@article{fdi:010060765,
  title = {{I}nitiation and recession of the fluvial knickpoints of the {I}sland of {T}ahiti ({F}rench {P}olynesia)},
  author = {{Y}e, {F}. {Y}. and {B}arriot, {J}. {P}. and {C}arretier, {S}{\'e}bastien},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n this paper, we study the origin and evolution of the 42 knickpoints spanning the {I}sland of {T}ahiti, a large extinct shield volcano in the {S}outh {P}acific {O}cean ({F}rench {P}olynesia), by combining {DEM} analysis and numerical modeling. {T}hese knickpoints are located along rivers (107 in total) with a total length exceeding 6 km and with a total drainage of >3 km(2). {T}he knickpoint locations do not correspond to lithology, tributary confluence, or uplift. {W}e argue that these knickpoints have been initiated by a sudden sea level drop of 135 m 20 ky ago, and that the littoral cliffs circling two-thirds of {T}ahiti are the result of marine erosion that took place 7 ky ago from a stand level that was 5 m higher than now. {T}he head-to-toe height of the knickpoints increases with respect to the knickpoints' distance from the ocean. {T}he major process controlling the knickpoints is plunge-pool incision and the n = 2 stream-power model works well for modeling the profile form. {T}he mean retreat rate of the knickpoints corresponds very well with a drainage-area dependant model with velocities ranging from 0.17 to 1.2 m/y.},
  keywords = {{K}nickpoints ; {R}etreat rate ; {A}mphitheater-headed valleys ; {S}tream power law ; {T}ahiti ; {TAHITI}},
  booktitle = {},
  journal = {{G}eomorphology},
  volume = {186},
  numero = {},
  pages = {162--173},
  ISSN = {0169-555{X}},
  year = {2013},
  DOI = {10.1016/j.geomorph.2012.12.031},
  URL = {https://www.documentation.ird.fr/hor/fdi:010060765},
}