ASSESSMENT OF MASS MOVEMENTS DRIVEN BY EXCEPTIONAL METEOROLOGICAL EVENTS THROUGHOUT THE USE OF DINSAR IN AUSTRIA

摘要

The main focus of this paper it′s to elaborate a cost effective strategy for SAR images processing in the aim of assess the Austrian mass movement cadastre through the use of open source software. A new method, aimed at verify the best compromise between statistical probability to detect movements on the ground, temporal and geometric decorrelation, attenuation of the electromagnetic wave by the atmosphere for DINSAR products, is proposed. A comparison of DINSAR displacement maps with GEORIOS (georisken ?sterreich) cadastre, geological, geomorphological and geotechnical available data were carried out. The ability to detect very slow deformation phenomena was positively assessed. However the possibility to associate precursory vertical displacements to on-going slope degradation processes requires a more detailed advanced DINSAR investigation.