Multi-method investigation of mass transfer mechanisms in a retrogressive clayey landslide (Harmalière, French Alps)

Fiolleau, Sylvain; Jongmans, Denis; Bièvre, Grégory; Chambon, Guillaume; Lacroix, Pascal; Helmstetter, Agnès; Wathelet, Marc; Demierre, Michel

doi:10.1007/s10346-021-01639-z

Cited by 12 publications

(14 citation statements)

References 54 publications

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“…The central body of the landslide is moving at velocities ranging from cm/year to m/year, with possible dramatic acceleration phases (m/day). A variety of research subjects are currently investigated in connection with it [46,47].…”

Section: Experimental Site: Harmalière Landslidementioning

confidence: 99%

2D Phase-Based RFID Localization for On-Site Landslide Monitoring

Charléty

Breton²,

Larose

et al. 2022

Remote Sensing

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Passive radio-frequency identification (RFID) was recently used to monitor landslide displacement at a high spatio-temporal resolution but only measured 1D displacement. This study demonstrates the tracking of 2D displacements, using an array of antennas connected to an RFID interrogator. Ten tags were deployed on a landslide for 12 months and 2D relative localization was performed using a phase-of-arrival approach. A period of landslide activity was monitored through RFID and displacements were confirmed by reference measurements. The tags showed displacements of up to 1.2 m over the monitored period. The centimeter-scale accuracy of the technique was confirmed experimentally and theoretically for horizontal localization by developing a measurement model that included antenna and tag positions, as well as multipath interference. This study confirms that 2D landslide displacement tracking with RFID is feasible at relatively low instrumental and maintenance cost.

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Section: Experimental Site: Harmalière Landslidementioning

confidence: 99%

2D Phase-Based RFID Localization for On-Site Landslide Monitoring

Charléty

Breton²,

Larose

et al. 2022

Remote Sensing

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Section: Experimental Site: Harmalière Landslidementioning

confidence: 99%

2d Phase-Based RFID Localization for On-Site Landslide Monitoring

Charléty¹,

Larose²,

Breton³

et al. 2022

SSRN Journal

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“…Landslide characterization is commonly performed using geotechnical methods such as cone penetration tests (Solberg et al, 2016), and/or geophysical methods like electrical resistivity tomography (Solberg et al, 2016) or seismic (Bièvre et al, 2016;Uhlemann et al, 2016a). Monitoring of landslide dynamics is done using geotechnical approaches such as inclinometric measurements (Furuya et al, 1999;Jeng et al, 2017;Uhlemann et al, 2016b), remote sensing solutions (Benoit et al, 2015;Carlà et al, 2019;Fiolleau et al, 2021;Lacroix et al, 2018), or geophysical techniques (Fiolleau et al, 2020;Jongmans et al, 2021;Whiteley et al, 2019).…”

Section: ) Introductionmentioning

confidence: 99%

“…All the above-mentioned studies show that characterizing landslide mechanisms and reactivations requires a combination of techniques. To date, some studies have combined methods to understand these mechanisms (Fiolleau et al, 2021;Uhlemann et al, 2016b), but none has simultaneously tracked seismic velocity changes, soil deformation, and temperature variations at multiple depths. This combination of methods could enable major advances in understanding changes in soil properties, water infiltration patterns, and their influence on reactivation mechanisms.…”

Section: ) Introductionmentioning

confidence: 99%

Understanding Slow-moving Landslide Triggering Processes Using Low-cost Passive Seismic and Inclinometer Monitoring

Fiolleau¹,

Dafflon²,

Wielandt³

et al. 2022

Preprint

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Landslides are a major natural hazard, threatening communities and infrastructures worldwide. Mitigation of these hazards relies on understanding their causes and triggering processes, which critically depend on subsurface characteristics and their variations over time. In this study, we present a novel approach combining passive seismic and low-cost inclinometer monitoring methods to improve the understanding of landslide activation mechanisms and their controls. We evaluate the efficiency of this approach on a shallow, slow-moving landslide directly endangering a road bridge, a bridge that is part of an important emergency response route. Results show the value of combining the two approaches for observing and monitoring landslide hazards. Passive seismic monitoring captures the variation in soil properties (rigidity and density) over time by sensing the variations of the seismic wave velocity (dV/V and its associated correlation coefficient). At the same time, novel low-cost inclinometers are monitoring subsurface deformation (from millimetric to pluricentimetric scale) and temperature. Seismic precursors detected at the bottom sensor a few hours prior to the reactivation are followed by the reactivation of the landslide toe, releasing stresses in the top part that lead to the reactivation of the whole landslide. This reactivation occurs during an episode of heavy rainfall following a 7-month drought. Meanwhile, temperature monitoring enables us to track water infiltration and to highlight its role in the landslide mechanisms. Overall, the combination of the two monitoring methods shows promise for quantifying the sliding mechanisms of landslide reactivations and for designing landslide early warning systems.

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Multi-method investigation of mass transfer mechanisms in a retrogressive clayey landslide (Harmalière, French Alps)

Cited by 12 publications

References 54 publications

2D Phase-Based RFID Localization for On-Site Landslide Monitoring

2D Phase-Based RFID Localization for On-Site Landslide Monitoring

2d Phase-Based RFID Localization for On-Site Landslide Monitoring

Understanding Slow-moving Landslide Triggering Processes Using Low-cost Passive Seismic and Inclinometer Monitoring

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