@article{fdi:010023734,
  title = {{T}racing the {N}orth {A}tlantic deep water through the {R}omanche and {C}hain fracture zones with chlorofluoromethanes},
  author = {{M}essias, {M}.{J}. and {A}ndri{\'e}, {C}hantal and {M}{\'e}mery, {L}. and {M}ercier, {H}},
  editor = {},
  language = {{ENG}},
  abstract = {{C}hlorofluoromethanes ({CFM}s) {F}-11 and {F}-12 were measured during {A}ugust 1991 and {N}ovember 1992 in the {R}omanche and {C}hain {F}racture {Z}ones in the equatorial {A}tlantic. {T}he {CFM} distributions showed the two familiar signatures of the more recently ventilated {N}orth {A}tlantic {D}eep {W}ater ({NADW}) seen in the {D}eep {W}estern {B}oundary {C}urrent ({DWBC}). {T}he upper maximum is centered around 1600 m at the level of the {U}pper {N}orth {A}tlantic {D}eep {W}ater ({UNADW}) and the deeper maximum around 3800 m at level of the {L}ower {N}orth {A}tlantic {D}eep {W}ater ({LNADW}). {T}hese observations suggest a bifurcation at the western boundary, some of the {NADW} spreading eastward with the {LNADW} entering the {R}omanche and the {C}hain {F}racture {Z}ones. {T}he upper core (sigma1.5 = 34.70 kg/m3) was observed eastward as far as 5°{W}. {T}he deep {CFM} maximum (sigma4 = 45.87 kg/m3), associated with an oxygen maximum, decreased dramatically at the sills of the {R}omanche {F}racture {Z}one : east of the sills, the shape of the {CFM} profiles reflects mixing and deepening of isopycnals. {M}ean apparent water "ages" computed from the {F}-11/{F}-12 ratio are estimated. {N}ear the bottom, no enrichment in {CFM}s is detected at the entrance of the fracture zones in the cold water mass originating from the {A}ntarctic {B}ottom {W}ater flow. ({R}{\'e}sum{\'e} d'auteur)},
  keywords = {{CIRCULATION} {PROFONDE} ; {COURANT} {MARIN} ; {COMPOSE} {ORGANOCHLORE} ; {GAZ} {DISSOUS} ; {DISTRIBUTION} {SPATIALE} ; {BASSIN} {OCEANIQUE} ; {DYNAMIQUE} {DE} {L}'{EAU} ; {MASSE} {D}'{EAU} ; {CHROMATOGRAPHIE} {EN} {PHASE} {GAZEUSE} ; {PROFIL} {VERTICAL} ; {CORRELATION} {NUMERIQUE} ; {TEMPERATURE} ; {SALINITE} ; {PROFONDEUR} ; {OXYGENE} {DISSOUS} ; {MESURE} ; {TRACEUR} {OCEANIQUE} ; {ATLANTIQUE} {EQUATORIAL} ; {ROMANCHE}},
  booktitle = {},
  journal = {{D}eep {S}ea {R}esearch : {P}art 1},
  volume = {46},
  numero = {},
  pages = {1247--1278},
  ISSN = {0967-0637},
  year = {1999},
  DOI = {10.1016/{S}0967-0637(99)00005-9},
  URL = {https://www.documentation.ird.fr/hor/fdi:010023734},
}