Ground‐based monitoring of high‐risk landslides through joint use of laser scanner and interferometric radar

Teza, Giordano; Atzeni, C.; Balzani, Marcello; Galgaro, Antonio; Galvani, Guido; Genevois, R.; Luzi, G.; Mecatti, D.; Noferini, L.; Pieraccini, Massimiliano; Silvano, S.; Uccelli, F.; Zaltron, Nicola

doi:10.1080/01431160801942227

Cited by 12 publications

(14 citation statements)

References 13 publications

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“…In both cases, the potential capacity of the instruments is optimized (Lichti and Jamtsho, 2006;Teza et al, 2008a). In geological applications, laser scanner data are typically used to evaluate the geometry and kinematics of unstable masses (Teza et al, 2007(Teza et al, , 2008bOppikofer et al, 2009a,b), including volume calculations, or also to carry out remote geomechanical evaluations (Slob et al, 2005).…”

Section: Terrestrial and Airborne Laser Scanningmentioning

confidence: 99%

Laser scanning-based recognition of rotational movements on a deep seated gravitational instability: The Cinque Torri case (North-Eastern Italian Alps)

et al. 2010

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Section: Terrestrial and Airborne Laser Scanningmentioning

confidence: 99%

Laser scanning-based recognition of rotational movements on a deep seated gravitational instability: The Cinque Torri case (North-Eastern Italian Alps)

et al. 2010

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“…It should be mentioned that other techniques such as ground-based synthetic aperture radar (GB-SAR), are also being widely used for the detection of sub-centimetric deformation across million cubic metre mass movements, large quarries and excavations (Antonello et al, 2004;Corsini et al, 2006;Noferini et al, 2007). The combined use of TLS and GB-SAR techniques providing subcentimetric deformation is discussed in Teza et al (2008), showing that the fine resolution of deformation detected by GB-SAR, in conjunction with high resolution of the slope topography obtained by TLS, may help understand actively deforming rock slopes more comprehensively. Yet the weaknesses of GB-SAR are the loss of coherence in the radar wavelength in the case of rapid changes between survey epochs (e.g.…”

Section: Benefits and Limitations Of The Techniquementioning

confidence: 99%

“…Yet the weaknesses of GB-SAR are the loss of coherence in the radar wavelength in the case of rapid changes between survey epochs (e.g. rockfalls), a more complex set-up compared with TLS and a significantly lower spatial resolution, usually ranging from 1 to 100 square metres (Tarchi et al, 2005;Corsini et al, 2006;Teza et al, 2008;Derron et al, 2011).…”

Section: Benefits and Limitations Of The Techniquementioning

confidence: 99%

“…The combined use of TLS and GB‐SAR techniques providing subcentimetric deformation is discussed in Teza et al . (), showing that the fine resolution of deformation detected by GB‐SAR, in conjunction with high resolution of the slope topography obtained by TLS, may help understand actively deforming rock slopes more comprehensively. Yet the weaknesses of GB‐SAR are the loss of coherence in the radar wavelength in the case of rapid changes between survey epochs (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Terrestrial laser scanning of rock slope instabilities

Abellán

Oppikofer

Jaboyedoff

et al. 2013

Earth Surf Processes Landf

287

176

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This manuscript presents a review on the application of a remote sensing technique (terrestrial laser scanning, TLS) to a well-known topic (rock slope characterization and monitoring). Although the number of publications on the use of TLS in rock slope studies has rapidly increased in the last 5-10 years, little effort has been made to review the key developments, establish a code of best practice and unify future research approaches. The acquisition of dense 3D terrain information with high accuracy, high data acquisition speed and increasingly efficient post-processing workflows is helping to better quantify key parameters of rock slope instabilities across spatial and temporal scales ranging from cubic decimetres to millions of cubic metres and from hours to years, respectively. Key insights into the use of TLS in rock slope investigations include: (a) the capability of remotely obtaining the orientation of slope discontinuities, which constitutes a great step forward in rock mechanics; (b) the possibility to monitor rock slopes which allows not only the accurate quantification of rockfall rates across wide areas but also the spatio-temporal modelling of rock slope deformation with an unprecedented level of detail. Studying rock slopes using TLS presents a series of key challenges, from accounting for the fractal character of rock surface to detecting the precursory deformation that may help in the future prediction of rock failures. Further investigation on the development of new algorithms for point cloud filtering, segmentation, feature extraction, deformation tracking and change detection will significantly improve our understanding on how rock slopes behave and evolve. Perspectives include the use of new 3D sensing devices and the adaptation of techniques and methods recently developed in other disciplines as robotics and 3D computer-vision to rock slope instabilities research.

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“…A promising technique is ground-based InSAR (GBSAR) (Monserrat et al 2014), which could allow high precisions in the detection of movements along the LOS (Teza et al 2007(Teza et al , 2008; Luzi et al 2006;Lingua et al 2008;Bozzano et al 2011). GBSAR, however, presents some limiting factors:…”

Section: Introductionmentioning

confidence: 99%

Multi-temporal Terrestrial Laser Scanning Survey of a Landslide

Barbarella

Fiani

Lugli

2015

Modern Technologies for Landslide Monitoring and Prediction

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Terrestrial laser scanning (TLS) has proven to be a very effective technique for landslides monitoring, even if some critical issues exist for providing highly reliable results. This chapter presents the methodology adopted in performing four surveys, carried out over three years on a large slump landslide in order to get effectively comparable data. The first problem concerns the setting up of the reference system, which has been realized by means of global navigation satellite system permanent stations ETRF00 datum. This solution was able to maximize the stability over time even at the expense of a slightly lower precision, which was, however, in the order of 1-2 cm with data recorded during the whole duration of TLS survey. An assessment of geo-referencing accuracy was carried out with respect to the only stable artifact present in the landslide area. This check pointed out that in the central part of the point cloud the repeatability between different surveys was slightly greater than 5 cm. To ensure the quality of the obtained multitemporal digital terrain models (DTM's) over the entire region of interest, the choice of the interpolation algorithm has been performed and verified with a cross-validation method on the basis of a sample extracted from the data set. To detect the kinematics of the landslide in its several parts, both the DTM's and profiles have been used, which have proven to be particularly useful for the interpretation of details. After the localization of various landslide bodies (keeping into account slope and aspect maps derived from the DTM), the evaluation of the volumes mobilized over time has been carried out by

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Ground‐based monitoring of high‐risk landslides through joint use of laser scanner and interferometric radar

Cited by 12 publications

References 13 publications

Laser scanning-based recognition of rotational movements on a deep seated gravitational instability: The Cinque Torri case (North-Eastern Italian Alps)

Laser scanning-based recognition of rotational movements on a deep seated gravitational instability: The Cinque Torri case (North-Eastern Italian Alps)

Terrestrial laser scanning of rock slope instabilities

Multi-temporal Terrestrial Laser Scanning Survey of a Landslide

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