Mobile version

A corridor of eddies

Image of the Month - June 2009


Eddies are seemingly sowed more or less haphazardly in the ocean (Image of the Month, September 2007). However, regular features exist, especially when there are dominant winds and/or currents, and islands or other topographic features. The "Canary Eddy Corridor" is a recurrent feature that can be detected in the more than 16 years of merged altimeter data. The phenomenon is an East-West corridor of eddies, born of the perturbation of the Canary Current flow and of the Trade Winds at Canary Islands. It extends from the Canaries to at least 32°W, close to the Mid Atlantic Central Ridge. Anticyclonic long-lived eddies (a few years life span) have been observed as far west as 50°W, well beyond this Ridge.

Altimeter observations and drifter trajectories indicate that the eddies in this corridor first propagate South (following the Canary Current flow); then, at about (18°W, 25°N), they move westward (with a slight southward direction for anticyclonic eddies), on average at about one degree per month.

The availability of a long series of altimetry measurements enable to detect and visualise permanent features of the ocean dynamics.

See also:


  • Sangrà, P., A. Pascual, Á. Rodríguez-Santana, F. Machín, E. Mason, J.C. McWilliams, J.L. Pelegrí, C. Dong, A. Rubio, J. Arístegui, Á. Marrero-Díaz, A. Hernández-Guerra, A. Martínez-Marrero, M. Auladell, The Canary Eddy Corridor: a major pathway for long-lived eddies in the subtropical North Atlantic, submitted to Deep Sea Research
Rss feedsContactPartnersFAQLexiconLegal noticePersonal Data Protection PolicyMobile
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

This 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!