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- W4313372286 abstract "Coastal inundations are frequent natural events that are caused due to increase in tidal amplitudes triggered by the cyclone, storm surge, extreme rainfall, thermal expansion of oceanic waters, tectonic movements, and many other factors. Despite flooding being an essential part of the natural system, these natural events have been considered disastrous since they have a negative effect on human activities. Land use change and emissions due to anthropogenic activities have led to an increase in climatic extremes. Globally, accelerating temperatures have led to an increase in the intensity and frequency of cyclonic events and localized flooding. Inundation of coastal areas would damage agriculture yield, assets, socio-economic livelihood, natural habitats, and ecosystems. The goal of the current research is to determine the flood exposure in Sagar Island caused by storm surges, severe rainfall events, and rising sea levels. The goal was achieved by spatially overlaying two objectives, viz. (i) Land use dynamics modeling for identifying assets, houses and (ii) Flood inundation modeling. Agent-based land use change model has been used to visualize the likely change pattern for the year 2050. Zero connectivity bathtub model was used to spatially determine flood inundation exposure of the Island. Zero connectivity bathtub model assumes that all cells with elevations lesser than the threshold are subjected to flooding. Threshold in the current study was determined based on variable sea-level rise due to cyclonic storms, severe rainfall events, and topographic conditions. Population and landscapes elements that are likely to be exposed for the current and future time periods are derived based on statistical data acquired from Census of India, land use patterns, and inundation levels. The results illustrate in Sagar, the tidal height rise varies with the type of storms and quantum of local precipitation. Land use assessment indicates loss of native vegetation, increase in human-centric activities, such as housing and agriculture, resulting in increased exposure to inundation. A tide of 2 m amplitude beyond the high tide which frequently expose 32 km2 of cultivable landscapes (Agriculture and Horticulture), 5193 houses for the current time (2020), and by 2050 about 31 km2 of cultivable landscapes and 10,870 houses get exposed. With tides reaching 6 m threshold, 41,632 houses and 122,712 houses are likely to be exposed in 2020 and by 2050, respectively. The current approach and findings of this study pave the way for the governing authorities and planners to prioritize mitigative measures, strategies that are region specific to reduce the impact, and risks of coastal flood inundation due to natural hazards." @default.
- W4313372286 created "2023-01-06" @default.
- W4313372286 creator A5029669301 @default.
- W4313372286 creator A5036548506 @default.
- W4313372286 date "2022-01-01" @default.
- W4313372286 modified "2023-10-16" @default.
- W4313372286 title "Geo-spatial Modeling of Coastal Flood Exposures Due to Local Sea-Level Rise and Landscape Dynamics: A Case of Sagar Island" @default.
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- W4313372286 doi "https://doi.org/10.1007/978-3-031-14096-9_17" @default.
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