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2. The Coastal Risk Assessment Framework (CRAF)

  • Description
  • The tools
  • Documentation and presentations
  • More information

 

DESCRIPTION

The Coastal Risk Assessment Framework (CRAF) answers the question where areas of increased coastal risk (so-called hotspots) are located. The CRAF takes a two-step approach to select these hotspots:

 

Phase 1: Identification of potential hotspots
Along the coast, potential hotspots, i.e. sectors with a high potential exposure, are determined for different hazard indicators (e.g. wave overtopping, flooding and coastal erosion) and for different exposure indicators (land use, social, transport, utilities and economic activities). Results are presented in the form of a coastal exposure index, using the Coastal Vulnerability Indicator Library [T1] and [D1]. The results of the CRAF phase 1 are visualized in the web-based viewer [T2].

Phase 2: Hotspots risk analysis and selection
The potential hotspots are further analysed to Identify of the most critical hotspots based on current and future climate scenarios using more advanced hazard and impact assessment models. The models used are:
- XBeach (1D) [T3] a morphodynamic model to compute hazards of overtopping and erosion for selected return-period storms
- LISFLOOD [T5]: an inundation model to compute the hazards flood depth and velocities based on the computed overtopping.
- INDRA (Integrated DisRuption Assessment) to compute the impacts of various categories and score the hotspots using a Multi-Criteria Analysis (MCA).
The sequence is as follows:

 

 

THE TOOLS

  Tool Link
T1      Coastal Vulnerability Indicator Library      CVI Library [.xls downloads with click]
T2 Web-based Viewer  http://al-ng017.xtr.deltares.nl/risckit/index.htm 
T3 XBeach  http://xbeach.org
T4 CRAF 2 Setup Scripts  CRAF_2_setup_scripts [.rar downloads with click]
T5 LISFLOOD  http://www.bristol.ac.uk/geography/research/hydrology/models/lisflood/
T6 INDRA Model INDRA model [.zip downloads with click]
T7 Delft Dashboard  https://publicwiki.deltares.nl/display/OET/DelftDashboard

 

DOCUMENTATION AND PRESENTATIONS

  Name Presentation
D1       Coastal Vulnerability Indicator Library: Guidance document     

 [.pdf]

D2  CRAF Guidance  [.pdf]     
P1  CRAF2 hazard modelling  [.pdf] and  [.pdf]     
P2  INDRA  [.pdf]

 

MORE INFORMATION

Christophe Viavattene, Middlesex University, [c.viavattene()mdx.ac.uk]
Jose Jimenez, Polytechnic University of Catalonia, [jose.jimenez()upc.edu]

 

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