@article{fdi:010053732,
  title = {{B}aseflow control on sediment flux connectivity : insights from a nested catchment study in {C}entral {M}exico},
  author = {{D}uvert, {C}. and {G}ratiot, {N}icolas and {A}nguiano-{V}alencia, {R}. and {N}emery, {J}. and {M}endoza, {M}.{E}. and {C}arlon-{A}llende, {T}. and {P}rat, {C}hristian and {E}steves, {M}ichel},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n order to assess the extent of sediment connectivity between uplands and lowlands and to quantify the processes of in-channel deposition and remobilization, measurements of suspended sediment fluxes were conducted in a nested rural catchment of the {M}exican {V}olcanic {B}elt. {D}ata were collected over one year at three upland sites (3 to 12 km(2)) and two downstream stations (390-630 km(2)). {O}ur results show that a structural discontinuity in the catchment (i.e. abrupt slope decrease at the junction between piedmonts and the alluvial plain from 2 to 10% to <0.1%) could be compensated by functional continuity during floods. {D}irect conveyance of fine sediment to the outlet occurred when a high stream transport capacity was reached. {E}rosion of the streambed was observed on various occasions and accounted for up to 50% of the flux leaving the catchment during one event. {C}onversely, temporary in-channel storage was apparent on other occasions, amounting to up to 52% of the flux recorded upstream during one storm. {T}hese two distinct behaviours were approximately equally distributed along the rainy season and strongly driven by the extent of coupling between surface and subsurface water. {T}his work indeed highlights the role of baseflow spatial variations in determining the extent of lowland sediment conveyance. {R}iverbed erosional processes occurred when large differences in pre-event baseflow values (i.e. at least a twofold longitudinal increase) were observed between the 5-km distant lowland stations. {O}ur findings outline the importance of systematically taking into consideration the baseflow parameter in research focusing on fine sediment transport across scales.},
  keywords = {{D}eposition ; {E}rosion ; {L}ongitudinal decoupling ; {M}esoscale catchment ; {S}uspended sediment yield ; {T}ropical rain regime},
  booktitle = {},
  journal = {{C}atena},
  volume = {87},
  numero = {1},
  pages = {129--140},
  ISSN = {0341-8162},
  year = {2011},
  DOI = {10.1016/j.catena.2011.05.021},
  URL = {https://www.documentation.ird.fr/hor/fdi:010053732},
}