Automatic and continuous landslide monitoring: the Rotolon Web-based platform (original) (raw)
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Remote Sensing, 2021
Slow to extremely slow landslides in urban areas may cause severe damage to buildings and infrastructure that can lead to the evacuation of local populations in case of slope accelerations. Monitoring the spatial and temporal evolution of this type of natural hazard represents a major concern for the public authorities in charge of risk management. Pariana, a village with 400 residents located in the Apuan Alps (Massa, Tuscany, Italy), is an example of urban settlement where the population has long been forced to live with considerable slope instability. In the last 30 years, due to the slope movements associated with a slow-moving landslide that has affected a significant portion of the built-up area, several buildings have been damaged, including a school and the provincial road crossing the unstable area, leading to the need for an installation of a slope monitoring system with early warning capabilities, in parallel with the implementation of mitigation works. In this paper, we show how satellite multi-temporal interferometric synthetic aperture radar (MT-InSAR) data can be effectively used when coupled with a wireless sensor network made of several bar extensometers and a borehole inclinometer. In fact, thanks to their wide area coverage and opportunistic nature, satellite InSAR data allow one to clearly identify the spatial distribution of surface movements and their long-term temporal evolution. On the other hand, geotechnical sensors installed on specific elements at risk (e.g., private buildings, retaining walls, etc.), and collected through Wi-Fi dataloggers, provide near real-time data that can be used to identify sudden accelerations in slope movements, subsequently triggering alarms. The integration of those two-monitoring systems has been tested and assessed in Pariana. Results show how a hybrid slope monitoring program based on the two different technologies can be used to effectively monitor slow-moving landslides and to identify sudden accelerations and activate a response plan
Instrumentation for Online Monitoring of Landslides
A simple to use, cost effective complete solution for web based online monitoring of landslide prone areas is presented. Data with alarms is available in table and graphical form to the user on a cloud based web monitoring service from several sensors like piezometer, in-place inclinometer, tiltmeter, creep meter, load cell, borehole extensometer, barometric pressure sensor, temperature probe, rain gauge etc.
Natural Hazards and Earth System Sciences Discussions, 2017
Diffuse and severe slope instabilities affected the whole Veneto region (Northeast Italy) between October 31<sup>st</sup> and November 2<sup>nd</sup> 2010, following a period of heavy and persistent rainfall. In this context on November 4<sup>th</sup> 2010 a large detrital mass detached from the cover of the Mt. Rotolon Deep Seated Gravitational Slope Deformation (DSGSD), located in the upper Agno River Valley, channelizing within the Rotolon Creek riverbed and evolving into a highly mobile debris flow. The latter phenomena damaged many hydraulic works, also putting at high risk bridges, local roads, together with population of the Maltaure, Turcati and Parlati villages located along the creek banks and of the Recoaro Terme town. Starting from the beginning of the emergency phase, the Civil Protection system was activated, involving the National Civil Protection Department, Veneto Region, and local administrations personnel and technicians, as wel...
On 10 March 2010, because of the heavy rainfall in the preceding days, the Montaguto landslide (Southern Italy) reactivated, affecting both state road 90 " Delle Puglie " and the Rome–Bari railway. A similar event occurred on May 2005 and on September 2009. As a result, the National Civil Protection Department (DPC) started an accurate monitoring and analysis program. A monitoring project using the GB-InSAR (ground-based interferometric synthetic aperture radar) system was emplaced to investigate the landslide kine-matics, plan urgent safety measures for risk mitigation and design long-term stabilization work. Here, we present the GB-InSAR monitoring system results and its applications in the observational method (OM) approach. GB-InSAR is an established instrument for long-term campaigns aimed at early warning and monitoring during construction works. Our paper further develops these aspects in that it highlights how the OM based on the GB-InSAR technique can produce savings in terms of cost and time in engineering projects without compromising safety. This study focuses on the key role played by the monitoring activities during the design and planning activities, with special reference to the emergency phase.
Autonomous remote monitoring system for landslides
SPIE Proceedings, 2002
There is a general tendency in systems for environmental monitoring towards ever more automatic and autonomous operation. Moreover, technologies and instruments are available to reliably interconnect distributed, disparate components. This allows the measurement, logging, data processing and interpretation activities to be carried out by separate units at different locations in near real-time. Building on the results of a previous research and development project at SUPSI, which focused on movement monitoring with GPS, the system has been generalized to accommodate a range of other sensors, thus rendering it even more interesting for geotechnical applications. In particular a laser distance meter and a robotized theodolite have been integrated. First results confirm an expected increase in robustness of the combined measurement network, which is particularly important in unfavorable stand-alone GPS reception conditions. Due to the modular architecture of the system, other sensor types, ranging from simple analog or digital sensors to complex measuring instruments may be supported with minimal effort. Measurements are transmitted via cellular or point-to-point radio links to a control station, which provides for postprocessing and system management. The control station may be remotely accessed via an Internet connection. The system takes advantage of a standard and flexible database structure which has been tailored to measurement and monitoring projects using different sensors. The system represents an architecture for remote monitoring tasks requiring a high degree of autonomy, reliability and automation. The solution can be advantageously applied to remote, near real-time measurements of low dynamics movements.
Rendiconti online della Società Geologica Italiana, 2015
Aiming at a deeper comprehension of landslide geological and geotechnical model, territorial monitoring is of utmost importance. The integration of conventional and innovative monitoring techniques allows to obtain the most precise and up-to-date information at reasonable costs. This paper focuses on the case study of Moio della Civitella (Salerno Province, Italy) where, starting from 2007, an integrated monitoring network was implemented to detect the state of activity of some landslides affecting the urban centre.
Landslides and Subsidence Assessment in the Crati Valley (Southern Italy) Using InSAR Data
Geosciences, 2018
This paper discusses the use of MPEG standards in the design and development of interoperable cloud based media architectures and services. Both offline and real-time media processing architectures are presented. Practical algorithms for metadata extraction from video content are discussed at a high level. Examples are given of derived metadata in MPEG-7 Detailed Audiovisual Profile (DAVP) for contentbased video sampling, face detection, image and face similarity, and content-based copy detection representations. A prototype system is presented in which live video encapsulated in MPEG-2 transport streams is ingested and incrementally updated MPEG-7 DAVP descriptions generated by our video analysis algorithms in real-time and delivered to clients with low delay using standard Web protocols. It is suggested that this capability can enable a range of new services such as content-based personalization of live broadcasts given that the MPEG-7 based data models fit in well with specifications for advanced television services such as TV-Anytime and ATIS IPTV Interoperability Forum.
Landslide Definition by an Integrated Monitoring System
Landslides are one of the major types of natural hazards being responsible for great infrastructure damage worldwide , endangering thousands of people every year. In this paper, the case study of a big embankment of Egnatia Odos Highway in Northern Greece, founded on a landslide area, is examined by the means of an Integrated Monitoring System. The major goal is to define the exact area of the landslide, describe the characteristics of the movement (displacement/deformation) and determine the environmental causes that contribute to the phenomenon. The system consists of a combination of geotechnical instruments and a geodetic high precision monitoring system. The geotechnical instruments consist of deep inclinometers, piezometers and tilitmeters, which provide data of the sub-surface displacements and surface tilt deformations along with piezometric data. The high precision geodetic monitoring system, based on GPS and high precision motorized TPS measurements, provides surface displ...
Local monitoring by low cost devices and free and open sources softwares
2015
The purpose of local monitoring is to closely model displacements, evolution and deformations of civil engineering structures and model local phenomena like landslides. For certain applications, latency of the monitoring results is not a crucial point. In other cases a small latency is fundamental: for example, a suspected Alpine landslide that insists on villages. In these cases, contiunous quasi real time monitoring by permanent stations is required. Here, a typical monitoring configuration is given by a GNSS reference permanent station, outside the monitored area, in a stable site and several permanent stations in the monitored area. Data can be processed and the results can be monitored in a quasi continuous way by automated procedures. In these situations, the use of low cost GNSS receivers could be interesting because it can significantly increase the number of monitored points without notably increasing the network cost. This investigation is the scope of our work and several...