@article{fdi:010084727,
  title = {{E}stimating hydraulic properties of the shallow subsurface using the groundwater response to earth and atmospheric tides : a comparison with pumping tests},
  author = {{V}alois, {R}. and {R}au, {G}. {C}. and {V}ouillamoz, {J}ean-{M}ichel and {D}erode, {B}.},
  editor = {},
  language = {{ENG}},
  abstract = {{E}stimating subsurface hydraulic properties using the groundwater ({GW}) response to {E}arth tides ({ET}) and atmospheric pressure is an alternative approach to pumping or slug tests (passive vs. active methods). {Y}et testing the applicability of models under different subsurface conditions and comparing results with traditional hydraulic methods are lacking. {W}e first review the assumptions of analytical models used to evaluate the {GW} response to {ET} and their applicability in unconfined to confined conditions. {S}econd, we develop a robust approach to select the right model based on amplitude and phase pattern of the diurnal and semi-diurnal tides. {T}hird, based on earlier works we develop an approach to derive the hydraulic conductivity of the screened interval using the {GW} response to atmospheric tides, here named "atmospheric slug test" ({AST}). {W}e estimate transmissivity and storativity at three shallow aquifers in {C}ambodia and compare the results with subsurface properties derived from pumping tests ({PT}). {T}ransmissivity values from {AST} and {PT} are in good agreement. {H}owever, we show that storativity values derived from {ET} show large discrepancies if borehole skin effects are ignored. {F}urther, the {GW} response to {ET} exhibits a strong decay in amplitude with frequency while maintaining close to zero and positive phase shifts. {W}hen supplemented with the calculated transmissivity values, none of the analytical models was able to reproduce this frequency dependent behavior. {O}ur work emphasizes the need for evaluating passive methods robustness under different subsurface conditions. {F}urther work is required to understand the frequency dependent {GW} response to natural or artificial forces.},
  keywords = {{E}arth tides ; atmospheric tides ; {B}arometric {R}esponse {F}unction ; tide ; frequency ; hydrogeology ; {CAMBODGE}},
  booktitle = {},
  journal = {{W}ater {R}esources {R}esearch},
  volume = {58},
  numero = {5},
  pages = {e2021{WR}031666 [21 p.]},
  ISSN = {0043-1397},
  year = {2022},
  DOI = {10.1029/2021wr031666},
  URL = {https://www.documentation.ird.fr/hor/fdi:010084727},
}