Application of Ambient Vibration Techniques for Monitoring the Triggering of Rapid Landslides

Structural Characterization of a Toppling Rock Slab From Array‐Based Ambient Vibration Measurements and Numerical Modal Analysis

“…Advantages of this technique include non‐invasive, surface‐based sensor deployment, short‐term data acquisition, and rapid analysis of spectral attributes. Meanwhile, advancements in seismometer technology and the increasing availability of low‐cost instruments (Anthony et al., 2019; Ward & Lin, 2017) have improved the viability of ambient vibration measurements for rock slope instability characterization and monitoring across a range of settings (Bottelin et al., 2021; Colombero et al., 2021; Jongmans et al., 2015).…”

“…in seismometer technology and the increasing availability of low-cost instruments (Anthony et al, 2019;Ward & Lin, 2017) have improved the viability of ambient vibration measurements for rock slope instability characterization and monitoring across a range of settings (Bottelin et al, 2021;Colombero et al, 2021;Jongmans et al, 2015).…”

Field measurements, laboratory tests and empirical relations for investigating the solid-to-fluid transition of a rapid earthflow

“…Many researchers believe that the ability of earthflows to surge and rapidly accelerate is a consequence of excess pore-water pressures generated along shear surfaces [Keefer and Johnson, 1983;Baum et al, 2003;van Asch and Malet, 2009]. Others point out that such a behavior indicates a sudden change in the mechanical properties of the material, like a loss of shear stiffness or an increase of water content [Picarelli et al, 2005;Pastor et al, 2009;Pastor et al, 2010;Jongmans et al, 2015]. Although these factors are not mutually exclusive (an earthflow could be triggered by an increase of pore-water pressures and subsequently undergo a change in mechanical properties as the movement continues) their relative importance is still poorly understood.…”

Variation in Rayleigh wave ellipticity as a possible indicator of earthflow mobility: a case study of Sobradinho landslide compared with pile load testing

“…Landslides involving sudden mobility of earthflows have been associated with two mutually inclusive mechanisms: (i) excess pore-water pressures generated along shear plane (Baum et al, 2003;van Asch and Malet, 2009;Hussain et al, 2019b) and (ii) loss of shear strength because of the increased degree of saturation (Pastor et al, 2010;Jongmans et al, 2015;Hamza and Bellis, 2008;Zhou et al, 2013Zhou et al, , 2016. Accordingly, the mechanical behavior of the earthflows is considered a grouping of Coulomb plastic solids where the mobility is associated with distributed internal shearing that causes flow-like appearance instead of mass liquefaction (Hungr et al, 2001).…”