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Our Shoreline

SMP sediment cells, click to enlarge mapSMP Subcell 5F

SMPs divide the shoreline of England & Wales into a series of cells and subcells (map right, click to enlarge), defined by coastal type and processes such as the movement of sediment (sand, shingle, etc) within and between them. 

The shoreline from Durlston Head to Hurst Spit is known as Subcell 5F.

Process & Management Units

Subcell 5F covers a total of 190km, or 118 miles of coastline including harbours and estuaries, and for SMP1 were contains seven 'Process Units' identified by 3 letters on the map below (e.g. DUR is Durlston Bay).  Process Units are subdivided into a number of 'Management Units' (also known as 'Policy Units')

Note: During the 2009-2010 review the seven SMP1 Process Units were dropped in favour of four Policy Development Zones (PDZs) - future updates to this section will reflect those changes.

Click on any link or section or the image below for a brief description of the issues considered by the review for each of the SMP1 Process Units: 

Our Shoreline / Durlston Bay / Swanage Bay / Studland Bay / Poole Harbour / Poole Bay / Christchurch Harbour / Christchurch Bay / Hurst Spit

Our Shoreline (click on any section or image for a brief description of the issues to be considered for each of the Process Units

Our Shoreline / Durlston Bay / Swanage Bay / Studland Bay / Poole Harbour / Poole Bay / Christchurch Harbour / Christchurch Bay / Hurst Spit

Sediment Transport (click to enlarge)

Sediment transport, Poole & Christchurch Bays

Map courtesy of SCOPAC (www.scopac.org.uk)

This map (left) illustrates the movement of beach sediment  - predominantly sand and gravels - along our shoreline, driven by wave energy and direction.  This process is also known as longshore drift.

Beach sediment moves from west to east along most of the Dorset coast, but prolonged periods of east or southeast winds can reverse this trend.

By interrupting longshore movement, sediment can be contained on a beach to provide not only an improved recreational facility, but an effective natural coastal defence.  Groynes are the most commonly used method, but interruption of sediment movement along any coast can cause serious problems downdrift through sediment 'starvation', and the potential for increased erosion.

For further information about coastal processes visit the Dorset Coast Digital Archive website.

 

 

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© 2007-2009 Poole & Christchurch Bays Coastal Group. 

Updated 02 August 2009