EC6 - SPITS, TOMBOLOS AND SALT MARSHES


SPITS
Spits are formed when power of waves is reduced causing sediment deposition. The Sediment is built up over time forming a long ridge of material called a Spit. It is a sand or beach that sticks out into the sea but is joined to the land at one end. Spit formation occurs due to the process of Longshore Drift. Spit can change in direction at points due to secondary winds.

Screen_shot_2011-05-18_at_10.20.48.png Here's the animation of the Formation of Spits and Salt Marshes:)
COPY AND PASTE into your HTML if link doesn't work -- > http://whs.moodledo.co.uk/file.php/1365/Coastal%20Systems/Spit%20Formation,%20stage-by-stage.swf


//An area of sheltered water is created as vegetation grows on the spit itself. The sheltered water behind the spit becomes a salt marsh.
- The spits thatare large and stable enough can be used for recreational or residential properties.

E.G Chesil Beach, Dorset.
-- Found on the South coast of England
It is caused by Longshore drift on the coast of England.
It stretches over a distance of 29km
The Spit connects the mainland to the isle of Portland.

Screen_shot_2011-05-18_at_10.33.22.png



SALT MARSHES
Salt marshes are coastal wetlands found throughout the world on protected shorelines filled with marine life. They are found between high and low tides along low energy coasts. They are formed by seawater flooding and they are covered with grass-like plants.



TOMBOLOS
Tombolos are formed by wave refraction. It is a deposition landform where a spit of sand grows outward from the shore, eventually overtime connecting the island to the mainland by a long, narrow strip of sand, called a Tombolo.
work.4050090.1.flat,550x550,075,f.tombolo-palm-beach-sydney-australia.jpg
A Tombolo in Palm Beach, Sydney Australia









Sources :
http://www.ghttp://www.geography-site.co.uk/pages/physical/coastal/saltmarsh.htmeography-site.co.uk/pages/physical/coastal/saltmarsh.htm
http://www.google.com.sg/imglanding?q=tombolo&um=1&hl=en&tbm=isch&tbnid=Ju2E_0GVH0v9zM:&imgrefurl=http://www.redbubble.com/people/bryanfreeman/art/4050090-tombolo-palm-beach-sydney-australia&imgurl=http://ih0.redbubble.net/work.4050090.1.flat,550x550,075,f.tombolo-palm-beach-sydney-australia.jpg&w=550&h=310&ei=5ujMTazaCYmg-Aa4kf2QDA&zoom=1&iact=hc&page=3&tbnh=104&tbnw=184&start=28&ndsp=15&ved=1t:429,r:12,s:28&biw=1139&bih=603
http://www.youtube.com/watch?v=OlW2EfTf_m http://whs.moodledo.co.uk/mod/resource/view.php?id=963