Change detection in floodable areas of the Danube delta using radar images

In the wetlands of the Danube delta floodplain, flooding is a major natural risk. The coastal wetlands have been seriously impacted by floods in 2002, 2005, 2006 and 2010. Using hydrological and satellite observations acquired in 2009 and during the summer of 2010, this paper tackles the issue of forecasting risk based on land cover information and observations. A major objective of this methodological work consists in exploring several types of data from the Japanese ALOS satellite. These data are used to illustrate a multi-temporal radar data processing methodology based on temporal entropy analysis that enables change detection in the floodable areas of the Danube delta.