@article{fdi:010053725,
  title = {{N}ew perspectives on {N}atal {P}ulses from satellite observations},
  author = {{R}ouault, {M}.{J}. and {P}enven, {P}ierrick},
  editor = {},
  language = {{ENG}},
  abstract = {{M}ore than 6 years of high-frequency sea surface temperature ({SST}) imagery are used to follow perturbations at the inshore front of the {A}gulhas {C}urrent, between the northern {N}atal {B}ight and {P}ort {E}lizabeth. {S}elected case studies as well as a front detection algorithm applied to the {SST} data provide some new insights into the dynamics of {N}atal {P}ulses and the variability of the northern {A}gulhas {C}urrent. {O}ver the measurement period, the path of the {A}gulhas {C}urrent's inshore front does not exhibit any seasonality. {I}nstead, large excursions in the {A}gulhas {C}urrent's inshore front are dominated by the intermittent passage of offshore cyclonic meanders from the {N}atal {B}ight and {P}ort {E}dward regions to {P}ort {E}lizabeth. {SST} imagery reveals that as they progress downstream, {N}atal {P}ulses interact with the topography to form secondary offshore meanders which propagate in the lee of the original perturbation. {O}ver time, these secondary meanders dissipate, remerge with the original {N}atal {P}ulse, or detach from the {A}gulhas {C}urrent. {F}luctuations in the {A}gulhas {C}urrent inshore path do not display the same frequency characteristics at all transects. {F}rom the northern {N}atal {B}ight to {P}ort {E}dward both the size and frequency of {N}atal {P}ulses increases, while south of {P}ort {E}dward the number of {N}atal {P}ulses decreases. {A}t {P}ort {E}lizabeth, the number of {N}atal {P}ulses observed is lower in comparison to previous estimates, with an average of 1.6 {N}atal {P}ulses per year.},
  keywords = {},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch. {O}ceans},
  volume = {116},
  numero = {},
  pages = {{C}07013},
  ISSN = {0148-0227},
  year = {2011},
  DOI = {10.1029/2010jc006866},
  URL = {https://www.documentation.ird.fr/hor/fdi:010053725},
}