Assessment of ground-based monitoring techniques applied to landslide investigations

Uhlemann, S.; Smith, Alister; Chambers, Jonathan; Dixon, Neil; Dijkstra, Tom; Haslam, Edward; Meldrum, Philip; Merritt, A.; Gunn, David; Mackay, Jonathan H.

doi:10.1016/j.geomorph.2015.10.027

Cited by 140 publications

(125 citation statements)

References 32 publications

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“…Furthermore, an EWS for a community should provide the following four key elements (UNEP 2012 Although numerous types of instrumentation and monitoring techniques are available (e.g. Stähli et al 2015;Uhlemann et al 2016;Smethurst et al 2017), they are currently not widely used for EWS in low-and middle-income countries due to their complexity and high cost. It is more common to use warning and forecasting approaches such as simple rainfall triggers to provide regional information (e.g.…”

Section: Introductionmentioning

confidence: 99%

An acoustic emission landslide early warning system for communities in low-income and middle-income countries

et al. 2018

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Early warning systems for slope instability are needed to alert users of accelerating slope deformation behaviour, enable evacuation of vulnerable people, and conduct timely repair and maintenance of critical infrastructure. Communities exposed to landslide risk in low-and middle-income countries seldom currently instrument and monitor slopes to provide a warning of instability because existing techniques are complex and prohibitively expensive. Research and field trials have demonstrated conclusively that acoustic emission (AE) monitoring can be an effective approach to detect accelerating slope movements and to subsequently communicate warnings to users. The objective of this study was to develop and assess a simple, robust, low-cost AE monitoring system to warn of incipient landslides, which can be widely deployed and operated by communities globally to help protect vulnerable people. This paper describes a novel AE measurement sensor that has been designed and developed with the cost constrained to a few hundred dollars (US). Results are presented from physical model experiments that demonstrate performance of the AE system in measuring accelerating deformation behaviour, with quantifiable relationships between AE and displacement rates. Exceedance of a pre-determined trigger level of AE can be used to communicate an alarm to users in order to alert them of a slope failure. Use of this EWS approach by communities worldwide would reduce the number of fatalities caused by landslides.

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Section: Introductionmentioning

confidence: 99%

An acoustic emission landslide early warning system for communities in low-income and middle-income countries

et al. 2018

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“…To acquire 20 complete information regarding landslide triggering factors and mechanisms, various combinations of monitoring techniques with instruments are usually employed (Dixon et al, 2015). However, pore-water pressure, displacement and deformation were mentioned as the crucial parameters for landslide monitoring and early warning in previous studies (Baroň and Supper, 2013;Uhlemann et al, 2016).…”

Section: Landslide Monitoring On Low Temporal Resolutionmentioning

confidence: 99%

“…Piezometer to monitor ground water have low temporal resolution, and monitoring methods based on low temporal resolution can be an effective solution to control the areas suspected of landslides (Uhlemann et al, 2016). In this study, we considered a landslide monitoring method with low temporal resolution to be limited to the analysis monitoring interval that a municipality can conduct with effective monitoring at low cost.…”

Section: Among the Ground-based Monitoring Techniques The Conventionmentioning

confidence: 99%

“…In fact, monitoring and warning systems can substitute for expensive stabilization works or engineering solutions to prevent loss from landslides wherever a large extent of area needs to be applied (Dai et al, 2002). Monitoring methods based on low temporal resolution instruments, such as a conventional inclinometer to 5 detect subsurface deformation and a piezometer to monitor pore water pressure, can be effective solutions (Uhlemann et al, 2016), and those methods can be useful for controlling multiple areas susceptible to landslides, where those areas are scattered among relatively numerous locations over a broad region. Nonetheless, a continuous monitoring example of landslide triggering parameters induced from rainfall is occasionally sought due to time and cost restrictions (Springman et al, 2013), and a few articles have addressed the time intervals for monitoring to control unstable slope hazards with risk-based analysis.…”

Section: Introduction 25mentioning

confidence: 99%

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Risk-based analysis of monitoring time intervals for landslide prevention

Lee

Kil

et al. 2017

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Abstract.Landslide is one of the most dangerous disasters in terms of occurrence frequency and damage severity that result in loss of human life and social infrastructure. Monitoring methods based on low temporal resolution instruments such as an inclinometer or piezometer can be an effective and cost-efficient solution. The objective of this research is to analyse monitoring time 15 intervals for low temporal resolution methods based on a risk study and to propose a plan for periodic landslide monitoring along with the different landslide hazard areas by considering the risk reduction effect. For this purpose, an equation for the probability of landslide occurrence was denoted by the concept of reliability, and the monitoring time interval was analysed quantitatively by calculating the average probability of landslide occurrence. To identity the frequency of landslide occurrence, a unit of relative temporal frequencies was adopted, and it was estimated by establishing rainfall threshold. As a case study 20 site, Pyeongchang County was selected, where landslide inventory data are available and an increase in population and infrastructure has been observed since Pyeongchang became the host city of the 2018 winter Olympic games. The result demonstrates that the appropriate monitoring intervals can be determined by calculating the average probability of landslide occurrence, and resources can then be allocated efficiently for landslide prevention.

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“…Similar approaches have been used to map the state of activity or hazard of a specific landslide [5,[11][12][13]; the novelty of this study resides in the long-term multitechnological monitoring of the landslide and on the particular location of the phenomenon that affects the expansion of a major touristic area listed in the UNESCO world heritage sites. Most of the time, literature focuses on the problems carried by anthropic pressure in developing countries, however, even in parts of Europe there is pressure to construct on landslides.…”

Section: Introductionmentioning

confidence: 99%

A Monitoring Network to Map and Assess Landslide Activity in a Highly Anthropized Area

et al. 2016

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Abstract:Mapping landslide activity in a highly anthropized area entails specific problems. The integration of different monitoring techniques in order to measure the displacements rate within the slope is mandatory. We describe our activity for the Mortisa landslide which is located on the western flank of the Cortina d'Ampezzo valley (northeastern Italy) in a highly anthropized area in the heart of the Dolomites, a UNESCO world heritage site. The mass movement threatens some houses, an important national road, and part of the area that will be the venue for the upcoming 2021 Alpine Skiing World Championship. The hazardous context along with its prestigious location makes the construction of new settlements and infrastructure very challenging. Owing to that, precise mapping and assessment of the activity of the Mortisa landslide is extremely important. To achieve this task, multitemporal aerial photo interpretation, A-DInSAR analysis, Global Navigation Satellite System (GNSS) surveys, and inclinometric measurements were performed. Through the integration of the monitoring data and geomorphological interpretation, a hazard map of the Mortisa area was produced with the intent to assist the local authorities in the definition of the new urban development plan.

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Assessment of ground-based monitoring techniques applied to landslide investigations

Cited by 140 publications

References 32 publications

An acoustic emission landslide early warning system for communities in low-income and middle-income countries

An acoustic emission landslide early warning system for communities in low-income and middle-income countries

Risk-based analysis of monitoring time intervals for landslide prevention

A Monitoring Network to Map and Assess Landslide Activity in a Highly Anthropized Area

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