1,721,008 research outputs found
Underground cosmic ray measurement for morphological reconstruction of the 'Grotta Gigante' natural cave.
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Lake Sebino (Lombardia): morphometry and geological setting through multibeam batymetry and high resulution seismic profiles.
No full textLandslide monitoring and characterization using multi-temporal helicopter-borne Lidar surveys: a successful application in the Northern Apennines
No full textUse of multitemporal airborne lidar surveys to analyse post-failure behaviour of earth slides
No full textTwo helicopter-borne LiDAR surveys were conducted in August 2004 and May 2005 on a 2 km2earth flow that was totally reactivated in late winter 2004. Shaded view maps and differentialanalysis of terrain models from the two surveys allowed residual movements, as well as ruptureand accumulation features over the slope, to be assessed and mapped for the period between 2004and 2005. In particular, it has been made evident that residual movements involved about 20% ofthe whole landslide area. Retrogression of the crown zones, with a depletion estimated in theorder of maximum 20 m, was coupled with a more than 10 m advancement of the deeptranslational slide affecting earth and rock materials in the source area, that resulted in anapparent uplift of more than 15 m. Down slope, the upper accumulation lobe sector was loweredby about 10 m due to depletion and also by the progressive decrease in water content.This analysis proved the usefulness of LiDAR surveys for analysing post-failure behaviour ofthis type of mass movements
Deep Water Deposits From Ciros –1 Drillhole, McMurdo Sound, and Implications for Ross Sea Late Eocene-Early Oligocene Palaegeography (Western Ross Sea, Antarctica)
No full textIntegrating LIDAR intensity measures and hyperspectral data for extracting of cultural heritage
No full textThis paper deals with the integration of LIDaR and hyperspectral data to improve the discovery of new archeological sites. We
investigate the possibility of integrating such dataset in order to evaluate irregular behavior of some major ground indexes. While
hyperspectral data allow the identification of specific humidity, vegetation and thermal conditions in the target area, accurate
geometric information are provided by LIDaR data. In fact, accurate filtering of lasers canning data allows the computation of accurate DTM (Digital Terrain Model), while Lambertian-based calibration of LIDaR intensity enhances the automatic data segmentation and, in this way, the detection of possible sites of interest. So far as hyperspectral data, MIVIS and AISA sensor data were used. In order to fully extract spectral information from these, some specific procedure have been driven, also implementing PCA analysis. Such data processing have been performed using a wellknown commercial software (ENVI® by RSI) on data acquired over the city of Aquileia (UD, North-East of Italy), an area of great historical interest due to many first century B.C. units of roman ruins. Significant results where obtained both in already discovered archaeological sites, and in interesting new areas on the northern side of the old city. When integrated, the resulting datasets showed, with sensible accuracy, the presence of surface/below surface archaeological heritage
Use of multitemporal airborne LiDAR surveys to analyse post-failure behaviour of earthslides
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