Journal cover Journal topic
Ocean Science An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 2.864 IF 2.864
  • IF 5-year value: 3.337 IF 5-year
    3.337
  • CiteScore value: 4.5 CiteScore
    4.5
  • SNIP value: 1.259 SNIP 1.259
  • IPP value: 3.07 IPP 3.07
  • SJR value: 1.326 SJR 1.326
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 52 Scimago H
    index 52
  • h5-index value: 30 h5-index 30
Preprints
https://doi.org/10.5194/os-2017-34
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/os-2017-34
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

  30 May 2017

30 May 2017

Review status
This preprint has been withdrawn by the authors.

Relative dispersion in the South Western Mediterranean as derived from satellite-tracked surface drifting buoys

Maher Bouzaiene1, Milena Menna2, Pierre-Marie Poulain2, and Dalila Elhmaidi1 Maher Bouzaiene et al.
  • 1Université de Tunis El Manar, Unité de recherche: Rayonnement thermique, Faculté des Sciences de Tunis, Tunisie
  • 2National Institute of Oceanography and Experimental Geophysics, Sgonico (Ts), Italy

Abstract. Relative dispersion (D2) in the South Western Mediterranean is analyzed using surface drifter pairs deployed during the period from 1986 to 2016. The results show the existence of four well-known regimes. The first regime, characterized by an exponential increment of the relative dispersion (Lundgren or exponential regime), corresponds to the chaotic advection at small scales and small separation distances, lasts for a few days. In the second regime, extending from 1.5 to roughly 7 days, for scales between 25 and 57 km and 1–3 km of initial distance, D2 increases as time cubed (Richardson regime). The third regime occurs for initial distances of 5–10 km and times of 1.5–13 days; D2 increases quadratically with time (Ballistic regime). The forth regime corresponds to time scales larger than 34 days for initial distances of 1–3 km and to 23 days for 35–40 km with a linear increase in time of D2 (Rayleigh or diffusive regime). The relative diffusivity and characteristic dispersion time exhibit three different phases based on the initial pair separations and corresponding with Lundgren, Richardson and Rayleigh regimes, respectively. In the first phase (enstrophy cascade range) the diffusivity is ~ D2 for distances smaller than 15 km and initial separation distances between 5 km and 10 km, and also for distances smaller than 40 km for initial separation distances between 35 km and 40 km; characteristic dispersion time is constant. In the second phase (inverse energy cascade), the diffusivity and characteristic dispersion time increase with growing distances following the 4/3 and 2/3 power laws, respectively, for scale ranging between 3 and 15 km and for initial distances smaller than 3 km. The third phase occurs for distance larger than 55 km, all pair velocities are uncorrelated and both relative diffusivity and characteristic dispersion time are approximately constants.

This preprint has been withdrawn.

Maher Bouzaiene et al.

Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Maher Bouzaiene et al.

Maher Bouzaiene et al.

Viewed

Total article views: 922 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
594 256 72 922 58 81
  • HTML: 594
  • PDF: 256
  • XML: 72
  • Total: 922
  • BibTeX: 58
  • EndNote: 81
Views and downloads (calculated since 30 May 2017)
Cumulative views and downloads (calculated since 30 May 2017)

Viewed (geographical distribution)

Total article views: 847 (including HTML, PDF, and XML) Thereof 845 with geography defined and 2 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Saved

No saved metrics found.

Discussed

No discussed metrics found.
Latest update: 04 Aug 2020
Publications Copernicus
Download
Withdrawal notice

This preprint has been withdrawn.

Short summary
The South Western Mediterranean, connected to the Atlantic Ocean through the Strait of Gibraltar, is a study area useful to describe the interaction between the light Atlantic Water and the denser Mediterranean Water. The spreading of fluid particles, estimated through the analysis of drifter data, is dominated by large mesoscale eddies at short times and small separation distances, and by small mesoscale structures for scale ranging between 3 and 11 km.
The South Western Mediterranean, connected to the Atlantic Ocean through the Strait of...
Citation