@article{fdi:010086483,
  title = {{F}lash floods triggered by the 15-17th {M}arch 2022 rainstorm event in the {A}tacama {D}esert mapped from {I}n{SAR} coherence time series},
  author = {{C}abre, {A}. and {R}{\'e}my, {D}ominique and {M}arc, {O}. and {B}urrows, {K}. and {C}arretier, {S}{\'e}bastien},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his research provides examples of the impacts of flash floods of {M}arch 2022 rainstorm event on the {A}tacama {D}esert infrastructures investigated by means of {I}n{SAR} coherence and in situ observations. {T}he erosional processes associated with flash floods and the downstream distance they can travel are poorly known, preventing any mitigation strategy. {T}hus, a better understanding of sediment mobilization during high-intensity rainstorm events in the {A}tacama {D}esert is therefore essential to assess the impact of hydrogeomorphic hazards on critical infrastructures and ecosystems. {T}he main findings are (i) the devastating role of small-scale (< 5 km radius) rainfall cells and their large impact on transport network infrastructures and (ii) the impact on infrastructure depended mainly on the transport capacity of the flows, which is in turn determined by the drained area upstream of the considered channel, and the rainfall intensity on these upstream areas. {F}or example, water flows with high discharge could remove larger volumes of sediments, undermining and cutting roads. {S}uch flows were frequent at similar to 26 degrees {S}, while at similar to 22 degrees {S}, they were limited to a few channels with large contributing areas. {T}his resulted in extensive damage and required considerable time and money to recondition the road. {I}n contrast, thinner mudflows with limited transport capacity tend to follow the roads and leave a thin deposit of mud that can be cleaned in a few days. {T}he fact that roads transported mudflows over large distances and that mining infrastructure deflects natural drainages has been observed as a potential hazard to downstream infrastructures or inhabited areas.},
  keywords = {{F}lash floods ; {A}tacama {D}esert ; {R}ainfall ; {I}n{SAR} ; {C}oherence ; {T}ransport networks ; {CHILI} ; {ATACAMA}},
  booktitle = {},
  journal = {{N}atural {H}azards},
  volume = {[{E}arly access]},
  numero = {},
  pages = {[9 ]},
  ISSN = {0921-030{X}},
  year = {2022},
  DOI = {10.1007/s11069-022-05707-y},
  URL = {https://www.documentation.ird.fr/hor/fdi:010086483},
}