Author(s): Vasileios Boumpoulis; Nikolaos Depountis; Theodoros Bouas
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Abstract: Climate change is expected to increase the frequency and intensity of climate induced extreme events (IPCC, 2021), while the impacts in coastal zones it is considering to be huge, even under small emission scenarios (IPCC, 2022). Moreover, coastal areas are vulnerable and susceptible to coastal hazards and their protection is under a great importance for the ecosystem, the society and the economy. Many methodologies have been developed for analysis incorporating the terms of risk, hazard, vulnerability, and exposure. The most common method to assess vulnerability is the Coastal Vulnerability Index (CVI), which integrates heterogeneous data sources and indicators for the vulnerability classification of the coastal zone. Two of the most most interfering variables in CVI calculations are the geotechnical variable and the shoreline evolution rate (Boumpoulis et al., 2021). Therefore, one of the main purposes of this study is the assessment of the vulnerability regime in coastal areas using a weighted CVI model with emphasis on the geotechnical variable. In addition, the Multi-Criteria Decision Analysis (MCDA) method of Analytical Hierarchy Process (AHP) is implemented to weight and prioritize criteria and key indicators as it has been proposed by Saaty (1977). As a model area it was selected the Gulf of Patras in Western Greece because of its diachronic erosion problems due to the climate change and most of the data used were collected from the coastal monitoring activities that had been peformed in the frame of TRITON project (Nikolakopoulos et al, 2019).
Year: 2022