@article{fdi:010077024,
  title = {{A}n attempt to link suspended load hysteresis patterns and sediment sources configuration in alpine catchments},
  author = {{M}isset, {C}. and {R}ecking, {A}. and {L}egout, {C}. and {P}oirel, {A}. and {C}azilhac, {M}. and {E}steves, {M}ichel and {B}ertrand, {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A} large part of total solid flux is transported as suspension in mountainous rivers. {I}t is crucial for water resource management and for environmental issues to be able to model and to understand these fluxes. {H}owever, suspended load is known to be highly variable in time and space, as fine sediments can originate from various erosion processes and from various sources. {A}mong the different methodologies available for analyzing the suspended sediment flux dynamics, hysteretic loops in discharge and suspended load signals are commonly used to assess sediment sources and production processes. {H}owever, the shape of these loops is often analyzed qualitatively for a single or a small number of catchments. {H}ence it is still unclear how the geomorphological catchment properties influence the variability of the flow rate - suspended sediment concentration relationship through the hysteresis effects. {T}his is particularly true in mountainous catchments where important sources of fine sediments may originate from the river bed in addition to hillslopes. {I}n this study we analyzed quantitatively ten long-term series of high-frequency observations of suspended sediment load measured in contrasted alpine catchments. {H}ysteresis effects were analyzed in a high number of automated sampled events and the dominant response for each catchment was sought. {T}his was done by using a normalized hysteresis index developed by {L}loyd et al. (2016), which we weighted by the mass transported during each event. {T}he various catchments were characterized with a normalized geomorphological index expressing the relative importance of sediment sources originating from the river bed or from eroded areas as a function of the distance to the outlet of the catchment. {T}he dominant hysteresis response of the ten alpine catchments studied was found to be greatly linked to their geomorphological index. {T}hese results suggest that the sediment source configuration upstream of a measuring station drives hysteresis effects and thus the variability of the flow rate-suspended sediment concentration relationship.},
  keywords = {{S}uspended load ; {H}ysteresis ; {S}ediment sources ; {A}lpine catchments ; {FRANCE} ; {ALPES}},
  booktitle = {},
  journal = {{J}ournal of {H}ydrology},
  volume = {576},
  numero = {},
  pages = {72--84},
  ISSN = {0022-1694},
  year = {2019},
  DOI = {10.1016/j.jhydrol.2019.06.039},
  URL = {https://www.documentation.ird.fr/hor/fdi:010077024},
}