17 results on '"Solari, Lorenzo"'
Search Results
2. Satellite radar data for back-analyzing a landslide event: the Ponzano (Central Italy) case study
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Solari, Lorenzo, Raspini, Federico, Del Soldato, Matteo, Bianchini, Silvia, Ciampalini, Andrea, Ferrigno, Federica, Tucci, Stefano, and Casagli, Nicola
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- 2018
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3. European Ground Motion Service (EGMS): General Description, Product Quality, and Examples
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Costantini, Mario, Minati, Federico, Trillo, Francesco, Ferretti, Alessandro, Passera, Emanuele, Rucci, Alessio, Dehls, John, Larsen, Yngvar, Marinkovic, Petar, Eineder, Michael, Brcic, Ramon, Siegmund, Robert, Kotzerke, Paul, Kenyeres, Ambrus, Proietti, Sergio, Solari, Lorenzo, and Andersen, Henrik S.
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InSAR ,EGMS ,DSI ,CLMS ,PSI ,SAR - Published
- 2022
4. First look at the European Ground Motion Service products
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Solari, Lorenzo, Crosetto, Michele, Balasis-Levinsen, Joanna, Bateson, Luke, Casagli, Nicola, Comerci, Valerio, Guerrieri, Luca, Frei, Michaela, Mróz, Marek, Moldestad, Dag Anders, Oyen, Anneleen, Costantini, Mario, Minati, Federico, Trillo, Francesco, Proietti, Sergio, Ferretti, Alessandro, Passera, Emanuele, Dehls, John, Larsen, Yngvar, Marinkovic, Petar, Eineder, Michael, Brcic, Ramon, Siegmund, Robert, Kotzerke, Paul, Kenyeres, Ambrus, and Andersen, Henrik S.
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InSAR ,EGMS ,DSI ,CLMS ,PSI ,SAR - Published
- 2022
5. ADATools: a set of tools for the analysis of terrain movement maps obtained with SAR Interferometry
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Monserrat, Oriol, Barra, Anna, Reyes-Carmona, Cristina, Bejar Pizarro, Marta, Cuevas, María, Bejar-Pizarro, Marta, Navarro, José, Tomas, Roberto, Galve, Jorge Pedro, Solari, Lorenzo, Sarro, Roberto, Mateos, Rosa Maria, Azañon, José Miguel, Herrera, Gerardo, Crippa, Bruno, Universidad de Alicante. Departamento de Ingeniería Civil, and Ingeniería del Terreno y sus Estructuras (InTerEs)
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InSAR ,Ground displacements ,SAR Interferometry techniques ,Natural hazards ,Interferometric SAR (InSAR) ,Satellite imagery - Abstract
[EN] The SAR Interferometry techniques, Persistent Scatterer Interferometry (PSI) among them, are nowadays known as important tools for monitoring Earth surface movements. Several regional and national Ground Motion Services based on PSI already exist. Moreover, since 2022 the European Ground Motion Service will be operational and will annually provide an updated displacement map over the whole Europe. This will suppose a big amount of ground displacement measurements along the European territory. For each measurement EGMS will provide the annual velocity and the time series of deformation covering the period 2014 to one year prior to each delivery. In this context, it will be more and more necessary having tools to ease the management, analysis, and interpretation, of those wide areas and huge amount of data. We present here a first step in this direction: the ADATools are a set of tools to automatically have secondary, and more operational, products derived from a PSI map. Starting from a fast extraction of the most significant Active Deformation Areas (ADA), with the ADAFinder tool, then we can have a preliminary classification of the most probable phenomena (landslides, subsidence, settlements, or sinkholes) that is behind the detected movement, with the ADAClassifier tool. Moreover, LOS2hv tool allows to derive the horizontal (east-west) and vertical components of the movement in case we have maps of ascending and descending geometries. Finally, it is presented a product that analyzes the local displacement gradients to generate potential damage maps in urban areas. The tools will be presented thorough some results obtained on an area of the Granada County with the use of Sentinel-1 data. All the results have been achieved within the framework of the Riskcoast Project (financed by the Interreg Sudoe Program through the European Regional Development Fund, ERDF)., This work was mainly supported by the European Regional Development Fund (ERDF) through the project “RISKCOAST” (SOE3/P4/E0868) of the Interreg SUDOE Programme.
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- 2022
6. European Ground Motion Service (EGMS): From InSAR Processing to Product Dissemination
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Costantini, Mario, Minati, Federico, Trillo, Francesco, Ferretti, Alessandro, Novali, Fabrizio, Passera, Emanuele, Dehls, John, Larsen, Yngvar, Marinkovic, Petar, Eineder, Michael, Brcic, Ramon, Siegmund, Robert, Kotzerke, Paul, Kenyeres, Ambrus, Proietti, Sergio, Solari, Lorenzo, and Andersen, Henrik S.
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InSAR ,EGMS ,SAR interferometry - Published
- 2021
7. THE SAFETY PROJECT: SENTINEL-1 FOR THE GEOLOGICAL RISKS MANAGEMENT
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Barra, Anna, Monserrat, Oriol, Solari, Lorenzo, Herrera, Gerardo, López, Carmen, Onori, Roberta, Reichenbach, Paola, González-Alonso, Elena, Mateos, Rosa María, Bianchini, Silvia, and Crosetto, Michele
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Risk ,InSAR ,Monitoring ,Sentinel-1 ,Civil Protection ,PSI ,Geohazard ,Safety - Abstract
SAFETY (Sentinel-1 for geohazards regional monitoring and forecasting - safety.cttc.es) is a two-years research project funded under the ECHO (European Civil Protection and Humanitarian Aid Operations) call “Prevention and preparedness projects in Civil Protection and marine pollution”, which started the 1st of January 2016. The mission of the project was to improve the efforts in detecting and mapping geohazards (i.e. landslide, volcanic and subsidence), by assessing their activity and evaluating their impact on built-up areas and infrastructure networks through space-borne radar data. This goal has been achieved through the use of Sentinel-1 DInSAR (Differential Synthetic Aperture Radar Interferometry) derived products and the development of software tools. The most challenging part concerned the semi-automatic generation of derived maps to be easily interpreted and exploited in the geohazard management by the Civil Protection Authorities, which are usually not familiar with DInSAR products. This work provides an overview of the project activities, describing the developed procedure, the main outcomes, and the most significant results obtained over the two test sites of the project: the Canary Islands (Spain) and the Volterra municipality (Italy). The main goal of this work is to present the potentialities of Sentinel-1 interferometry as a regular complementary input for the regional scale risk management., Grant numbers : This work has been co-funded by the European Commission through the project Safety (Ref. ECHO/SUB/2015/718679/Prev02).
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- 2018
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8. Fast detection of ground motions on vulnerable elements using Sentinel-1 InSAR data.
- Author
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Solari, Lorenzo, Barra, Anna, Herrera, Gerardo, Bianchini, Silvia, Monserrat, Oriol, Béjar-Pizarro, Marta, Crosetto, Michele, Sarro, Roberto, and Moretti, Sandro
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SYNTHETIC aperture radar , *RISK assessment , *METHODOLOGY , *REMOTE sensing by radar , *EARTH sciences - Abstract
The detection of active movements that could threat the infrastructures and the population is one of the main priorities of the risk management chain. Interferometric Synthetic Aperture Radar (InSAR) techniques represent one of the most useful answers to this task; however, it is difficult to manage the huge amount of information derived from the interferometric analysis. In this work, we present a procedure for deriving impact assessment maps, over a regional test site, using as starting point Sentinel-1 SAR (Synthetic Aperture Radar) images and a catalogue of elements at risk that acts as a second input of the methodology. We applied the proposed approach, named as Vulnerable Elements Activity Maps (VEAM), to the islands of Gran Canaria, La Gomera and Tenerife (Spain), where we analysed SAR images covering the time interval November 2014-September 2016. The methodology, meant to be a powerful tool for reducing the time needed for a complete analysis of a full stack of InSAR data, is ideally suited for Civil Protection Authorities. The application of the methodology allowed to detect 108 areas affected by active deformation that are threatening one or more elements at risk in 25 municipalities of the three islands. [ABSTRACT FROM AUTHOR]
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- 2018
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9. Mapping Vulnerable Urban Areas Affected by Slow-Moving Landslides Using Sentinel-1 InSAR Data.
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Béjar-Pizarro, Marta, Notti, Davide, Mateos, Rosa M., Ezquerro, Pablo, Centolanza, Giuseppe, Herrera, Gerardo, Bru, Guadalupe, Sanabria, Margarita, Solari, Lorenzo, Duro, Javier, and Fernández, José
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LANDSLIDES ,BUILDING failures ,DEFORMATION potential ,LINE-of-sight radio links - Abstract
Landslides are widespread natural hazards that generate considerable damage and economic losses worldwide. Detecting terrain movements caused by these phenomena and characterizing affected urban areas is critical to reduce their impact. Here we present a fast and simple methodology to create maps of vulnerable buildings affected by slow-moving landslides, based on two parameters: (1) the deformation rate associated to each building, measured from Sentinel-1 SAR data, and (2) the building damage generated by the landslide movement and recorded during a field campaign. We apply this method to Arcos de la Frontera, a monumental town in South Spain affected by a slow-moving landslide that has caused severe damage to buildings, forcing the evacuation of some of them. Our results show that maximum deformation rates of 4 cm/year in the line-of-sight (LOS) of the satellite, affects La Verbena, a newly-developed area, and displacements are mostly horizontal, as expected for a planar-landslide. Our building damage assessment reveals that most of the building blocks in La Verbena present moderate to severe damages. According to our vulnerability scale, 93% of the building blocks analysed present high vulnerability and, thus, should be the focus of more in-depth local studies to evaluate the serviceability of buildings, prior to adopting the necessary mitigation measures to reduce or cope with the negative consequences of this landslide. This methodology can be applied to slow-moving landslides worldwide thanks to the global availability of Sentinel-1 SAR data. [ABSTRACT FROM AUTHOR]
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- 2017
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10. A New Set of Tools for the Generation of InSAR Visibility Maps over Wide Areas.
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Del Soldato, Matteo, Solari, Lorenzo, Novellino, Alessandro, Monserrat, Oriol, and Raspini, Federico
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SYNTHETIC aperture radar ,LAND cover ,REMOTE sensing by radar - Abstract
Multi-temporal Interferometric Synthetic Aperture Radar (MTInSAR) is a solid and reliable technique used to measure ground motion in many different environments. Today, the scientific community and a wide variety of users and stakeholders consider MTInSAR a precise tool for ground motion-related applications. The standard product of a MTInSAR analysis is a deformation map containing a high number of point-like measurement points (MP) which carry information on ground motion. The density of MPs is uneven, and they cannot be extracted continuously at large scale due to geometrical distortions and unfavourable landcover. It is a good practice to assess the feasibility of the interferometric analysis ahead of data processing. This technical note proposes a ready-to-use set of tools aimed at updating existing methods for modelling the effects of local topography and land cover on MTInSAR approaches. The goal of the tools is to provide InSAR experts and non-experts with a fast and automatic way to derive visibility maps, useful for pre-processing screening of a target area, and to forecast the expected density of MP over a specified area. Moreover, the visibility maps are a valid support for users to better understand the available standard and advanced interferometric results. Two workflows are proposed: the first generates the so-called Rindex map (Ri_m) to estimate the influence of topography on MP detection, the second is used to derive a land cover-calibrated Ri_m seen as a probabilistic model for MP detection (MPD_m). The proposed set of tools was applied in the context of the Alpine arc, whose climatic, morphological, and land cover characteristics represent a challenging environment for any interferometric approach. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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11. Sentinel-1 Big Data Processing with P-SBAS InSAR in the Geohazards Exploitation Platform: An Experiment on Coastal Land Subsidence and Landslides in Italy.
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Cigna, Francesca, Tapete, Deodato, Koch, Magaly, and Solari, Lorenzo
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LAND subsidence ,BIG data ,ELECTRONIC data processing ,SYNTHETIC aperture radar ,LANDSLIDE hazard analysis ,LANDSLIDES ,LAND cover - Abstract
The growing volume of synthetic aperture radar (SAR) imagery acquired by satellite constellations creates novel opportunities and opens new challenges for interferometric SAR (InSAR) applications to observe Earth's surface processes and geohazards. In this paper, the Parallel Small BAseline Subset (P-SBAS) advanced InSAR processing chain running on the Geohazards Exploitation Platform (GEP) is trialed to process two unprecedentedly big stacks of Copernicus Sentinel-1 C-band SAR images acquired in 2014–2020 over a coastal study area in southern Italy, including 296 and 283 scenes in ascending and descending mode, respectively. Each stack was processed in the GEP in less than 3 days, from input SAR data retrieval via repositories, up to generation of the output P-SBAS datasets of coherent targets and their displacement histories. Use-cases of long-term monitoring of land subsidence at the Capo Colonna promontory (up −2.3 cm/year vertical and −1.0 cm/year east–west rate), slow-moving landslides and erosion landforms, and deformation at modern coastal protection infrastructure in the city of Crotone are used to: (i) showcase the type and precision of deformation products outputting from P-SBAS processing of big data, and the derivable key information to support value-adding and geological interpretation; and (ii) discuss potential and challenges of big data processing using cloud/grid infrastructure. [ABSTRACT FROM AUTHOR]
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- 2021
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12. Review of Satellite Interferometry for Landslide Detection in Italy.
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Solari, Lorenzo, Del Soldato, Matteo, Raspini, Federico, Barra, Anna, Bianchini, Silvia, Confuorto, Pierluigi, Casagli, Nicola, and Crosetto, Michele
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LANDSLIDES , *SYNTHETIC aperture radar , *INTERFEROMETRY , *REMOTE sensing , *SATELLITE-based remote sensing - Abstract
Landslides recurrently impact the Italian territory, producing huge economic losses and casualties. Because of this, there is a large demand for monitoring tools to support landslide management strategies. Among the variety of remote sensing techniques, Interferometric Synthetic Aperture Radar (InSAR) has become one of the most widely applied for landslide studies. This work reviews a variety of InSAR-related applications for landslide studies in Italy. More than 250 papers were analyzed in this review. The first application dates back to 1999. The average production of InSAR-related papers for landslide studies is around 12 per year, with a peak of 37 papers in 2015. Almost 70% of the papers are written by authors in academia. InSAR is used (i) for landslide back analysis (3% of the papers); (ii) for landslide characterization (40% of the papers); (iii) as input for landslide models (7% of the papers); (iv) to update landslide inventories (15% of the papers); (v) for landslide mapping (32% of the papers), and (vi) for monitoring (3% of the papers). Sixty-eight percent of the authors validated the satellite results with ground information or other remote sensing data. Although well-known limitations exist, this bibliographic overview confirms that InSAR is a consolidated tool for many landslide-related applications. [ABSTRACT FROM AUTHOR]
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- 2020
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13. Monitoring Ground Instabilities Using SAR Satellite Data: A Practical Approach.
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Del Soldato, Matteo, Solari, Lorenzo, Raspini, Federico, Bianchini, Silvia, Ciampalini, Andrea, Montalti, Roberto, Ferretti, Alessandro, Pellegrineschi, Vania, and Casagli, Nicola
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DATA - Abstract
Satellite interferometric data are widely exploited for ground motion monitoring thanks to their wide area coverage, cost efficiency and non-invasiveness. The launch of the Sentinel-1 constellation opened new horizons for interferometric applications, allowing the scientists to rethink the way in which these data are delivered, passing from a static view of the territory to a continuous streaming of ground motion measurements from space. Tuscany Region is the first worldwide example of a regional scale monitoring system based on satellite interferometric data. The processing chain here exploited combines a multi-interferometric approach with a time-series data mining algorithm aimed at recognizing benchmarks with significant trend variations. The system is capable of detecting the temporal changes of a wide variety of phenomena such as slow-moving landslides and subsidence, producing a high amount of data to be interpreted in a short time. Bulletins and reports are derived to the hydrogeological risk management actors at regional scale. The final output of the project is a list of potentially hazardous and accelerating phenomena that are verified on site by field campaign by completing a sheet survey in order to qualitatively estimate the risk and to suggest short-term actions to be taken by local entities. Two case studies, one related to landslides and one to subsidence, are proposed to highlight the potential of the monitoring system to early detect anomalous ground changes. Both examples represent a successful implementation of satellite interferometric data as monitoring and risk management tools, raising the awareness of local and regional authorities to geohazards. [ABSTRACT FROM AUTHOR]
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- 2019
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14. Satellite Data to Improve the Knowledge of Geohazards in World Heritage Sites.
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Pastonchi, Laura, Barra, Anna, Monserrat, Oriol, Luzi, Guido, Solari, Lorenzo, and Tofani, Veronica
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WORLD Heritage Sites ,LANDSLIDES ,CULTURAL property ,LANDSLIDE hazard analysis - Abstract
According to the United Nations Educational, Scientific and Cultural Organization (UNESCO) agency, the World Heritage Sites (WHS) inscribed in the World Heritage List (WHL) must be safeguarded with an adequate protection system, in order to guarantee their integrity and authenticity. Currently, many UNESCO sites are threatened by geohazards, but the safeguard of these sites does not seem to be wide-ranging. Looking at the standard list of factors affecting the Outstanding Universal Value (OUV) of WHS, which has been adopted by the World Heritage Committee in 2008, it seems that only "sudden geological events" are considered as factors that undermine the protection of the properties. Furthermore, it is well known that slow-kinematic phenomena can also threaten cultural and natural heritage. This study proposes a satellite InSAR-based procedure to identify and monitor the temporal and spatial evolution of ground deformation related to slow-kinematic geohazards (slow-moving landslides and ground-subsidence). This procedure, applied in this work on the Tuscany Region (Italy), simplify the InSAR products interpretation, making them easily exploitable by the local WHS managers for long-term geohazards monitoring and conservation strategies. These activities, thanks to the main characteristics of the recent Sentinel-1 data (short revisit time, free availability without any restrictions and worldwide coverage), can be defined for each UNESCO site of the world. [ABSTRACT FROM AUTHOR]
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- 2018
- Full Text
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15. Lava delta deformation as a proxy for submarine slope instability.
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Di Traglia, Federico, Nolesini, Teresa, Solari, Lorenzo, Ciampalini, Andrea, Frodella, William, Steri, Damiano, Allotta, Benedetto, Rindi, Andrea, Marini, Lorenzo, Monni, Niccolò, Galardi, Emanuele, and Casagli, Nicola
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DEFORMATIONS (Mechanics) , *LAVA , *SLOPES (Physical geography) , *DISPLACEMENT (Mechanics) , *LANDSLIDES - Abstract
The instability of lava deltas is a recurrent phenomenon affecting volcanic islands, which can potentially cause secondary events such as littoral explosions (due to interactions between hot lava and seawater) and tsunamis. It has been shown that Interferometric Synthetic Aperture Radar (InSAR) is a powerful technique to forecast the collapse of newly emplaced lava deltas. This work goes further, demonstrating that the monitoring of lava deltas is a successful strategy by which to observe the long-term deformation of subaerial–submarine landslide systems on unstable volcanic flanks. In this paper, displacement measurements derived from Synthetic Aperture Radar (SAR) imagery were used to detect lava delta instability at Stromboli volcano (Italy). Recent flank eruptions (2002–2003, 2007 and 2014) affected the Sciara del Fuoco (SdF) depression, created a “stacked” lava delta, which overlies a pre-existing scar produced by a submarine–subaerial tsunamigenic landslide that occurred on 30 December 2002. Space-borne X-band COSMO-SkyMED (CSK) and C-band SENTINEL-1A (SNT) SAR data collected between February 2010 and October 2016 were processed using the SqueeSAR algorithm. The obtained ground displacement maps revealed the differential ground motion of the lava delta in both CSK and SNT datasets, identifying a stable area (characterized by less than 2 mm/y in both datasets) within the northern sector of the SdF and an unstable area (characterized by velocity fields on the order of 30 mm/y and 160 mm/y in the CSK and SNT datasets, respectively) in the central sector of the SdF. The slope stability of the offshore part of the SdF, as reconstructed based on a recently performed multibeam bathymetric survey, was evaluated using a 3D Limit Equilibrium Method (LEM). In all the simulations, Factor of Safety (F) values between 0.9 and 1.1 always characterized the submarine slope between the coastline and −250 m a.s.l. The critical surfaces for all the search volumes corresponded to the 30 December 2002 landslide, which involved the lava delta and its surrounding areas. InSAR data provided the post-effusive deformation field after the 2007 and 2014 flank eruptions, whereas LEM results highlighted that the accumulation of lava flows on the prone-to-failure SdF submarine slope is the main cause of the detected lava delta deformation. Lava delta instability, measured also at Pico Island (Azores) and Kilauea volcano (Hawaii), is evidence of the broader spectrum of instability phenomena that take place in the coastal or submarine area of the flanks of the volcanoes. At Kilauea, past lava deltas have moved faster than the surrounding slope and the recorded movements relate only to the collapses of the deltas themselves, producing rapid mass wasting near the coasts. In contrast, at Stromboli and Pico, lava deltas move at the same velocity as the surrounding slope. In these cases, the displacement at lava deltas can be considered as a proxy for the deformation of submarine slides. There are very few studies dealing with lava delta deformation, thus, the analysis presented in this work will benefit the monitoring of submarine slopes in other prone-to-failure coastal or island volcanic systems which have the potential to generate tsunamis. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
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16. Mapping Vulnerable Urban Areas Affected by Slow-Moving Landslides Using Sentinel-1 InSAR Data
- Author
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Gerardo Herrera, Rosa María Mateos, Lorenzo Solari, José M. García Fernández, Javier Duro, Margarita Sanabria, Pablo Ezquerro, Giuseppe Centolanza, Davide Notti, Marta Béjar-Pizarro, Guadalupe Bru, Ministerio de Economía y Competitividad (España), European Commission, European Space Agency, Béjar-Pizarro, Marta [0000-0001-7449-4048], Notti, Davide [0000-0002-8256-0743], Herrera, Gerardo [0000-0002-6633-9184], Solari, Lorenzo [0000-0003-3637-2669], Béjar-Pizarro, Marta, Notti, Davide, Herrera, Gerardo, and Solari, Lorenzo
- Subjects
Moderate to severe ,Geodinámica ,010504 meteorology & atmospheric sciences ,Serviceability (structure) ,building damages ,0211 other engineering and technologies ,Terrain ,02 engineering and technology ,01 natural sciences ,riesgo natural ,InSAR ,Mining engineering ,Natural hazard ,Interferometric synthetic aperture radar ,Geotechnical engineering ,Geología ,lcsh:Science ,Field campaign ,021101 geological & geomatics engineering ,0105 earth and related environmental sciences ,Landslide ,Arcos de la Frontera ,deslizamiento terreno ,Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció [Àrees temàtiques de la UPC] ,Esllavissades ,zona urbana ,daño catástrofe natural ,General Earth and Planetary Sciences ,Environmental science ,Sentinel-1 ,lcsh:Q ,provincia Cádiz ,Landslides - Abstract
Landslides are widespread natural hazards that generate considerable damage and economic losses worldwide. Detecting terrain movements caused by these phenomena and characterizing affected urban areas is critical to reduce their impact. Here we present a fast and simple methodology to create maps of vulnerable buildings affected by slow-moving landslides, based on two parameters: (1) the deformation rate associated to each building, measured from Sentinel-1 SAR data, and (2) the building damage generated by the landslide movement and recorded during a field campaign. We apply this method to Arcos de la Frontera, a monumental town in South Spain affected by a slow-moving landslide that has caused severe damage to buildings, forcing the evacuation of some of them. Our results show that maximum deformation rates of 4 cm/year in the line-of-sight (LOS) of the satellite, affects La Verbena, a newly-developed area, and displacements are mostly horizontal, as expected for a planar-landslide. Our building damage assessment reveals that most of the building blocks in La Verbena present moderate to severe damages. According to our vulnerability scale, 93% of the building blocks analysed present high vulnerability and, thus, should be the focus of more in-depth local studies to evaluate the serviceability of buildings, prior to adopting the necessary mitigation measures to reduce or cope with the negative consequences of this landslide. This methodology can be applied to slow-moving landslides worldwide thanks to the global availability of Sentinel-1 SAR data., Geohazards InSAR laboratory and Modelling Group, Departamento de Investigación y Prospectiva Geocientífica, Instituto Geológico y Minero de España, España, Istituto di ricerca per la protezione idrogeologica, Italia, Unidad de Granada, Instituto Geológico y Minero de España, España, Dares Technology, España, Earth Observation and Geohazards Expert Group, EuroGeoSurveys, Bélgica, Instituto de Geociencias, Consejo Superior de Investigaciones Científicas, España, Instituto de Geociencias, Universidad Complutense de Madrid, España, Dipartimento di Scienze della Terra, Università degli Studi di Firenze, Italia
- Published
- 2017
17. From satellite interferometry displacements to potential damage maps: A tool for risk reduction and urban planning.
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Barra, Anna, Reyes-Carmona, Cristina, Herrera, Gerardo, Galve, Jorge Pedro, Solari, Lorenzo, Mateos, Rosa María, Azañón, Jose Miguel, Béjar-Pizarro, Marta, López-Vinielles, Juan, Palamà, Riccardo, Crosetto, Michele, Sarro, Roberto, Cuervas-Mons, José, and Monserrat, Oriol
- Subjects
- *
URBAN planning , *CONTINENTAL drift , *GENTRIFICATION , *GROUND motion , *INTERFEROMETRY , *RECEIVER operating characteristic curves , *URBAN growth , *FLOOD damage - Abstract
Persistent Scatterer Interferometry (PSI) is a consolidated tool for detecting and monitoring ground surface displacements. The availability of satellite data with free access policy and high monitoring capabilities (in terms of resolution and acquisition frequency) is increasing. Moreover, the first continental displacement map of Europe will be freely available in quarter one 2022 by the latest Copernicus Service, the European Ground Motion Service (EGMS). The EGMS will provide ground displacement maps, updated every year, delivering valuable information to a wide range of users, such as public or governmental institutions, industry, academia, and citizens. This vast amount of information needs semi-automatic tools and methodologies to derive user-oriented products that can be easily used by land use and urban planning decision-makers, who are often unfamiliar with PSI. This work proposes a semi-automatic procedure to identify damage prone areas in urban environments from wide-area PSI displacement maps. The proposed method identifies the most significant Active Deformation Areas (ADAs) to calculate three products based on the displacement intensity gradient: the Gradient Intensity Map, the Gradient Vectors and Time Series, and the Potential Damage Map. These products allow identifying buildings and urban structures exposed to potential damage, which could be followed by a more detailed building-based vulnerability and risk assessment. The methodology has been applied to an area of the province of Granada (Andalucía, Spain) but it can be applied to any other urban environment where PSI displacement maps are available. To demonstrate the advantages and limitations of the proposed method, results are discussed in five coastal resorts (Cerro Gordo, Punta de la Mona, Marina del Este, Alfa Mar, and Monte de los Almendros), strongly affected by slope movements. The methodology allowed to derive 175 ADAs from about 200,000 measurement points. About 15% of the resulting area has been found to correspond to high or very high gradient intensity class, and 192 out of 633 buildings have been identified to be prone to moderate or high potential damage. A damage prediction test has been realized through Receiver Operating Characteristic (ROC) analysis, based on a damage inventory map derived from field surveys. The results demonstrate the effectiveness of the methodology to localize damaged or potentially damaged buildings, substantially reducing the time of analysis. • A step towards the automatic exploitation of satellite interferometric (InSAR) data. • Automatic exploitation of PSI to support a multi-scale geohazard risk management. • A methodology for the automatic exploitation of EGMS continental displacement maps. • Potential Damage Maps based on spatial gradients of velocity and angular distortion. • Regional scale detection of coastal landsides causing damages in Granada Region. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
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