Understanding the Cognitive Components of Coastal Risk Assessment

Nowadays, erosion and flooding risks represent a serious threat to coastal areas and this trend will be worsened due to climate change. The increasing concentration of population in coastal areas has a negative impact on the coastal ecosystem due to change in land use and the exploitation of natural resources, which has also increased exposure to coastal hazards. Risk assessment is hence a primary topic in coastal areas and are often affected by mismanagement and competition of interest between stakeholders. This paper presents an integrated model for coastal risk assessment as well as its application on a test site in the Puglia Region (Southern Italy). An innovative approach has been developed combining a traditional index-based model, exploiting a Drivers-Pressures-State-Impact-Response framework (DPSIR), with stakeholder’s and policy makers’ engagement by using the Future Workshop method and complementary individual working sessions structured through the use of Fuzzy-Cognitive Maps. The study shows that stakeholders’ and policy makers’ risk perception play a key role in coastal risk management and that the integration of physical risk with social perception is relevant to develop more effective management following the basics of Integrated Coastal Zone Management.

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Coastal risk assessments due to hybrid disasters in Korea

10.5194/egusphere-egu2020-13590 ◽

2020 ◽

Author(s):

Tae-Soon Kang ◽

Hyeong-Min Oh ◽

Soon-Mi Hwang ◽

Ho-Kyun Kim ◽

Kwang-Young Jeong

Keyword(s):

Climate Change ◽

Risk Assessment ◽

Storm Surge ◽

Risk Index ◽

Coastal Areas ◽

Observation Data ◽

Blue Color ◽

Wave Overtopping ◽

Coastal Risk Assessment ◽

Coastal Risk

<p>Korean coasts are exposed to high risks such as storm surge, storm-induced high waves and wave overtopping. Also, localized heavy rainfall events have occurred frequently due to climate change, too. Especially, since coastal urban areas depend heavily on pump and pipe systems, extreme rainfalls that exceed the design capacity of drainage facility result in increasing inland flood damage. Nevertheless, the population in Korea is concentrated in the coastal areas and the value and density of coastal utilization are increasing. In this study, the risk of hybrid disasters in the coastal areas was assessed for safe utilization and value enhancement of coastal areas. The framework of the coastal risk assessment has been adopted from the concept of climate change vulnerability of the IPCC(2001). Coastal Risk Index(CRI) in this study was defined as a function of Exposure and Sensitivity exclude Adaptive Capacity using GIS-based DBs. Indicators of Exposure consisted of a storm surge, storm-induced high waves, wave overtopping and rainfalls. Indicators of Sensitivity consisted of human(population density), property(buildings and roads), and geography(inundation area). All these indicators were gathered from government agencies, numerical model experiments(ADCIRC, unSWAN, FLOW3D and XP-SWMM model), and field surveys(Drone & Lidar survey). And then spatial analysis was performed by using a GIS program after passing the quality control and analyzed data were standardized and classified 4 grades; Attention(blue color), Caution(yellow color), Warning(orange color) and Danger(red color). This frame of risk assessment was first applied to Marine City, Haeundae in Busan, Korea which was heavily damaged by the typhoon CHABA in 2018. According to the assessment results, it was confirmed that the results were in good agreement with the observation data and damage range. At present, the study area of risk assessment is expanding to other areas. The results of coastal risk assessment are used as reference indicators to identify and prevent the cause of coastal disasters, establish countermeasures, determine the development or management of coastal areas based on GIS, thus will contribute to effective and safe coastal management.</p>

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BARBADOS COASTAL RISK ASSESSMENT AND MANAGEMENT PROGRAMME

Coastal Engineering Proceedings ◽

10.9753/icce.v36.risk.52 ◽

2018 ◽

pp. 52

Author(s):

Kevin MacIntosh ◽

Derek Williamson ◽

Matthew Armstrong ◽

Leo Brewster ◽

Ricardo Arthur

Keyword(s):

Risk Assessment ◽

Coastal Zone ◽

Coastal Zone Management ◽

Coastal Environments ◽

Management Planning ◽

Zone Management ◽

Coastal Risk Assessment ◽

The Government ◽

Coastal Risk ◽

Risk Assessment And Management

Monitoring of coastal environments is critical to understanding the responses of the natural environment to human interventions. The ability to definitively attribute impacts to a development versus those which are part of the natural variation of a dynamic system is a valuable tool to understanding the successes and failures of coastal zone management planning. The Coastal Zone Management Unit of the Government of Barbados (CZMU) undertook the Coastal Risk Assessment and Management (CRMP) project to define the baseline conditions and risks for the entire coastline of Barbados in order to have this comprehensive database upon which to base future decisions and coastal planning. This paper will focus on three of the nine baseline studies and the unique approaches used, and challenges encountered, along the way.

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ASSESSMENT OF COASTAL RECEPTORSâ€™ EXPOSURE VULNERABILITY TO FLOOD HAZARD ALONG VARNA REGIONAL COAST

Coastal Engineering Proceedings ◽

10.9753/icce.v35.management.8 ◽

2017 ◽

pp. 8

Author(s):

Nataliya Kamenova Andreeva ◽

Nikolay Valchev ◽

Bogdan Prodanov ◽

Petya Eftimova ◽

Iliyan Kotsev ◽

...

Keyword(s):

Flood Hazard ◽

Human Life ◽

Coastal Hazards ◽

Screening Process ◽

Flooding Hazard ◽

Coastal Risk Assessment ◽

Coastal Risk ◽

Direct And Indirect Impacts ◽

Indirect Impacts ◽

Exposure Indicators

Storms and related disasters are phenomena producing coastal hazards and endangering human life and occupation. The study evaluates coastal receptorsâ€™ exposure and their vulnerability to storm-induced flooding hazard along Varna regional coast in Western Black Sea, Bulgaria. The assessment is performed employing the Coastal Risk Assessment Framework (CRAF) developed within EU FP7 RISC-KIT project. It constitutes a screening process that allows determination of susceptible alongshore sectors (hotspots) by assessing relevant hazard intensities, hazard extents and potential receptorsâ€™ exposure vulnerability within them by means of coastal indices approach. The ultimate goal is to evaluate potential risk posed by flooding in support to coastal managers, decision and policy makers. Assessment of coastal receptorsâ€™ exposure vulnerability is done by exposure indicators approach, using hazard intensities and flooding extents relevant to return period of 100 years. The approach consists of combining several indicators into a single index, thereby allowing a rapid comparison of coastal sectors. Five types of receptors are considered to formulate the relevant exposure indicators: Land Use, Population, Transport, Utilities and Business, which subsequently are combined into an Overall Exposure Indicator to evaluate potential direct and indirect impacts. Results show that the most vulnerable to coastal flooding in terms of exposure are coastal sectors located within Varna Bay, comprising port and industry facilities with regional, national and international significance.

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