@article{fdi:010061309,
  title = {{I}nfragravity waves in the deep ocean : an upward revision},
  author = {{A}ucan, {J}er{\^o}me and {A}rdhuin, {F}.},
  editor = {},
  language = {{ENG}},
  abstract = {{O}cean infragravity waves are surface gravity waves with periods of several minutes and corresponding wavelengths of up to tens of kilometers. {W}hen propagating freely in the deep ocean, these waves are typically small, several centimeters at most, so they have been seldom studied. {I}n the context of future wide-swath altimetry missions, these waves need to be better quantified as they have wavelengths that will be resolved by such instruments. {H}ere, we analyze the global climatology and variability of infragravity waves in the deep ocean using data from over 40 open ocean locations, with depths larger than 2000 m. {W}e show that typical infragravity wave heights are higher than previously estimated, with winter-averaged values up to 11 mm off the {U}. {S}. {W}est {C}oast, and typically less than 6 mm in the tropics. {T}he mid to high latitudes exhibit a strong seasonal cycle consistent with the local variability of the wind-waves, while the tropical {P}acific has a higher energy level during the {A}ustral winter that does not correlate well with the local wind-waves, suggesting a remote source for the recorded infragravity waves. {T}hese infragravity wave energies are expected to be a significant contribution to the error budget for possible measurements of sea level associated to sub-mesoscale currents at horizontal scales around 10 km. {H}ence, a global numerical model of infragravity waves will likely be necessary for the analysis of the planned {S}urface {W}ater {O}cean {T}opography mission.},
  keywords = {{I}nfragravity ; {SWO}},
  booktitle = {},
  journal = {{G}eophysical {R}esearch {L}etters},
  volume = {40},
  numero = {13},
  pages = {3435--3439},
  ISSN = {0094-8276},
  year = {2013},
  DOI = {10.1002/grl.50321},
  URL = {https://www.documentation.ird.fr/hor/fdi:010061309},
}