@article{fdi:010061317,
  title = {{N}ear-coastal circulation in the {N}orthern {H}umboldt {C}urrent {S}ystem from shipboard {ADCP} data},
  author = {{C}haigneau, {A}lexis and {D}ominguez, {N}. and {E}ldin, {G}{\'e}rard and {V}asquez, {L}. and {F}lores, {R}. and {G}rados, {C}. and {E}chevin, {V}incent},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he near-coastal circulation of the {N}orthern {H}umboldt {C}urrent {S}ystem is described analyzing approximate to 8700 velocity profiles acquired by a shipboard acoustic {D}oppler current profiler ({SADCP}) during 21 surveys realized between 2008 and 2012 along the {P}eruvian coast. {T}his data set permits observation of (i) part of the {P}eru {C}oastal {C}urrent and the {P}eru {O}ceanic {C}urrent that flow equatorward in near-surface layers close to the coast and farther than approximate to 150 km from the coast, respectively; (ii) the {P}eru-{C}hile {U}ndercurrent ({PCUC}) flowing poleward in subsurface layers along the outer continental shelf and inner slope; (iii) the near-surfacing {E}quatorial {U}ndercurrent renamed as {E}cuador-{P}eru {C}oastal {C}urrent that feeds the {PCUC}; and (iv) a deep equatorward current, referred to as the {C}hile-{P}eru {D}eep {C}oastal {C}urrent, flowing below the {PCUC}. {A} focus in the {PCUC} core layer shows that this current exhibits typical velocities of 5-10 cm s(-1). {T}he {PCUC} deepens with an increasing thickness poleward, consistent with the alongshore conservation of potential vorticity. {T}he {PCUC} mass transport increases from approximate to 1.8 {S}v at 5 degrees {S} to a maximum value of approximate to 5.2 {S}v at 15 degrees {S}, partly explained by the {S}verdrup balance. {T}he {PCUC} experiences relatively weak seasonal variability and the confluence of eddy-like structures and coastal currents strongly complicates the circulation. {T}he {PCUC} intensity is also affected by the southward propagation of coastally trapped waves, as revealed by a strong {PCUC} intensification in {M}arch 2010 coincident with the passage of a downwelling coastal wave associated with a weak {E}l {N}ino event.},
  keywords = {{NHCS} circulation ; {ADCP} data ; {P}eru-{C}hile {U}ndercurrent ; mean structure ; alongshore variability ; seasonal and interannual variability ; {PEROU} ; {CHILI} ; {OCEAN} {PACIFIQUE}},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch. {O}ceans},
  volume = {118},
  numero = {10},
  pages = {5251--5266},
  ISSN = {2169-9275},
  year = {2013},
  DOI = {10.1002/jgrc.20328},
  URL = {https://www.documentation.ird.fr/hor/fdi:010061317},
}