Use of terrestrial laser scanning for the characterization of retrogressive landslides in sensitive clay and rotational landslides in river banks

Jaboyedoff, Michel; Demers, Denis; Locat, Jacques; Locat, Ariane; Locat, Pascal; Oppikofer, Thierry; Robitaille, Denis; Turmel, Dominique

doi:10.1139/t09-073

Cited by 91 publications

(40 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The wavelength ranges between 500 and 1,700 nm (Wehr and Lohr 1999;Jaboyedoff et al 2009a). For TLS, the acquisition range increases usually with longer wavelengths, from a few metres to 2,000 m if reflectivity of the surface is high (Jaboyedoff et al 2009a).…”

Section: Accuracy Resolution and Point Densitymentioning

confidence: 99%

“…For TLS, the acquisition range increases usually with longer wavelengths, from a few metres to 2,000 m if reflectivity of the surface is high (Jaboyedoff et al 2009a). …”

Section: Accuracy Resolution and Point Densitymentioning

confidence: 99%

“…Jaboyedoff et al (2009a) shows a case study of circular landslides in silty sediments in river banks.…”

Section: Tlsmentioning

confidence: 99%

“…InSAR techniques are mainly dedicated to the detection and the quantification of small displacements over large areas. LIDAR (or laser scanning) provide high-resolution point clouds of the topography and has several applications that range from mapping (Ardizzone et al 2007;Jaboyedoff et al 2008a) to monitoring deformation (Gordon et al 2001), landslides or rockfall displacements (Teza et al 2007;Oppikofer et al 2008;Abellan et al 2010) to landslide in soils (Jaboyedoff et al 2009a). The joint use of terrestrial laser scanning (TLS) and SAR techniques may help to understand landslide phenomena, as is discussed in Teza et al (2008).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Use of LIDAR in landslide investigations: a review

et al. 2010

Self Cite

View full text Add to dashboard Cite

This paper presents a short history of the appraisal of laser scanner technologies in geosciences used for imaging relief by high-resolution digital elevation models (HRDEMs) or 3D models. A general overview of light detection and ranging (LIDAR) techniques applied to landslides is given, followed by a review of different applications of LIDAR for landslide, rockfall and debris-flow. These applications are classified as: (1) Detection and characterization of mass movements; (2) Hazard assessment and susceptibility mapping; (3) Modelling; (4) Monitoring. This review emphasizes how LIDARderived HRDEMs can be used to investigate any type of landslides. It is clear that such HRDEMs are not yet a common tool for landslides investigations, but this technique has opened new domains of applications that still have to be developed.

show abstract

Section: Accuracy Resolution and Point Densitymentioning

confidence: 99%

“…For TLS, the acquisition range increases usually with longer wavelengths, from a few metres to 2,000 m if reflectivity of the surface is high (Jaboyedoff et al 2009a). …”

Section: Accuracy Resolution and Point Densitymentioning

confidence: 99%

“…Jaboyedoff et al (2009a) shows a case study of circular landslides in silty sediments in river banks.…”

Section: Tlsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Use of LIDAR in landslide investigations: a review

et al. 2010

Self Cite

View full text Add to dashboard Cite

show abstract

“…Monitoring of ground movement over larger areas can be accomplished using aerial reconnaissance and LIDAR and is done regularly by asset owners such as Network Rail in the UK [13] but these surveys provide topographical information only [14] and therefore are not currently capable of capturing potentially rapid changes in subsurface conditions preceding slope failure.…”

Section: Monitoringmentioning

confidence: 99%

Challenges in monitoring and managing engineered slopes in a changing climate

et al. 2016

View full text Add to dashboard Cite

Abstract. Geotechnical asset owners need to know which parts of their asset network are vulnerable to climate change induced failure in order to optimise future investment. Protecting these vulnerable slopes requires monitoring systems capable of identifying and alerting to asset operators changes in the internal conditions that precede failure. Current monitoring systems are heavily reliant on point sensors which can be difficult to interpret across slope scale. This paper presents challenges to producing such a system and research being carried out to address some of these using electrical resistance tomography (ERT). Experimental results show that whilst it is possible to measure soil water content indirectly via resistivity the relationship between resistivity and water content will change over time for a given slope. If geotechnical parameters such as pore water pressure are to be estimated using this method then ERT systems will require integrating with more conventional geotechnical instrumentation to ensure correct representative information is provided. The paper also presents examples of how such data can be processed and communicated to asset owners for the purposes of asset management.

show abstract

Mapping Coastal Erosion of a Mediterranean Cliff with a Boat‐Borne Laser Scanner: Performance, Processing, and Cliff Erosion Rate

Giuliano

Dewez

Lebourg

et al. 2022

3D Digital Geological Models

View full text Add to dashboard Cite

Terrestrial laser scanners (TLS) are well known for providing an efficient means to monitor coastal cliff erosion. Cliffs along micro-tidal coasts, however, have often escaped quantification because the narrow or absent coastal platforms do not offer stable and embracing vantage points. To circumvent this issue, mobile laser scanning surveys from a boat can be used. We present a case study from Provence-Alpes-Côte-d'Azur (Mediterranean coastsouthern France) to quantify cliff erosion in such micro-tidal environments. Three surveys were sub-contracted over a period of 17 months to monitor a 3.5-km-long cliff of Carry-le-Rouet (15km west of Marseille). Data quality was check independently using man-made planar walls positioned above the cliff face, to retrieve survey precision and change detection thresholds.Boat-borne mobile lidar system was capable of describing planar features with a precision of 3-4 cm (epoch 1 and 2) and improved to 2.6 cm (epoch 3) with point densities around 100 pts/m². Absolute positioning accuracy varied between 0.1 cm and 0.3 cm. Because the coastline is very sinuous, we describe a method to unfold the point clouds using a continuous analytical surface made of vertical planes joined by arcs of cylinders and perform the analysis in 2.5D.Change was detected using a unique, conservative, threshold of 14 cm (99% quantile estimated on plane change) on grids of 10 x 10 cm pixels. Integrated over the entire cliff face, the average annual cliff recession rate at Carry-le-Rouet is 1.1cm/year. In 17 months, erosion was three times more effective in sandstone and marls layers than in calcarenites and conglomerates.Erosion varies vertically with erosion three times more effective in the lower 25 m of the cliffs than above. Despite imperfections, boat-borne laser scanning system are capable of delivering meaningful erosion data even in this low erosion context.

show abstract

Use of terrestrial laser scanning for the characterization of retrogressive landslides in sensitive clay and rotational landslides in river banks

Cited by 91 publications

References 14 publications

Use of LIDAR in landslide investigations: a review

Use of LIDAR in landslide investigations: a review

Challenges in monitoring and managing engineered slopes in a changing climate

Mapping Coastal Erosion of a Mediterranean Cliff with a Boat‐Borne Laser Scanner: Performance, Processing, and Cliff Erosion Rate

Contact Info

Product

Resources

About