Short-term geomorphological evolution of the Poggio Baldi landslide upper scarp via 3D change detection

Short-term geomorphological evolution of the Poggio Baldi landslide upper scarp via 3D change detection

On 19 March 2010, a 4 million m 3 landslide occurred at Poggio Baldi, a small village in the Santa Sofia municipality, central Apennines (Forlì-Cesena, Italy). The landslide caused severe damages to some homes and obstructed both the SS310 national road and the Bidente river. The Poggio Baldi landsl...

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Bibliographic Details
Published in:Landslides Vol. 18; no. 7; pp. 2367 - 2381
Main Authors: Mazzanti, Paolo, Caporossi, Paolo, Brunetti, Alessandro, Mohammadi, Francesco Ismail, Bozzano, Francesca
Format: Journal Article
Language:English
Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-07-2021
Springer Nature B.V
Subjects:
Agriculture
Change detection
Civil Engineering
Confined flow
Detection
Dimensional changes
Earth and Environmental Science
Earth Sciences
Escarpments
Evolution
Fluid flow
Geography
Geomorphology
Landslides
Lasers
Natural Hazards
Original Paper
Photogrammetry
Polls & surveys
Rock falls
Surveying
Surveys
Three dimensional analysis
Three dimensional models
Turbidites
Unmanned aerial vehicles
UAV photogrammetry
3D change detection
Poggio Baldi landslide
Terrestrial laser scanner
Rockfall mapping
Volume estimation
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Summary:On 19 March 2010, a 4 million m 3 landslide occurred at Poggio Baldi, a small village in the Santa Sofia municipality, central Apennines (Forlì-Cesena, Italy). The landslide caused severe damages to some homes and obstructed both the SS310 national road and the Bidente river. The Poggio Baldi landslide arose in the “Marnoso-Arenacea Romagnola” formation composed of a pelitic-arenaceous turbiditic sequence. The landslide was classified as a rotational landslide, evolving into a partially confined flow-like landslide and causing the reactivation of the deposit of a previous landslide that took place in 1914. This paper reports a study of the phenomena currently occurring on the 100-m high main scarp of this landslide complex. The aim of the study was to assess ground changes that occurred on the upper scarp from 2015 to 2018 and to infer a preliminary evolutionary model capable of supporting short-term landslide scenarios. For this purpose, multi-station terrestrial laser scanner surveys were performed in 2015, 2016, 2017, and 2018. Additionally, an unmanned aerial vehicle three-dimensional photogrammetric survey was carried out in 2016. Analyses of the three-dimensional digital models of the main scarp made it possible to carry out several exhaustive multi-temporal investigations and to derive a detailed three-dimensional change detection scheme for it. The results showed an active geomorphological evolution of the rock scarp area due to frequent rockfalls and topples (of the order of a few m 3 ), with significant local volume changes (a few thousand m 3 /year) and with potential implications for the long-term evolution of the entire slope.
ISSN:1612-510X
1612-5118
DOI:10.1007/s10346-021-01647-z