@article{fdi:010064157,
  title = {{G}eometry of two glacial valleys in the northern {P}yrenees estimated using gravity data},
  author = {{P}errouty, {S}. and {M}oussirou, {B}. and {M}artinod, {J}. and {B}onvalot, {S}ylvain and {C}arretier, {S}{\'e}bastien and {G}abalda, {G}erminal and {M}onod, {B}. and {H}{\'e}rail, {G}{\'e}rard and {R}egard, {V}. and {R}{\'e}my, {D}ominique},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e estimate using gravity data the thickness of post-glacial unconsolidated sediment filling two major glacial valleys in northern {P}yrenees: the {G}ave de {P}au valley between {P}ierrefitte-{N}estalas and {L}ourdes, and the {G}aronne valley between {S}aint-{B}eat and {B}arbazan. {O}ne hundred and eighty-four new gravity data complete 74 measurements obtained from the {I}nternational {G}ravimetric {B}ureau database. {N}egative residual anomalies resulting from the presence of small-density unconsolidated sediment approach 4 mgal in both the {G}ave de {P}au and the {G}aronne valleys. {E}stimating the sediment thickness requires knowing the density contrast between {Q}uaternary sediments and the underlying bedrock. {S}upposing this density contrast is 600 kg/m(3), the maximum estimated thickness of post-glacial sediment is similar to 230 and 300 meters, and the volume of sediment is 2.1 and 3.2 km(3) in the {G}ave de {P}au and {G}aronne valleys, respectively. {I}n both valleys, the depth of {Q}uaternary sediment suddenly increases at the confluence between two major glacial valleys ({G}ave de {P}au - {G}ave de {C}auterets, and {G}aronne - {P}ique confluences). {O}verdeepened basins are less deep downstream when approaching terminal moraines ({L}ourdes and {B}arbazan area), illustrating that the efficiency of glacial erosion depends on the ice flux flowing through valleys.},
  keywords = {{G}ravity ; {G}eomorphology ; {M}odeling ; {G}lacial valley ; {P}yrenees ; {FRANCE} ; {PYRENEES}},
  booktitle = {},
  journal = {{C}omptes {R}endus {G}eoscience},
  volume = {347},
  numero = {1},
  pages = {13--23},
  ISSN = {1631-0713},
  year = {2015},
  DOI = {10.1016/j.crte.2015.01.002},
  URL = {https://www.documentation.ird.fr/hor/fdi:010064157},
}