Applicability of the Linear Model to Interpretation of Magnetic Resonance Soundings

A007 APPLICABILITY OF THE LINEAR MODEL TO INTERPRETATION OF MAGNETIC RESONANCE SOUNDINGS Summary 1 Interpretation of Magnetic Resonance Soundings (MRS) is based on a correct modeling of the magnetic resonance response from groundwater. It is known from nuclear physics that for small flip angles (also called tilt angle) of the nuclear magnetization the spin system is linear and for larger flip angles it is not. Within investigated by MRS volume an alternating magnetic field produced by the surface loop varies by a few orders of magnitude thus producing a large variety of the flip angles of the nuclear magnetization of