) 2002 Elsevier Science B.V. All rights reserved.