@article{fdi:34270, title = {{E}quatorial {K}elvin and {R}ossby waves evinced in the {P}acific ocean through {GEOSAT} sea level and surface current anomalies}, author = {{D}elcroix, {T}hierry and {P}icaut, {J}o{\¨e}l and {E}ldin, {G}{\'e}rard}, editor = {}, language = {{ENG}}, abstract = {{E}quatorial {K}elvin and {R}ossby waves are comprehensively demonstrated over most of the equatorial {P}acific basin, through their signatures in sea level and zonal surface geostrophic current anomalies. {T}his was made possible with altimeter data pertaining to the first year of the {G}eosat ({G}eodetic {S}atellite) 17-day exact repeat orbit ({N}ovember 8, 1986, to {N}ovember 8, 1987). {T}o this end, along-track corrected {G}eosat sea level anomalies ({SLA}s), relative to the time period of interest, were first smoothed using nonlinear and linear filters. {T}he original 17-day time step was then reduced by combining all ascending and descending tracks within 10° longitudinal bands. {F}inally, {SLA}s were gridded onto a regular grid, and low-pass filters were applied in latitude and time in order to smooth out remaining high-frequency noise. {A}nomalies of zonal surface geostrophic current were calculated using the first and second derivatives of the {SLA} meridional gradient, off and on the equator respectively}, keywords = {{ONDE} {ROSSBY} ; {DONNEES} {SATELLITE} ; {NIVEAU} {MARIN} ; {ANOMALIE} ; {COURANT} {SUPERFICIEL} ; {ONDE} {KELVIN} ; {SATELLITE} {GEOSAT} ; {PACIFIQUE} {TROPICAL}}, booktitle = {}, journal = {{J}ournal of {G}eophysical {R}esearch}, volume = {96 suppl.}, numero = {}, pages = {3249--3262}, ISSN = {0148-0227}, year = {1991}, URL = {https://www.documentation.ird.fr/hor/fdi:34270}, }