Mobile version

Flash flood at the Têt river mouth

Image of the Month - March 2018

Several outputs from the high resolution Symphony model, taking different parameters into account: left, the impact of waves on the coast, middle a 20-cm error on the sea level estimate, right a strong river discharge (and the sandbar at the mouth of the river). The Canet seaside resort is more or less impacted depending on the parameters included in the model (Credits Aerology Laboratory Toulouse)

 

On the Roussillon coast of France (West of the Gulf of Lion, North of the Iberic peninsula border on the Mediterranean Sea) several rivers flow into the sea. Those rivers (the Agly, Têt and Tech) come from the Pyrenees mountains and tend to undergo flash flood episodes during Winter storms but also Summer thunderstorms. During Winter storms, though, you can also have high waves, low pressure, strong winds adding to the phenomena. Modelling such phenomena at the rivers' mouth is important to help mitigate effects, build appropriate infrastructures and keep inhabitants informed.

With Swot, the altimetry measurements used for the models will be more coastal, and over an number of rivers too, with high resolution and more revisit over an area. It won't enable to see the flash floods and their immediate consequences when they occur most of the time probably, but it will help understand and forecast better their spread and impacts on the river banks, mouths and on the coasts nearby.

See also:

Reference:

  • Michaud H., Marsaleix P., Leredde Y., Estournel C., Bourrin F., Lyard F., Mayet C., Ardhuin F., 2012. Three-dimensional modelling of wave-induced current from the surf zone to the inner shelf. Ocean Science, 8, 657-681, http://dx.doi.org/10.5194/os-8-657-2012
EnglishFrançais
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!