@article{fdi:010091219,
  title = {{I}nternal-tide vertical structure and steric sea surface height signature south of {N}ew {C}aledonia revealed by glider observations},
  author = {{B}endinger, {A}. and {C}ravatte, {S}ophie and {G}ourdeau, {L}ionel and {R}ainville, {L}. and {V}ic, {C}. and {S}{\'e}razin, {G}. and {D}urand, {F}abien and {M}arin, {F}r{\'e}d{\'e}ric and {F}uda, {J}. {L}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n this study, we exploit autonomous underwater glider data to infer internal-tide dynamics south of {N}ew {C}aledonia, an internal-tide-generation hot spot in the southwestern tropical {P}acific. {B}y fitting a sinusoidal function to vertical displacements at each depth using a least-squares method, we simultaneously estimate diurnal and semidiurnal tides. {O}ur analysis reveals regions of enhanced tidal activity, strongly dominated by the semidiurnal tide. {T}o validate our findings, we compare the glider observations to a regional numerical simulation that includes tidal forcing. {T}his comparison assesses the simulation's realism in representing tidal dynamics and evaluates the glider's ability to infer internal-tide signals and their signature in sea surface height ({SSH}). {T}he glider observations and a pseudo glider, simulated using hourly numerical model output with identical sampling, exhibit similar amplitude and phase characteristics along the glider track. {E}xisting discrepancies are in large part explained by tidal incoherence induced by eddy-internal-tide interactions. {W}e infer the semidiurnal internal-tide signature in steric {SSH} by the integration of vertical displacements. {W}ithin the upper 1000 m, the pseudo glider captures roughly 78 % of the steric {SSH} total variance explained by the full water column signal. {T}his value increases to over 90 % when projecting the pseudo glider's vertical displacements onto climatological baroclinic modes and extrapolating to full depth. {N}otably, the steric {SSH} from glider observations aligns closely with empirical estimates derived from satellite altimetry, highlighting the internal tide's predominant coherent nature during the glider's sampling.},
  keywords = {{NOUVELLE} {CALEDONIE} ; {PACIFIQUE} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{O}cean {S}cience},
  volume = {20},
  numero = {4},
  pages = {945--964},
  ISSN = {1812-0784},
  year = {2024},
  DOI = {10.5194/os-20-945-2024},
  URL = {https://www.documentation.ird.fr/hor/fdi:010091219},
}