Ordnance Survey Maps – Coastal Features

A brief summary

                                    

                        

headland

Bay identifiableby shape ofcoastline

Caves will be clearly marked on the O.S. map

Use O.S. symbolsto help you identify features like cliffs

Image produced from the Ordnance Survey Get-a-map service. Image reproduced with kind permission of Ordnance Survey and Ordnance Survey of Northern Ireland.

                                    

                        

Groynes whichtrap sedimentmoved bylongshoredrift tomaintain beach

Differential erosion – headland and bay

Headland isharder rockand erodesslowly

Image produced from the Ordnance Survey Get-a-map service. Image reproduced with kind permission of Ordnance Survey and Ordnance Survey of Northern Ireland.

                                    

                        

Headlands can be eroded into caves, arches and stacks

Old Harry stackand Old Harry’sWife stump

Image produced from the Ordnance Survey Get-a-map service. Image reproduced with kind permission of Ordnance Survey and Ordnance Survey of Northern Ireland.

                                    

                        

Here are some less easily identifiable features – named for you!

Cove – Differentialerosion

Durdle door arch

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Spit developsin directionof longshore drift

Longshore drift

Salt marshdevelops in slack water behindspit

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Spit often hooks rounddue to direction ofprevailing winds- youcan see this has happened on severaloccasions here

This area isstarting to‘silt’ up – marshpresent to left

Image produced from the Ordnance Survey Get-a-map service. Image reproduced with kind permission of Ordnance Survey and Ordnance Survey of Northern Ireland.

                                    

                        

lagoon

Sand bartombolo

Image produced from the Ordnance Survey Get-a-map service. Image reproduced with kind permission of Ordnance Survey and Ordnance Survey of Northern Ireland.