@article{fdi:010060842,
  title = {{F}inescale vertical structure of the upwelling system off {S}outhern {P}eru as observed from glider data},
  author = {{P}ietri, {A}. and {T}estor, {P}. and {E}chevin, {V}incent and {C}haigneau, {A}lexis and {M}ortier, {L}. and {E}ldin, {G}{\'e}rard and {G}rados, {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he upwelling system off southern {P}eru has been observed using an autonomous underwater vehicle (a {S}locum glider) during {O}ctober-{N}ovember 2008. {N}ine cross-front sections have been carried out across an intense upwelling cell near 148 degrees {S}. {D}uring almost two months, profiles of temperature, salinity, and fluorescence were collected at less than 1-km resolution, between the surface and 200-m depth. {E}stimates of alongshore absolute geostrophic velocities were inferred from the density field and the glider drift between two surfacings. {I}n the frontal region, salinity and biogeochemical fields displayed cross-shore submesoscale filamentary structures throughout the mission. {T}hose features presented a width of 10-20 km, a vertical extent of; 150 m, and appeared to propagate toward the shore. {T}hey were steeper than isopycnals and kept an aspect ratio close to f/{N}, the inverse of the {P}randtl ratio. {T}hese filamentary structures may be interpreted mainly as a manifestation of submesoscale turbulence through stirring of the salinity gradients by the mesoscale eddy field. {H}owever, meandering of the front or cross-frontal wind-driven instabilities could also play a role in inducing vertical velocities.},
  keywords = {{PEROU}},
  booktitle = {},
  journal = {{J}ournal of {P}hysical {O}ceanography},
  volume = {43},
  numero = {3},
  pages = {631--646},
  ISSN = {0022-3670},
  year = {2013},
  DOI = {10.1175/jpo-d-12-035.1},
  URL = {https://www.documentation.ird.fr/hor/fdi:010060842},
}