@article{PAR00008550,
  title = {{C}omparison of transmissivities from {MRS} and pumping tests in {D}enmark},
  author = {{N}ielsen, {M}. {R}. and {H}agensen, {T}. {F}. and {C}halikakis, {K}. and {L}egchenko, {A}natoli},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n {D}enmark, hydrogeophysical mapping is performed intensively in accordance with the {D}anish {G}overnment's environmental plans of ensuring a high quality drinking water supply. {P}reviously the magnetic resonance sounding ({MRS}) method has been proven to improve the hydrogeological characterization from geophysical surface measurements in {D}enmark. {I}n order to implement hydraulic parameters estimated from {MRS} together with hydraulic parameters obtained from pumping tests, it is necessary to analyse and compare the hydraulic parameters from the two data sources. {T}hese parameters are determined very differently with uncertainties arising from very different sources and the comparison requires an analysis in each specific case with attention on the investigated volumes. {S}everal comparisons of transmissivities from {MRS} and pumping tests in {D}enmark show that the pumping test transmissivity value corresponds to the {MRS} transmissivity accumulated over depth intervals determined by the screen position depth interval in the borehole. {W}hen specific determinations of these depth intervals are performed, very good correlation is obtained between transmissivities from {MRS} and pumping tests. {C}omparisons of transmissivities from {MRS} and pumping tests will also lead to the determination of {MRS} calibration coefficients. {MRS} calibration is essential for quantitative use of {MRS} transmissivities. {S}ixteen calibration coefficients in different survey areas have been calculated. {I}f these calibration coefficients can be categorized according to the different {D}anish survey locations and hydrogeological conditions in which they are obtained, these categorized calibration coefficients could be used in future {MRS} surveys without the need of calibrating with pumping tests in each survey. {H}owever, only a slight tendency of increasing calibration coefficient with increasing transmissivity and increasing grain size is observed. {T}he present study shows that in general only little dispersion is observed around an average calibration coefficient for the different {D}anish survey locations and hydrogeological conditions.},
  keywords = {},
  booktitle = {},
  journal = {{N}ear {S}urface {G}eophysics},
  volume = {9},
  numero = {2},
  pages = {211--223},
  ISSN = {1569-4445},
  year = {2011},
  DOI = {10.3997/1873-0604.2010071},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00008550},
}