Flooding Hazard Assessment Considering Climate Change in the Coastal Areas of Java / Indonesia Based on Remote Sensing and GIS Data

Abstract

Evaluations of different satellite data and meteorologic data as well as digital elevation data, help to identify critical areas in Java, Indonesia exposed to flooding due to flash floods, storm surge, cyclones, meteo-tsunamis or tsunami waves. Data mining and map creation is the prerequisite for flooding hazard preparedness for every community and for the strengthening of resilience. Case studies from the areas of Surabaya are presented to demonstrate an example how free available geoand satellite data can be used systematically for flooding hazard preparedness. Sea level rise due to climate change has to be considered and the flooding hazard preparedness adapted according to the actual and future situation. Evaluations of optical satellite data such as Landsat 8 and Sentinel 2 and radar data contribute to a better under-standing of the development of currents at the coast and their interactions with the coastal morphology.