Concepts and Science for Coastal Erosion Management Guidelines for implementation of coastal erosion management at national, regional and local levels Jan Mulder Saskia Hommes Deltares / University of Twente (Netherlands)

Concepts and Science for Coastal Erosion Management Guidelines for implementation of coastal erosion management at national, regional and local levels

Concepts and Science for Coastal Erosion Management Guidelines for implementation of coastal erosion management at national, regional and local levels

Concepts and Science for Coastal Erosion Management Guidelines for implementation of coastal erosion management at national, regional and local levels

Concepts and Science for Coastal Erosion Management Guidelines for implementation of coastal erosion management at national, regional and local levels

Concepts and Science for Coastal Erosion Management Guidelines for implementation of coastal erosion management at national, regional and local levels large diversity, both at physical - and at policy- and management levels

Concepts and Science for Coastal Erosion Management Guidelines for implementation of coastal erosion management at national, regional and local levels a systematic approach : Frame of Reference

Concepts and Science for Coastal Erosion Management a systematic approach :question loop

Concepts and Science for Coastal Erosion Management a systematic approach : question loop Make problems, choices and responsibilities explicit ! Lovely ocean, I must say.. It is just the coast line that worries me ….

Concepts and Science for Coastal Erosion Management WHAT is achieved ? HOW can it be tackled ? WHAT is the problem ? a systematic approach :question loop

Concepts and Science for Coastal Erosion Management a systematic approach :question loop What is the problem ? WHY is it a problem? functions ? regulations ? policy goals ? physical causes ? WHO is concerned ? interests ? power ? responsibility ? finances ? WHAT should be achieved ? Set objectives WHO is responsible ? Specify examples: preserve dune strength maintain beach configuration reduce coastal erosion prevent damage to infrastructure

Concepts and Science for Coastal Erosion Management a systematic approach :question loop How big is it ? What is the problem ? WHAT measurable indicator(s) describe the objectives? What time- and space scales are involved ? What data are available ? What monitoring is needed ? What modelling is applicable ? WHO is responsible ? Decision making process barrier width dune heigth beach width shore line position shoreface volume coastal cell volume etc.

Concepts and Science for Coastal Erosion Management a systematic approach :question loop How big is it ? What is the problem ? Action needed ; yes / no? WHERE and WHEN do the indicator(s) reach a critical value ? Benchmarking ! What data are available ? What monitoring is needed ? What modelling is applicable ? WHO is responsible ? definition of desired state favourable sediment status

Concepts and Science for Coastal Erosion Management a systematic approach :question loop How big is it ? What is the problem ? Action needed ; yes / no? What intervention is applicable ? HOW to restore or maintain the desired state of the indicator(s) ? Choice of intervention method WHO is responsible ? organization of erosion management finances strategic sediment reservoir

Concepts and Science for Coastal Erosion Management a systematic approach :question loop How big is it ? Action needed ; yes / no? Does it work out ? What is the problem ? What intervention is applicable ? WHAT is achieved by the intervention method ? evaluation of effects WHO is responsible ? decision making process

Concepts and Science for Coastal Erosion Management How big is it ? Action needed ; yes / no? Does it work out ? What is the problem ? What intervention is applicable ?

Concepts and Science for Coastal Erosion Management HomeHome / Guidelines / HOW TO DO IT ? / decision loopGuidelines COASTAL EROSION > what is it ? > when is it a problem ? WHAT CAN BE DONE ? > key concepts > framework for coastal erosion management > turning data into information > potential interventions > set back lines > use of models > EU policies and directives HOW TO DO IT ? > systematic approach > decision loop LINKS > relevant weblinks

Concepts and Science for Coastal Erosion Management a systematic approach : question loop Make problems, choices and responsibilities explicit ! Lovely ocean, I must say.. It is just the coast line that worries me …. What the **** do you mean ?

Concepts and Science for Coastal Erosion Management Thank you

Concepts and Science for Coastal Erosion Management

Concepts and Science for Coastal Erosion Management