DUNGENESS COASTLINEDUNGENESS COASTLINE

By By

Tim McMahonTim McMahon

Richard SmithRichard Smith

AgendaAgenda

1.1. Site Description Site Description

2.2. Geology and Current Problem Geology and Current Problem

3.3. Possible OptionsPossible Options

4.4. Chosen SolutionChosen Solution

5.5. Conclusion Conclusion

Site Description Site Description

Map / LocationMap / Location Largest example of shingle beaches in UK.Largest example of shingle beaches in UK. 38 km stretch of coastline in Kent and East 38 km stretch of coastline in Kent and East Sussex.Sussex.

Site DescriptionSite Description Geographical featuresGeographical features

8 sq.miles of exposed shingle8 sq.miles of exposed shingle – ‘cuspate’ foreland – ‘cuspate’ foreland Habitat for much wildlife and vegetation Habitat for much wildlife and vegetation Townships in Walland MarshTownships in Walland Marsh MoD firing rangesMoD firing ranges Power StationsPower Stations ObservatoryObservatory AgricultureAgriculture AggregateAggregate

Geology and ProblemGeology and Problem Formation of GeologyFormation of Geology

Geomorphologic Process over 4,000 years Geomorphologic Process over 4,000 years Longshore Drift – carries material from West to EastLongshore Drift – carries material from West to East Extreme western flank is eroding at 2m per year: 200,000 tonnes of Extreme western flank is eroding at 2m per year: 200,000 tonnes of shingle per yrshingle per yr Three chronological stages: 1) >10,000BC, 2) 1200 – 1800AD, 3) 1700 - Three chronological stages: 1) >10,000BC, 2) 1200 – 1800AD, 3) 1700 - presentpresent Composition: 98% flint Composition: 98% flint

Geology and ProblemGeology and Problem Current ProblemCurrent Problem

Deficit of material immediately in front of the nuclear power Deficit of material immediately in front of the nuclear power stations stations If ‘do nothing’, over the next 50 yrs £250,000,000 damage.If ‘do nothing’, over the next 50 yrs £250,000,000 damage.

Damage to propertyDamage to property Loss of MoD Training FacilitiesLoss of MoD Training Facilities Loss of power stations, and the complete loss of whole towns.Loss of power stations, and the complete loss of whole towns.

Possible OptionsPossible Options Required StandardsRequired Standards

-Nuclear Power Plant-Nuclear Power Plant-Surrounding Areas-Surrounding Areas-Environment-Environment-Economy -Economy -Engineering-Engineering

Do NothingDo Nothing Continuation of Current PracticesContinuation of Current Practices Construction of New GroynesConstruction of New Groynes Removal of Rye Harbour Terminal GroyneRemoval of Rye Harbour Terminal Groyne Sea WallSea Wall

Chosen SolutionChosen Solution Continuation of Present PracticesContinuation of Present Practices How it WorksHow it Works AdvantagesAdvantages DisadvantagesDisadvantages ImprovementsImprovements

ConclusionConclusion

Geology and its ConsequencesGeology and its Consequences The ProblemThe Problem

- Long-shore Drift - Long-shore Drift

- Nuclear Power Plant- Nuclear Power Plant

- The three E’s- The three E’s

The SolutionThe Solution The FutureThe Future