Mobile version

Drifting buoy

Image of the Month - May 2013

Sea Level Anomalies at the moment of Acciona capsize (Feb. 3, 2013) and nearly 3 months later (April 30) with the path of the drifting beacon overlaid. See the animation (mpeg4, 830 KB or avi, 1.2MB) (Locations Argos, buoy followed in the Argonautica educational project frame)

The Acciona sailing boat, which took part in last Vendée Globe alone-the-world sailing race, is a ship entirely powered by renewable energies, without any fossil fuel onboard. There were only 1,400 milles left (about 5 days) to the finish line in the Sable d'Olonne harbour when she capsized on February 3 near the Azores Islands (at  31° 59.00 N and 27 26.24 W), after 85 days of navigation over more than 26 000 milles alone, without stop nor assistance nor CO2 emission. The skipper, Javier "Bubi" Sanso, could get into the life boat and was rescued by the Portuguese coast guards. The ship was retrieved 3 days later.

During the capsize, one of the onboard Argos beacons got loose and switched on. The locations of this beacon, floating over the Atlantic ocean, were added to those already distributed by CNES educational project Argonautica, for which several other Argos beacons were already launched by other skippers during the Vendée Globe alone-the-world sailing race. Since then, this beacon has drifted along the currents with probably a little help from winds. It rounded a few eddies, some clockwise (the "hills" of the ocean topography, in red in the animation) or anti-clockwise (the 'valleys', or troughs in the ocean topography, in blue in the animation).

Satellites enable an unprecedented vision of the ocean, either directly by instruments observing its surface characteristics  (height, temperature, color...) or indirectly by collecting measurements made by in situ buoys.

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!