The results of two survey methods, historical photogrammetry and geological photointerpretation, are compared, integrating the results, to evaluate the temporal evolution of a landslide in the Tuscan-Emilian Apennines (Italy). Historical aerial photos of the area, derived from photogrammetric surveys conducted in 1954 (scale 1:60000), in 1971 (scale 1:20000), and in 1976 (scale 1:17000) were available. A photogrammetric flight was further conducted in 2000, at a scale of 1:4400, with a traditional GPS ground survey support. First, the results of photographic analysis with the photointerpretation method are presented: the landslide is described from a geological point of view, showing its temporal evolution. To quantitatively assess the landslide movements, Digital Terrain Models were generated by means of an analytical plotter (DIGICART 40, Officine Galileo) and a Digital Photogrammetric Workstation (Helava System), with semi-automatic and automatic procedures. To generate these %
A. Zanutta, P. Baldi, G. Bitelli, M. Cardinali, A. Carrara (2006). Qualitative and quantitative photogrammetric techniques for multi-temporal landslide analysis. ANNALS OF GEOPHYSICS, 49, 1121-1134.
Qualitative and quantitative photogrammetric techniques for multi-temporal landslide analysis
ZANUTTA, ANTONIO;BALDI, PAOLO;BITELLI, GABRIELE;
2006
Abstract
The results of two survey methods, historical photogrammetry and geological photointerpretation, are compared, integrating the results, to evaluate the temporal evolution of a landslide in the Tuscan-Emilian Apennines (Italy). Historical aerial photos of the area, derived from photogrammetric surveys conducted in 1954 (scale 1:60000), in 1971 (scale 1:20000), and in 1976 (scale 1:17000) were available. A photogrammetric flight was further conducted in 2000, at a scale of 1:4400, with a traditional GPS ground survey support. First, the results of photographic analysis with the photointerpretation method are presented: the landslide is described from a geological point of view, showing its temporal evolution. To quantitatively assess the landslide movements, Digital Terrain Models were generated by means of an analytical plotter (DIGICART 40, Officine Galileo) and a Digital Photogrammetric Workstation (Helava System), with semi-automatic and automatic procedures. To generate these %I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
