This paper presents the complete Coastal Hazard Wheel (CHW) system, developed for multi-hazard-assessment and multi-hazard-management of coastal areas worldwide under a changing climate.
The system is designed as a low-tech tool that can be used in areas with limited data availability and institutional capacity and is therefore especially suited for applications in developing countries.
Variables such as local isostatic uplift/subsidence and sediment grain size have not been included as these to some extent are indirectly covered through other parameters.
The geological layout constitutes the basis on which the dynamic processes act.
It has been created by various past dynamic processes including glacial, fluvial, marine, volcanic and tectonic (Davis and Fitzgerald ).
The different classification components have been clearly defined in order to differentiate the generic coastal environments and to make the classification system practical applicable.
The definitions and assumptions for the different classification components are outlined below.
This paper therefore presents the refined coastal classification system used in the CHW 2.0, the standardized assessment procedure for implementation of multi-hazard-assessments, guidance on hazard management options for the different coastal environments and cost examples for the management options.
As the paper is meant as an overview article, it builds on the previous work on the CHW system and earlier references.The CHW constitutes a key for determining the characteristics of a particular coastline, its hazard profile and possible management options, and the system can be used for local, regional and national hazard screening and management.The system is developed to assess the main coastal hazards in a single process and covers the hazards of ecosystem disruption, gradual inundation, salt water intrusion, erosion and flooding.The system is developed to address a gap in the current methodologies for coastal hazard assessment and management which generally have high requirements for input data and domain expertise (Ramieri et al. The system is therefore especially suited for coastal hazard management in developing countries, where data availability and institutional capacity is limited.The system can be used for multi-hazard-assessment and multi-hazard-management at local, regional and national level and covers the hazards of ecosystem disruption, gradual inundation, salt water intrusion, erosion and flooding.These landforms form in the coastal-fluvial interface where riverine sediment supplied to the coastline is not removed by marine processes.