@article{fdi:010069421,
  title = {{F}ocusing of internal tides by near-inertial waves},
  author = {{C}uypers, {Y}. and {B}ouruet-{A}ubertot, {P}. and {V}ialard, {J}{\'e}r{\^o}me and {M}c{P}haden, {M}. {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he refraction of internal waves by lower-frequency near-inertial waves has been predicted theoretically, but never observed before. {H}ere, we report observations of semi-diurnal internal tides generated by the rough topography of the {C}entral {I}ndian {R}idge, in the presence of a strong, lower-frequency near-inertial wave field generated by a tropical storm. {T}he semi-diurnal internal tide energy is trapped within upward propagating bands with a periodicity close to the inertial period. {A} ray-tracing model suggests that this trapping results from the internal tide refraction by the shear associated with near-inertial waves. {T}his yields a strong increase of the internal tide energy and shear in space-time regions where the background flow focuses the rays, leading to the formation of caustics. {T}his mechanism may increase vertical mixing generated by baroclinic tides in the vicinity of mid-ocean ridges in tropical regions.},
  keywords = {{OCEAN} {INDIEN} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{G}eophysical {R}esearch {L}etters},
  volume = {44},
  numero = {5},
  pages = {2398--2406},
  ISSN = {0094-8276},
  year = {2017},
  DOI = {10.1002/2017gl072625},
  URL = {https://www.documentation.ird.fr/hor/fdi:010069421},
}