@article{fdi:010082555,
  title = {{A}ssessing the accuracy of combined {DEM}-based lineament mapping and the normalised {SL}-index as a tool for active fault mapping},
  author = {{V}iveen, {W}. and {B}aby, {P}atrice and {H}urtado-{E}nriquez, {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {{S}atellite image-based lineament mapping in combination with the normalised {S}tream {L}ength {G}radient {I}ndex ({SL}/{K}-index) is one of the most widely used methods to identify active faults in areas where other verification methods, such as faulted strata, geophysical subsurface data, or seismic activity in the upper crust, are unavailable, and to classify their degree of activity. {T}he accuracy of this approach, however, has not yet been assessed rigorously. {W}e assess its accuracy by comparing the results against 27 thrust fault segments that were identified from six seismic reflection profiles with a total length of 340 km. {O}ver 106,000 {SL}/{K} points were calculated from 815 river profiles on basis of the {SRTM} v.3.0 {DEM}. {S}tandard deviations ({SD}) of < -2{SD} (class 1) to > +2{SD} (class 5) were calculated from the lognormalised {SL}/{K} data and five {SL}/{K} classes were made and assigned to the nearby lineaments. {A} comparison with the fault segments from the seismic profiles showed a good coincidence between the presence of knickpoints, {SL}/{K} classes 4 and 5 and to a lesser extent class 3. {L}ineaments with {SL}/{K} classes 1 and 2 never corresponded to actual faults. {W}e identified seven master thrusts of which three are very active to highly active, likely older, structures with important amounts of accumulated slip. {T}he other thrusts are probably younger faults with relatively little accumulated slip, yet they are also active to highly active faults. {M}inor strike-slip faults were identified as very active to highly active structures. {P}ublished slip rates shows that at least some of the {SL}/{K} class 4 faults experience slip rates of similar to 1 to similar to 4 mm a(-1) and the {SL}/{K} class 5 strike-slip faults may experience slip rates as high as one metre over the course of several months. {M}ost active faults occur where the basal evaporite layer is abnormally thick.},
  keywords = {{A}mazon basin ; {A}ndes ; {SL}/{K}-index ; {S}eismic profiles ; {T}ectonogeomorphic indices ; {C}reeping faults ; {PEROU} ; {ANDES} ; {AMAZONE} {BASSIN} ; {HUALLAGA} {BASSIN}},
  booktitle = {},
  journal = {{T}ectonophysics},
  volume = {813},
  numero = {},
  pages = {228942 [21 ]},
  ISSN = {0040-1951},
  year = {2021},
  DOI = {10.1016/j.tecto.2021.228942},
  URL = {https://www.documentation.ird.fr/hor/fdi:010082555},
}