Polemio M.; Petrucci O., 2001, Hydrogeological monitoring and image analysis of a mudslide in Southern Italy, Physics and chemistry of the earth. Part C_ Solar-terrestrial and planetary science 9 (2001): 689–695. doi_10.1016/S1464-1917(01)00068-X,
URL: http://www.cnr.it/prodotto/i/67051

This paper describes a methodological example of a data-integration procedure to improve the knowledge of landslide hazard related to a seismic area in the southern Apennine (Italy). Attention is focused on remote sensing data. The analysis is validated using detailed topographical, geophysical, geotechnical and hydrogeological data as ground truth. The investigated phenomenon, which started at the end of 1993, is an earthflow. The presented methodology recommends the combined use of DEM, multi-temporal panchromatic visible aerial photographs and thermal infrared images. The integration between these data and multidisciplinary monitoring data proved useful. The main hydrogeological pattern, the geological and geomorphological framework and the areas of latent instability can be clearly determined. Insight can be gained through the synoptic slope view in the relative short time needed to cany out the analysis. The proposed approach can be regarded as a useful contribution to the evaluation of landslide hazard, particularly during emergency periods. 0 2001 Elsevier Science Ltd. All rights reserved the 1980 earthquake. Interdisciplinary investigations and monitoring 'were carried out between 1994 and 1996, within an EC funded research project (EC, 1996) and partially continued by Authors. This area has been chosen as a case study owing both to the landslide dimensions, which are large enough to allow remote sensing, and the wealth of available data. The selection of the most suitable kind of data - mainly remotely sensed - and the proposal of the most appropriate processing is aimed at improving landslide knowledge. The availability of field data ensures the validation of the proposed work. The combined analysis of DEM, panchromatic visible aerial photographs and thermal infrared images has been carried out aiming to perform a study approach able to provide a multi-temporal and multi-spectral analysis of slope instability phenomena. This framework has then been merged to data coming from multidisciplinary monitoring of study area in order to both verify the results of image analysis and test the proposed methodology.

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