Disaster Risk Reduction and Facility Management by High-Quality Ground Surface Observation

In situation where large-scale disasters frequently occur due to heavy rains caused by recent climate change and huge earthquakes, Disasters cause huge losses in terms of human lives and damage to public facilities, lifelines, and private properties. Scientific approach covers wide variety fields for risks hedge, and there is an urgent need to elucidate the mechanisms associated with slope failures through wide-area and high-density observations, and to develop predictive forecasting technology.

One of the important elements of this effort is wide-area and high-density surface deformation analysis using SqueeSAR®. Continental-wide or Nation-wide observations are already being carried out at UE and in Japan, and are being used to evaluate landslide activity, administrate public facilities, and assess the effects of earthquakes. In this paper, we clarify the analysis results of SAR images with different wavelengths and the characteristics of analysis based on the temporal resolution of observations and discuss the usefulness and utilization of future satellite launch plans.