Wadi flood impact assessment of the 2002 cyclonic storm in Dhofar, Oman under present and future sea level conditions

Autor: Ruben Dahm, John Radke, Amna Al Ruheili
Rok vydání: 2019
Předmět:
Zdroj: Journal of Arid Environments. 165:73-80
ISSN: 0140-1963
DOI: 10.1016/j.jaridenv.2019.04.002
Popis: Oman witnessed exposure to various cyclones during the last decade including Gonu (2007), Phet (2010), Keila (2015; Dhofar), and Mekunu (2018; Dhofar). The purpose of this study is to assess flood damage due to flash wadi (dry river bed) flooding in Dhofar under present and future sea level conditions. This study uses a 3Di hydrodynamic model and a damage model to quantify the flood extent and flood damage due to the 2002 cyclonic storm (ARB01) and to identify vulnerable infrastructure in two watersheds: Zayk and Ghadow. The impact of the storm is assessed under present day and predicted 1.41 m sea level rise (SLR) conditions. The results show that with present sea level conditions the residential damage was estimated at US$ 10.79M and US$ 32.98M for Zayk and Ghadow respectively. Under a 1.41 m SLR scenario, the residential damage is projected to increase to US$ 13.65M (26.5%) and US$ 40.28M (22.1%) for Zayk and Ghadow respectively under a similar cyclonic storm event. These results provide knowledge to make informed policy decisions that contribute to the development of resilient infrastructure. It also provides a flood damage assessment of a potential future to prepare Oman for challenges under sea level rise.
Databáze: OpenAIRE
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