@article{fdi:010068262,
  title = {{M}orphology and distribution of dolines on ultramafic rocks from airborne {L}i{DAR} data : the case of southern {G}rande {T}erre in {N}ew {C}aledonia ({SW} {P}acific)},
  author = {{J}eanpert, {J}. and {G}enthon, {P}ierre and {M}aurizot, {P}. and {F}olio, {J}. {L}. and {V}ende-{L}eclerc, {M}. and {S}erino, {J}. and {J}oin, {J}. {L}. and {I}seppi, {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{D}olines are closed geomorphological depressions which are surface manifestations of karstic systems. {U}sually developed on limestones, they also typify the morphology of the {N}ew {C}aledonian landscape, particularly on the southern massif of the main island (known as {M}assif du {S}ud). {T}he specificity of dolines here lies in their development on ultramafic rocks. {T}hey are evidences of subsidence, suffosion and collapse phenomena resulting from dissolution weathering of peridotites. {H}owever, extensive underground drainage systems are still not yet recognized. {S}emi-automatic mapping of dolines is carried out on a 148 km(2) area of the {M}assif du {S}ud from a high accuracy {L}i{DAR} digital elevation model. {I}n this area 8601 dolines ranging from 1 m(2) to 2 km(2) are identified and morphologically characterized with precision. {M}ost are small, shallow and round-shaped, yet more complex shapes are locally observed. {S}ize distribution analysis allows the setting of a threshold of 20 000 m(2) above which surface processes rather than chemical weathering control doline evolution. {D}oline density analysis reveals high concentrations on flat areas where ferricrete overlies the complete weathering profile, especially in the case of elevated rainy watersheds. {D}olines are aligned and elongated along a north 135 degrees 5 degrees major fracture direction, which is inherited from the obduction of the {P}acific {P}late upper mantle in the {L}ate {E}ocene. {F}inally, we propose a pioneering morphometric typology of dolines that provides important clues as to pseudokarstic activity. {W}e define collapse, bowl-shaped and flat bottom dolines. {C}ollapse and bowl-shaped dolines are assumed to denote active pseudokarst. {T}hey may widen and deepen, or eventually be filled by sediments. {T}hey are distinguished from flat bottom dolines that are partially to completely filled, which suggests that they are associated with paleo-pseudokarsts. {H}owever the groundwater flow paths associated with the genesis and evolution of dolines must be clarified, thus collapse and bowl-shaped dolines should be hydrologically monitored.},
  keywords = {dolines ; peridotites ; {L}i{DAR} ; {N}ew {C}aledonia ; fracture control ; {NOUVELLE} {CALEDONIE}},
  booktitle = {},
  journal = {{E}arth {S}urface {P}rocesses and {L}andforms},
  volume = {41},
  numero = {13},
  pages = {1854--1868},
  ISSN = {0197-9337},
  year = {2016},
  DOI = {10.1002/esp.3952},
  URL = {https://www.documentation.ird.fr/hor/fdi:010068262},
}