High tide event and its impact upon solar salt production area in Cirebon, West Java, Indonesia

Abstract

High tide event has been acknowledged as a major cause of inundation in urban coastal area. This event is expected to increase in the future as an impact of global climate change. Meanwhile, there is still a gap of interest on tidal flood impact of marginal land use such as salt production with its traditional process. This study aims to identify high tide event in Cirebon waters and its impact on solar salt production area. Here we combine hydrodynamic simulation and Geographic Information System (GIS) within inputs from national seamless Digital Elevation Model (DEM) data from National Geospatial Agency, bathymetry, and wind record in May 2018 event. Additionally, this study also proposes coarse analysis of potential loss due to tidal flood event through productivity and pricing data from recent studies. From this research, it is found that 6, 570 ha (84%) of the salt production area has been inundated in that peak event with € 48.69 million of potential loss. This model exposes beneficial information for Indonesia salt sufficiency program as well as coastal disaster risk management.