Mobile version

Dispersion in the Mediterranean Sea

Image of the Month - December 2020

A number of things are moving passively with the ocean circulation -- pollutant, phytoplankton, fish eggs and larvae, jellyfish... Estimating how they disperse is thus important for a wide variety of reasons. In the Mediterranean Sea, where the basin is almost enclosed, with populated and very touristic coasts, and a complex geography of sub-basins with their own characteristics, this is all the more useful. 
The filaments (FLSE) data are a way of representing the dispersion. Where they are close to zero, two particles located there will stay close to each other a long time. Far from zero the two particles will move away from each other. Low dispersions are localized in the eddies core and the stretching of the fluid parcels are in their outer part. They can thus give an idea of the mean mesoscale features in the different Mediterranean sub-basins.
A study compares those to surface drifter data over the different Mediterranean basins. The drifters are paired (either by design, by having launched by two, or taking benefit of chance proximity), and the tracks of the pairs are used to compute dispersion estimates. The surface flow dispersion regimes seen are different depending on the basins: more isotropic in the Aegean Sea, anisotropic where the zonal motion is dominant.

A better knowledge of surface circulation even in a Sea as studied as the Mediterranean Sea can help in fighting pollution dispersal, or warning of jellyfish presence, etc. Satellite altimetry, combined with other techniques can help, with new techniques to exploit the data appearing along the years. 

See also:

Reference:

  • Bouzaiene M, Menna M, Poulain P-M, Bussani A and Elhmaidi D (2020) Analysis of the Surface Dispersion in the Mediterranean Sub-Basins. Front. Mar. Sci. 7:486. doi: 10.3389/fmars.2020.00486
EnglishFrançaisEspañol
Rss feedsContactPartnersFAQLexiconMobile
You must enable cookies in your browser preferences to save the modifications
You are using an older version of Internet Explorer, please update to take full advantage of Aviso+ features

Customize the home page

View all widgets
-->
Reduce display
Public profile
User profile

Select/Deselect widgets

Discover AVISO+

Customizable home, reading tools, products search guide, etc.. Discover step by step the features of the new site AVISO+.

Customizable homepage

The new home page is composed of blocks called "widgets".

Rearrange the blocks with a "Click & Drop".

Hide a widget with the cross at the top right. Reset or add a widget with the "wrench" icon. The "User" and "Public" profiles offer a predefined organization.

All the modifications are automatically saved as cookies on your machine so as to enable you to have your own specific AVISO+.

Reading tools

Ease your reading by choosing the page background colour (black/white) and/or by modifying the font size.

Browsing menu and breadcrum trail

To ease your browsing through AVISO+, you can use at any time the main banner items with the interactive submenus or use the browsing menu on the left side of the screen (it is open by default). For more readiness of the page contents, you can fold and unfold the browsing menu by clicking on the tab. At any time you can know where you are thanks to the browsing menu or the breadcrum at the top of the page.

Products search guide

The first submenu of the "Data" banner item leads you to a new search form enabling you to find quickier the product that suits your needs. The list of results is updated according to your selection criteria.

AVISO+ Multimedia

The first submenu of the "Multimedia" banner item leads you to AVISO+ collections of images and videos linked to altimetry and its applications. Have a nice visit!