@article{fdi:010061778,
  title = {{I}mpacts of human activities on recharge in a multilayered semiarid aquifer ({C}ampo de {C}artagena, {SE} {S}pain)},
  author = {{B}audron, {P}. and {B}arbecot, {F}. and {A}rostegui, {J}. {L}. {G}. and {L}educ, {C}hristian and {T}ravi, {Y}. and {M}artinez-{V}icente, {D}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he development of intense agriculture in semiarid areas modifies intensity and spatial distribution of groundwater recharge by summing irrigation return flow to limited rainfall infiltration. {E}nvironmental tracers provide key information, but their interpretation is complicated by more complex groundwater flow patterns. {I}n multilayered aquifers, the real origin of the groundwater samples is hard to assess because of local mixing processes occurring inside long-screened boreholes. {W}e use environmental tracers ({C}-14, {C}-13, {H}-2, {O}-18, {H}-3) to investigate the long-term evolution of recharge in the five-layer {C}ampo de {C}artagena aquifer in {S}outh-{E}astern {S}pain, in addition to high-resolution temperature loggings to identify the depth of origin of groundwater. {D}espite the complex background, this methodology allowed a reliable interpretation of the geochemistry and provided a better understanding of the groundwater flow patterns. {T}he tritium method did not give good quantitative results because of the high variability of the recharge signal but remained an excellent indicator of recent recharge. {N}onetheless, both pre-anthropization and post-anthropization recharge regime could be identified and quantified by radiocarbon. {B}efore the development of agriculture, recharge varied from 17mm.year(-1) at the mountain ranges to 6mm.year(-1) in the plain, whereas the mean annual rainfall is about 300mm. {I}n response to the increase of agricultural activity, recharge fluxes to the plain were amplified and nowadays reach up to 210mm.year(-1) in irrigated areas. {T}hese values are strengthened by global water budget and local unsaturated zone studies.},
  keywords = {recharge ; irrigation ; intensive aquifer development semiarid ; isotopes ; groundwater ; temperature ; {ESPAGNE}},
  booktitle = {},
  journal = {{H}ydrological {P}rocesses},
  volume = {28},
  numero = {4},
  pages = {2223--2236},
  ISSN = {0885-6087},
  year = {2014},
  DOI = {10.1002/hyp.9771},
  URL = {https://www.documentation.ird.fr/hor/fdi:010061778},
}