Developing a User-Friendly Tsunami Risk Assessment Tool for Ports: Application to Cilegon Port, Indonesia

More than 80% of the world’s international trade is conducted via maritime transport, with ports serving as critical gateways for the transfer of goods between sea and land. In this research, we introduce a user-friendly tsunami risk analysis application for ports, developed with a graphical user interface. The application utilises existing published fragility curves (for structural damage, recovery potential for production capacity, and physical loss estimation) to perform the analyses and generate a risk report. The required inputs in this application are a tsunami inundation map and a shapefile containing the polygonal structures of the port, with an attribute table that includes the industry type identification. The main output of the application is a PDF report containing the probability distribution results across different tsunami inundation depth ranges, presented through inundation maps, summary tables, and bar plots. All raw image files used in the report, as well as the raw calculations in CSV format, are also included as part of the output. Preliminary testing of the application has been conducted to forecast tsunami impacts at Cilegon Port in West Java, Indonesia, under a worst-case scenario involving a Mw 8.9 earthquake from a rupture along the Sunda Megathrust, located southwest of the Sunda Strait. Cilegon Port lies on the north-western coast of Java Island, facing the strait. We will present the latest progress in developing our risk assessment application. This research is funded by The European Commission (the Horizon Europe scheme) and the UK Research and Innovation (EPSRC contract: EP/Z001080/1).