@article{fdi:010076583,
  title = {{S}ea level at the coast from video-sensed waves : comparison to tidal gauges and satellite altimetry},
  author = {{O}ndoa, {G}. {A}. and {A}lmar, {R}afa{\¨e}l and {C}astelle, {B}. and {T}estut, {L}. and {L}eger, {F}. and {S}ohou, {Z}. and {B}onou, {F}. and {B}ergsma, {E}. {W}. {J}. and {M}eyssignac, {B}. and {L}arson, {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{N}earshore complex and energetic hydrodynamic conditions make observing evolving processes during extreme and short-term events difficult. {I}n particular, total sea levels at the coast are hard to measure with current techniques. {S}ea level is commonly measured with tidal gauges and spaceborne altimetry, which lack essential details of spatial and wave-related sea level variability along the coast. {H}ence, novel techniques, adapted to nearshore areas, are required. {T}his paper presents the first-time use of video cameras to derive the total sea level at the coast. {T}his novel approach consists of estimating time-varying total water levels by applying a celerity-based depth inversion method, which is conventionally used to estimate bathymetry from video. {T}he video-derived total sea levels are compared to sea levels derived from an in situ acoustic {D}oppler current profiler ({ADCP}), the nearest tide gauge, and altimetry. {A} tidal harmonic analysis is performed on the video-derived water levels, yielding an accurate determination of the dominant tidal harmonics. {H}owever, it remains difficult to separate bathymetric changes due to the waves on beaches when rapid morphological changes occur under energetic conditions. {N}onetheless, video-derived water-level anomalies are in good agreement with state-of-the-art altimetry products. {A}lthough there is still work to be done, the results show the potential to measure total sea level at the coast using video camera systems.},
  keywords = {{C}oastlines ; {C}ontinental shelf slope ; {A}tmosphere-ocean interaction ; {A}ltimetry ; {O}ceanic variability ; {BENIN} ; {ATLANTIQUE} {SUD} ; {GUINEE} {GOLFE} ; {GRAND} {POPO}},
  booktitle = {},
  journal = {{J}ournal of {A}tmospheric and {O}ceanic {T}echnology},
  volume = {36},
  numero = {8},
  pages = {1591--1603},
  ISSN = {0739-0572},
  year = {2019},
  DOI = {10.1175/jtech-d-18-0203.1},
  URL = {https://www.documentation.ird.fr/hor/fdi:010076583},
}