Video: French Mascaret on the Sealion (ola de marea)

[jaume]

Joe .... vaya ola más larga y rara ... parece ser que es una ola de marea en el rio Senna, una ola de elevación que corre hacia el estuario del rio debido a los cambios de marea ...

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The Mascaret of the Seine river
One of the most famous tidal bores was the mascaret of the Seine river, France (2). A tidal bore may form for large tidal ranges in a converging channel with a rising river bed (forming a funnel shape). The bore occurs as the tidal flow turns to rising. The mascaret of the Seine river had had a sinister reputation (3). For example, 112 ships were lost between Quilleboeuf and Villequier from 1789 to 1829. In the following 21 years, another 105 ships disappeared between Tancarville and Villequier (MALANDAIN 1988). The height of the bore front could reach up to 7.3 m and the bore front travelled at a celerity of about 2 to 10 m/s (BAZIN 1865, TRICKER 1965).

Seine river mascaret

The occurrence of the mascaret was not regular. Observed predominantly during large tides, its strength was a function of the sand bars (near Honfleur, Hode sur la Roque, la Roque sur Nez and le Nez du Quilleboeuf) and the bore could travel up to Rouen (nearly 80 km upstream). Following some river training around 1845-1850, the tidal bore disappeared until the end of 1858 when it re-appeared as strong as before. In the 1960s, the mascaret attracted a lot of tourists during the equinox tides, particularly at Caudebec-en-Caux where the bore amplitude was the greatest at the time (4). The mascaret nearly disappeared following the dredging of the Seine estuary and the new canal de Tancarville, completed in 1963 (5).

Near the mouth of the river (e.g. at Quilleboeuf), the Seine mascaret was a breaking bore (e.g. MALANDAIN 1988, p. 34). Further upstream the mascaret became an undular bore in the deeper sections of the river while a breaking front was observed near the banks.

 

[neira]

Pues no es por nada, pero el protagonista del video está haciendo el ridículo.
No respeta las normas de buena conducta del spot con sus continuas maniobras y obliga a los demás a guardar las distancias.

Espero que le llamasen la atención.

 

[Man Olo]

Hay unas cuantas olas de marea de embergadura en algunos los rios del planeta. Fenomeno impresionante.

Mascaret (Francia), Severn (Gales), Quiantang (China), Pororoca (Brasil),...


Saludos,
Man Olo

 

[SURFEADOR]

Si eso ocurre 2 veces al año, con las mares grandes de marzo y septiembre, creo que se llama en espanol los equinocios !!
un año he coinsidido con este fenómeno es bastante raro porque ecuentran un grupo de suferos en traje en un pueblito bastante lejo del mar, que se meten al agua en un rio, pero es divertido, porque surfea mas de 5 minutos jajaj

 

[yago wind]

es curioso el video parece un tio surfeando entre paraliticos

 

[jordi-navata]

nunca había visto nada igual.