@article{fdi:010075532,
  title = {{S}torm event to seasonal evolution of nearshore bathymetry derived from shore-based video imagery},
  author = {{B}ergsma, {E}. {W}. {J}. and {C}onley, {D}. {C}. and {D}avidson, {M}. {A}. and {O}'{H}are, {T}. {J}. and {A}lmar, {R}afa{\¨e}l},
  editor = {},
  language = {{ENG}},
  abstract = {{C}oastal evolution occurs on a wide range of time-scales, from storms, seasonal and inter-annual time-scales to longer-term adaptation to changing environmental conditions. {M}easuring campaigns typically either measure morphological evolution on a short-time scale (days) with high frequency (hourly) or long-time scales (years) but intermittently (monthly). {T}his leaves an important observational gap that limits morphological variability assessments. {T}raditional echo sounding measurements on this long time-scale and high-frequency sampling require a significant financial injection. {S}hore-based video systems with high spatiotemporal resolution can bridge this gap. {F}or the first time, hourly {K}alman filtered video-derived bathymetries covering 1.5 years of morphological evolution with an hourly resolution obtained at {P}orhtowan, {UK} are presented. {H}ere, the long-term hourly dataset is used and aims to show its added value for, and provide an in-depth, morphological analyses with unprecedented temporal resolution. {T}he time-frame includes calm and extreme (storm) wave conditions in a macro-tidal environment. {T}he video-derived bathymetries allow hourly beach state classification while before this was not possible due to the dependence on foam patterns of wave breaking (e.g., saturation during storms). {T}he study period covers extreme storm erosion during the most energetic winter season in 60 years (2013-2014). {R}ecovery of the beach takes place on several time-scales: (1) an immediate initial recovery after the storm season (first 2 months), (2) limited recovery during low energetic summer conditions and (3) accelerated recovery as the wave conditions picked up in the subsequent fallunder wave conditions that are typically erosive. {T}he video-derived bathymetries are shown to be effective in determining bar-positions, outer-bar three-dimensionality and volume analyses with an unprecedented hourly temporal resolution.},
  keywords = {beach morphodynamics ; remote sensing ; bathymetry inversion ; multi-scale monitoring ; {ANGLETERRE}},
  booktitle = {},
  journal = {{R}emote {S}ensing},
  volume = {11},
  numero = {5},
  pages = {art. 519 [23 p.]},
  ISSN = {2072-4292},
  year = {2019},
  DOI = {10.3390/rs11050519},
  URL = {https://www.documentation.ird.fr/hor/fdi:010075532},
}