@article{fdi:010019666,
  title = {{O}n the crossing of the equator by intermediate water masses in the {W}estern {A}tlantic {O}cean : identification and pathways of {A}ntartic intermediate water and upper circumpolar water},
  author = {{O}udot, {C}laude and {T}ernon, {J}ean-{F}ran{\c{c}}ois and {A}ndri{\'e}, {C}hantal and {B}raga, {E}.{S}. and {M}orin, {P}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he flow of intermediate water masses across the equator in the {A}tlantic {O}cean is of fundamental interest in the context of the global meridional circulation cell associated with the formation of the {N}orth {A}tlantic {D}eep {W}ater. {T}his paper describes the flow and pathways of the {A}ntarctic {I}ntermediate {W}ater ({AAIW}) and the {U}pper {C}ircumpolar {W}ater ({UCPW}) at between 500- and 1200-m depths in the {W}estern equatorial {A}tlantic (5°{S}-7°30 {N}). {T}hese have been deduced from hydrological and geochemical tracer (nutrients and chlorofluocarbons) data sets from {CITHER} 1 ({R}/{V} {L}'{A}talante, {J}anuary-{M}arch 1993), {ETAMBOT} 1 ({R}/{V} {L}e {N}oroit, {S}eptember-{O}ctober 1995), and {ETAMBOT} 2 ({R}/{V} {E}dwin {LI}nk, {A}pril-{M}ay 1996) cruises. {B}oth the {AAIW} and {UCPW} enter, on the isopycnals sigma(theta) = 27.25 (676 + or - 36 dbar) and sigma(theta) = 27.40 (919 plus or - 35 dbar), respectively, the equatorial belt as narrow, northwestward flows around the northeast tip of {B}razil near 5°{S}. {D}uring transit within this zone the core properties of the {UCPW} erode more than those of {AAIW}. {F}low patterns of both the water masses show westward spreading and eastward recirculations on either side of the equator. {T}emporal variations in spreading and recirculation occur at both levels, but they are more pronounced at the {AAIW} level, in agreement with earlier observations in the upper layers. {A}t the northern boundary of the equatorial belt (7°30' {N}) the {AAIW} flows along the western boundary while the {UCPW}, instead, recirculates into the interior of the ocean. ({R}{\'e}sum{\'e} d'auteur)},
  keywords = {{CIRCULATION} {OCEANIQUE} ; {MASSE} {D}'{EAU} ; {CIRCULATION} {THERMOHALINE} ; {CIRCULATION} {PROFONDE} ; {COURANT} {PROFOND} ; {VITESSE} ; {MESURE} ; {VARIATION} {TEMPORELLE} ; {ATLANTIQUE} {EQUATORIAL}},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch},
  volume = {104},
  numero = {{C}9},
  pages = {20,911--20,926},
  ISSN = {0148-0227},
  year = {1999},
  DOI = {10.1029/1999{JC}900123},
  URL = {https://www.documentation.ird.fr/hor/fdi:010019666},
}