Utente:Vid395/Sandbox
Un'isola tidale, dall'inglese tide, marea, è un'isola collegata al continente (o ad altra isola più grande) da un tombolo, una banda sabbiosa che periodicamente viene ricoperta dalle acque durante l'alta marea, e come tale viene definito piano mesolitorale.
È una situazione geologica di per sé instabile, che si crea proprio per tale natura. Ne deriva che frequentemente tale isole sono utilizzate per costruzioni particolari (fortezze, abbazie). Esempi famosi sono il Mont Saint Michel e la Penisola di Giens in Francia, il Castello Aragonese di Ischia in Italia e St Michael's Mount in Inghilterra.
Sono pertanto isole accessibili soltanto nei periodi di bassa marea, tramite il loro tombolo sul quale viene spesso costruito un argine istmico, o diga, per facilitarne l'accesso, diga che viene interamente sommersa dall'alta marea, isolandole così del tutto.
Exemples
Stati Uniti d'America
France
- Berder (golfe du Morbihan, Morbihan)
- Callot (Carantec, Finistère)
- Île Carn (Finistère)
- Ebihens (Côtes-d'Armor)
- Fort Enet (Fouras, Charente-Maritime)
- Fort Louvois (Bourcefranc-le-Chapus, Charente-Maritime)
- Grand Bé (Saint-Malo, Ille-et-Vilaine)
- Île Madame (Charente-Maritime)
- Île Milliau (Trébeurden, Côtes-d'Armor)
- Mont-Saint-Michel (Manche)
- Île de Noirmoutier (Vendée)
- Île Raguenès (Finistère)
- Îlot Saint-Michel (Côtes-d'Armor)
- Tatihou (Saint-Vaast-la-Hougue, Manche)
- Tascon (golfe du Morbihan)
- Tombelaine (près du Mont-Saint-Michel)
- île de Nôle (Bourcefranc-le-Chapus, Charente-Maritime)
- Fort Bloqué (Ploemeur, Morbihan)
Îles anglo-normandes
- L'Islet, emplacement du château Élisabeth à Jersey
- Lihou (reliée à Guernesey)
- Fort de Saint-Aubin, à Jersey
Inde
- Mausolée Haji Ali à Mumbai
Indonésie
Irlande
Royaume-Uni
- Baleshare (Orcades, reliée à North Uist par une chaussée)
- Brough of Birsay (Orcades, reliée à West Mainland)
- Burgh Island, Devon, Angleterre
- Cramond, Édimbourg, Écosse
- Lindisfarne, Northumberland, Angleterre
- Northey, Essex
- Osea, Essex
- Oronsey, Hébrides intérieures (reliée à Colonsay)
- St Michael's Mount, Penwith, Cornouailles, Angleterre
Voir aussi
Altri progetti
Wikimedia Commons contiene immagini o altri file su Vid395/Sandbox
A tidal island is a piece of land that is connected to the mainland by a natural or man-made causeway that is exposed at low tide and submerged at high tide. Because of the mystique surrounding tidal islands many of them have been sites of religious worship, such as Mont Saint Michel with its Benedictine Abbey. Tidal islands are also commonly the sites of fortresses, due to their natural fortifications.
The former Bennelong Island in Sydney, Australia was developed into Bennelong Point and is now the ___location of the Sydney Opera House.
Tidal Islands of the World
Canada
Francia
Germany/Denmark
- The Halligen in the North Frisian Islands, Germany/Denmark
Guernsey
- Lihou in Guernsey, one of the Channel Islands
Ireland
United Kingdom
- Baleshare in the Outer Hebrides, Scotland
- Brough of Birsay in Orkney, Scotland
- Burgh Island in Devon, England
- Chapel Island in Cumbria, England
- Cramond Island, Edinburgh, Scotland
- Davaar Island near Campbeltown, on the Kintyre peninsula, Scotland
- Gugh in the Isles of Scilly, Great Britain
- Hilbre Island in the River Dee estuary, between North Wales and the English Wirral
- Llanddwyn Island off Anglesey in North Wales
- Lindisfarne in Northumberland, England
- Northey Island in Essex, England
- Oronsay in the Inner Hebrides, Scotland
- Osea Island in Essex, England
- Rough Island opposite Rockcliffe, Dumfries & Galloway, Scotland
- Sheep Island in Cumbria, England
- St Michael's Mount in Penwith, Cornwall, Great Britain
- St Mary's Lighthouse in North Tyneside, England
- Sully Island in the Vale of Glamorgan, Wales
- Worm's Head at the end of Gower, Wales
See also