Summary
A long-term project for a landslide inventory has been initiated in Calabria, where slope instability constitutes a major geological hazard. This project that involves the building up of a computer-based data bank of slope instability phenomena, has been tested in two zones characterized by different geological and geomorphological conditions. Univariate and multivariate statistical analysis indicates that landslide morphometric and typologic attributes are highly dependent on the geologic and geomorphic features of the area where slope failure occurs. Moreover, although most of the morphometric attributes of landslides affecting these two zones differ significantly, their relationships expressed in terms of correlation coefficients show an overall similarity. Lastly, a linear combination of these attributes can discriminate most of the landslides occurring in these two investigated areas.
Résumé
Le projet d’inventorier les glissements de terrain a été mis en œuvre en Calabre, où l’instabilité des versants représente le plus grand danger géologique. Ce projet, qui comporte la création d’une banque de données computerisées sur les phénomènes d’instabilité des versants, a été experimenté en deux zones caracterisées par differents conditions géologiques et géomorphologiques. L’analyse statistique d’univariance et multivariance démontre que les attributs morphométriques et typologiques des glissements de terrain dépendent fortement des caractères géologiques et morphologiques de la surface où se produisent les glissements de terrain. En outre, bien que la plupart des attributs morphométriques des glissements de terrain concernant ces deux zones se différencient significativement, leurs parentés exprimées en termes des coefficients de corrélation démontre partout une similitude générale. Enfin une combinaison linéaire de ces attributs peuvent discriminer la plupart des glissements de terrain présents dans ces deux zones étudiées.
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Consiglio Nazionale delle Ricerche—Istituto di Ricerca per la Protezione Idrogeologica, Cosenza, CNR-IRPI-87030 Castiglione Scalo (Cosenza)
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Carrara, A., Catalano, E., Sorriso Valvo, M. et al. Landslide morphometry and typology in two zones, Calabria, Italy. Bulletin of the International Association of Engineering Geology 16, 8–13 (1977). https://doi.org/10.1007/BF02591433
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DOI: https://doi.org/10.1007/BF02591433