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MRS contribution to hydrogeological system parametrization
Author(s) -
Lubczynski M.,
Roy J.
Publication year - 2005
Publication title -
near surface geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.639
H-Index - 39
eISSN - 1873-0604
pISSN - 1569-4445
DOI - 10.3997/1873-0604.2005009
Subject(s) - hydrogeology , geology , parametrization (atmospheric modeling) , aquifer , hydraulic conductivity , depth sounding , soil science , hydrology (agriculture) , geophysics , groundwater , geotechnical engineering , physics , soil water , oceanography , quantum mechanics , radiative transfer
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 ( Φ MRS) and decay‐time constant ( T d ). 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 importantΦ MRScontributions to hydrogeological system parametrization are the estimations of effective porosity, specific yield and specific retention. The most importantT dcontributions are the estimations of hydraulic conductivity and aquifer transmissivity. The hydrogeological parameters obtained fromΦ MRSparametrization are relatively well physically defined but insufficiently verified, where as the parameters obtained fromT dhave already largely been verified but they are based on an empirical relationship. All the hydrogeological parameters derived fromΦ MRSandT dand obtained from a 1D MRS experiment, are integrated over a large subsurface volume of up to 10 6 m 3 .