Introduction

Scaioni, Marco

doi:10.1007/978-3-662-45931-7_1

Cited by 4 publications

(4 citation statements)

References 18 publications

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“…Implementing mitigation and stabilization measures is often challenging due to their typical rheological and mechanical behaviors and their complex kinematics [9]. In this context, investigation and monitoring activities play a pivotal role in designing effective mitigation strategies and, consequently, in sustainable risk management [10][11][12]. Despite this, only a few works in the literature focused on the critical evaluation of both conventional and innovative techniques for earth flow monitoring.…”

Section: Introductionmentioning

confidence: 99%

The Contribution of Digital Image Correlation for the Knowledge, Control and Emergency Monitoring of Earth Flows

Mazza,

Romeo,

Cosentino

et al. 2023

Geosciences

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Earth flows are complex geological processes that, when interacting with linear infrastructures, have the potential to cause significant damage. Consequently, conducting comprehensive investigations and continuous monitoring are becoming paramount in designing effective mitigation measures and ensuring sustainable risk management practices. The use of digital image correlation (DIC) algorithms for the displacement monitoring of earth flows is a relatively new and growing field with a limited number of dedicated works in the literature. Within this framework, the present paper contributes by evaluating DIC techniques at several earth flow sites. These assessments were founded upon data obtained from both low-cost and multi-platform sensors, used to assess the displacement field, pinpointing the most active sectors, and gauging their rates of movement during different kinematic phases. In this regard, the highest localized movement velocities reached in the Pietrafitta (0.01 m/day) and Grillo (0.63 m/day) earth flows experience different ongoing kinematic processes. The versatility of these techniques is notable, manifesting in the ease of installation, cost-effectiveness, and adaptability to various platforms. The proven reliability in terms of maximum accuracy (1 pixel) and sensitivity (0.05 m) lays the foundation for the extensive use of the presented techniques. The amalgamation of these attributes positions DIC techniques as competitive, adaptable, and readily deployable tools in earth flow studies.

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Section: Introductionmentioning

confidence: 99%

The Contribution of Digital Image Correlation for the Knowledge, Control and Emergency Monitoring of Earth Flows

Mazza,

Romeo,

Cosentino

et al. 2023

Geosciences

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“…Many landslides were activated in Croatia caused by those processes and resulted in significant material damage [ 5 ]. Landslide monitoring can provide vital information for preventing or reducing potential great dangers that landslides cause [ 6 ]. As a good example of a landslide monitoring system, a continuous real-time monitoring system installed on landslide Kostanjek, located in the city of Zagreb in Croatia, can be highlighted.…”

Section: Introductionmentioning

confidence: 99%

Accuracy Analysis of a New Data Processing Method for Landslide Monitoring Based on Unmanned Aerial System Photogrammetry

Jakopec

Marendić

Grgac³

2023

Sensors

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One of the most commonly used surveying techniques for landslide monitoring is a photogrammetric survey using an Unmanned Aerial System (UAS), where landslide displacements can be determined by comparing dense point clouds, digital terrain models, and digital orthomosaic maps resulting from different measurement epochs. A new data processing method for calculating landslide displacements based on UAS photogrammetric survey data is presented in this paper, whose main advantage is the fact that it does not require the production of the above-mentioned products, enabling faster and simpler displacement determination. The proposed method is based on matching features between the images from two different UAS photogrammetric surveys and calculating the displacements based only on the comparison of two reconstructed sparse point clouds. The accuracy of the method was analyzed on a test field with simulated displacements and on an active landslide in Croatia. Moreover, the results were compared with the results obtained with a commonly used method based on comparing manually tracked features on orthomosaics from different epochs. Analysis of the test field results using the presented method show the ability to determine displacements with a centimeter level accuracy in ideal conditions even with a flight height of 120 m, and on the Kostanjek landslide with a sub-decimeter level accuracy.

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“…Landslide monitoring techniques during the last few decades developed significantly, and today usually combine the terrestrial methods (Light Detection And Ranging-LiDAR, inclinometers, piezometers, and geodetic benches) with air-borne (drones, aerial photogrammetry) and satellite interferometric synthetic-aperture radar ((In)SAR) approaches [4]. Based on the results of monitoring, one could apply different techniques in order to establish a certain pattern in the recorded time series, which will enable the derivation of a reliable prediction model.…”

Section: Introductionmentioning

confidence: 99%

Friction and Stiffness Dependent Dynamics of Accumulation Landslides with Delayed Failure

Kostic

Todorović

Lazarević³

et al. 2023

Entropy

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We propose a new model for landslide dynamics under the assumption of a delay failure mechanism. Delay failure is simulated as a delayed interaction between adjacent blocks, which mimics the relationship between the accumulation and feeder part of the accumulation slope. The conducted research consisted of three phases. Firstly, the real observed movements of the landslide were examined to exclude the existence or the statistically significant presence of background noise. Secondly, we propose a new mechanical model of an accumulation landslide dynamics, with introduced delay failure, and with variable friction law. Results obtained indicate the onset of a transition from an equilibrium state to an oscillatory regime if delayed failure is assumed for different cases of slope stiffness and state of homogeneity/heterogeneity of the slope. At the end, we examine the influence of different frictional properties (along the sliding surface) on the conditions for the onset of instability. Results obtained indicate that the increase of friction parameters leads to stabilization of sliding for homogeneous geological environment. Moreover, increase of certain friction parameters leads to the occurrence of irregular aperiodic behavior, which could be ascribed to the regime of fast irregular sliding along the slope.

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Introduction

Cited by 4 publications

References 18 publications

The Contribution of Digital Image Correlation for the Knowledge, Control and Emergency Monitoring of Earth Flows

The Contribution of Digital Image Correlation for the Knowledge, Control and Emergency Monitoring of Earth Flows

Accuracy Analysis of a New Data Processing Method for Landslide Monitoring Based on Unmanned Aerial System Photogrammetry

Friction and Stiffness Dependent Dynamics of Accumulation Landslides with Delayed Failure

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