Kinematics of a landslide derived from archival photogrammetry and GPS data |
| |
Authors: | P Baldi N Cenni M Fabris A Zanutta |
| |
Institution: | aDipartimento di Fisica, University of Bologna, V.le C.B. Pichat, 8, 40127 Bologna, Italy;bDipartimento di Ingegneria delle Strutture, dei Trasporti, delle Acque, del Rilevamento, del Territorio (DISTART), University of Bologna, V.le Risorgimento 2, 40135, Bologna, Italy |
| |
Abstract: | The evolution of the Patigno landslide, a deep-seated gravitational slope deformation in the Northern Apennine range (Italy), was investigated using archival photogrammetry, and GPS observations from a permanent station located inside the landslide. Historical aerial photographs of the area taken in 1975 (scale 1:13,000), 1987 (1:13,000) and 2004 (1:30,000) were co-registered into the same reference frame using an unconventional method based on the detection of homologous points in multi-temporal models. Three DTMs were produced using a Digital Photogrammetric Workstation and compared. The displacement vectors of 293 points in the landslide were determined. The average movement velocity of the GPS station since 2004 (about 3.5 cm yr− 1) agrees with the mean displacement rate obtained from photogrammetry. Furthermore, the estimated velocity varies seasonally between 3 and 6 cm yr− 1. This variability correlated with rainfall suggests that the creep of the landslide is influenced by hydrological factors. |
| |
Keywords: | Landslide GPS time series Archival photogrammetric technique Creep movement |
本文献已被 ScienceDirect 等数据库收录! |
|