MRS contribution to hydrogeological system parametrization

Abstract

ABSTRACT The contribution of magnetic resonance sounding (MRS) to hydrogeological system parametrization is based on the hydrogeological interpretation of the two MRS output parameters, MRS water content ( ) and decay‐time constant ( ). An overview of the hydrogeological parameters that can be defined with MRS is presented and is followed by a discussion on the nature, applicability and limitations of the relationships between MRS and hydrogeological parameters. The most important contributions to hydrogeological system parametrization are the estimations of effective porosity, specific yield and specific retention. The most important contributions are the estimations of hydraulic conductivity and aquifer transmissivity. The hydrogeological parameters obtained from parametrization are relatively well physically defined but insufficiently verified, where as the parameters obtained from have already largely been verified but they are based on an empirical relationship. All the hydrogeological parameters derived from and and obtained from a 1D MRS experiment, are integrated over a large subsurface volume of up to 10 6 m 3 .