@article{fdi:010053353,
  title = {{E}stimating aquifer thickness using multiple pumping tests},
  author = {{M}ar{\'e}chal, {J}ean-{C}hristophe and {V}ouillamoz, {J}ean-{M}ichel and {K}umar, {M}.{S}.{M}. and {D}ewandel, {B}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A} method to estimate aquifer thickness and hydraulic conductivity has been developed, consisting of multiple pumping tests. {T}he method requires short-duration pumping cycles on an unconfined aquifer with significant seasonal water-table fluctuations. {T}he interpretation of several pumping tests at a site in {I}ndia under various initial conditions provides information on the change in hydrodynamic parameters in relation to the initial water-table level. {T}he transmissivity linearly decreases compared with the initial water level, suggesting a homogeneous distribution of hydraulic conductivity with depth. {T}he hydraulic conductivity is estimated from the slope of this linear relationship. {T}he extrapolation of the relationship between transmissivity and water level provides an estimate of the aquifer thickness that is in good agreement with geophysical investigations. {T}he hydraulically active part of the aquifer is located in both the shallow weathered and the underlying densely fractured zones of the crystalline basement. {H}owever, no significant relationship is found between the aquifer storage coefficient and initial water level. {T}his new method contributes to filling the methodological gap between single pumping tests and hydraulic tomography, in providing information on the variation of the global transmissivity according to depth. {I}t can be applied to any unconfined aquifer experiencing large seasonal water-table fluctuations and short pumping cycles.},
  keywords = {{G}roundwater hydraulics ; {I}ndia ; {C}rystalline rocks ; {F}ractured rocks ; {H}ydraulic testing},
  booktitle = {},
  journal = {{H}ydrogeology {J}ournal},
  volume = {18},
  numero = {8},
  pages = {1787--1796},
  ISSN = {1431-2174},
  year = {2010},
  DOI = {10.1007/s10040-010-0664-3},
  URL = {https://www.documentation.ird.fr/hor/fdi:010053353},
}