Structural health monitoring of engineered structures using a space-borne synthetic aperture radar multi-temporal approach: from cultural heritage sites to war zones

Milillo, Pietro; Tapete, Deodato; Cigna, Francesca; Perissin, Daniele; Salzer, Jacqueline; Lundgren, P.; Fielding, E. J.; Bürgmann, Roland; Biondi, Filippo; Milillo, G.; Serio, Carmine

doi:10.1117/12.2241620

Cited by 8 publications

(5 citation statements)

References 36 publications

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“…Extensive literature has been published focusing on structural monitoring of urban areas [39][40][41][42][43] and infrastructure, including dams, 22,23 railways, 44 and the effect of tunnelling. 17,45 MT-InSAR measurements provide coverage of ground displacements at high resolution and large spatial scales not reasonably accessible with in situ measurements such as leveling and GPS.…”

Section: Multitemporal Technique Mt-insarmentioning

confidence: 99%

Evaluation of InSAR monitoring data for post‐tunnelling settlement damage assessment

Giardina

Milillo

DeJong

et al. 2018

Struct Control Health Monit

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Summary The increasing demand for underground infrastructure should be supported by innovation in monitoring and damage assessment solutions to minimise damage to surface structures caused by ground settlements. This paper evaluates the use of multitemporal synthetic aperture radar interferometry (MT‐InSAR) to calculate tunnelling‐induced deformations of buildings. The paper introduces a step‐by‐step procedure to use InSAR displacements as an input to the structural damage assessment. After a comparison between traditional and InSAR monitoring data for the London area during the Crossrail excavation, the high resolution, high density InSAR‐based displacements were used to evaluate the building deformations for a number of case studies. Results demonstrate the quality of information provided by InSAR data on soil‐structure interaction mechanisms. Such information, essential to evaluate current damage assessment procedures, is typically only collected for relatively few buildings due to the cost of traditional monitoring. A comparison between damage indicators derived from greenfield assumptions and building displacements quantifies the practical benefit of the proposed step‐by‐step procedure. This work aims at filling the gap between the most recent advances in remote sensing and the civil engineering practice, defining the first step of an automated damage assessment procedure which can impact large scale underground projects in urban areas.

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Section: Multitemporal Technique Mt-insarmentioning

confidence: 99%

Evaluation of InSAR monitoring data for post‐tunnelling settlement damage assessment

Giardina

Milillo

DeJong

et al. 2018

Struct Control Health Monit

Self Cite

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“…Usually, concrete dams exhibit a nonlinear trend of the displacement related to thermal and hydrological loads [3], while irreversible displacements are assumed to behave linearly over time [4]. In these structures, indeed, the linear component of displacements is assumed to be the irreversible part of the displacements themselves, and the corresponding velocity is strongly connected to the stability of the structure [5] and is interpreted as the aging term.…”

Section: Introductionmentioning

confidence: 99%

Toward a Comprehensive Dam Monitoring: On-Site and Remote-Retrieved Forcing Factors and Resulting Displacements (GNSS and PS–InSAR)

et al. 2021

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Many factors can influence the displacements of a dam, including water level variability and environmental temperatures, in addition to the dam composition. In this work, optical-based classification, thermal diachronic analysis, and a quasi-PS (Persistent Scatter) Interferometric SAR technique have been applied to determine both forcing factors and resulting displacements of the crest of the Castello dam (South Italy) over a one-year time period. The dataset includes Sentinel-1A images acquired in Interferometric Wide swath mode using the Terrain Observation with Progressive Scans SAR (TOPSAR); Landsat 8 Thermal Infrared Sensor (TIRS) thermal images, and Global Navigation Satellite System (GNSS) for interpreting the motion of the top of the dam retrieved via interferometry. Results suggest that it is possible to monitor both dam water level and temperature periodic forcing factors and resulting displacements via a synergistic use of different satellite images.

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“…Eklund, Persson and Pilesjö [5]). In addition to optical data, synthetic aperture radar is also increasingly being used to map structural damage in conflict zones [16,17]. Earth observation can also be used to derive information beyond the amount of surface reflectance at different wavelengths.…”

Section: Introductionmentioning

confidence: 99%

On the Geopolitics of Fire, Conflict and Land in the Kurdistan Region of Iraq

Eklund

Abdi

Shahpurwala³

et al. 2021

Remote Sensing

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There is limited understanding of the geopolitics of fire, conflict, and land, for example, how conflict and fire are related and how conflict impacts the biophysical environment. Since 2014, the natural environment in the Kurdistan Region of Iraq has been negatively affected by recurrent conflict that coincided with a sharp increase in the number of reported fires. Against this background, this study explores the spatiotemporal aspects of conflict, fire, and land use and land cover in this region. We combine several satellite-derived products, including land use and land cover, active fire, and precipitation. We apply a partial correlation analysis to understand the relationship between fire, conflict, climate, and land use and land cover. Conflict events and fires have increased since 2014 and have followed a similar temporal pattern, and we show that certain conflicts were particular to certain land use and land cover contexts. For example, the conflict involving the Islamic State was concentrated in southern areas with bare soil/sparse vegetation, and the conflict involving Turkey largely took place in northern mountainous areas characterized by natural vegetation and rugged topography. This dichotomy indicates divergent effects of conflict on the land system. A surprising finding was that fire hotspots had a low positive correlation with the amplitude of distance to conflict while accounting for other variables such as land cover and climate. The high statistical significance of this relationship indicates nonlinearity and implies that a larger range of distances to conflict creates more space for the fires to spread in the surrounding landscape. At the same time, fire hotspots had a weaker but negative correlation to distance from conflict events, which is somewhat expected as areas farther away from conflict locations have lower exposure risk to fires. We discuss the implications of these findings within the geopolitical context of the region and acknowledge the limitations of the study. We conclude with a summary of the main findings and recommendations for future research.

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Structural health monitoring of engineered structures using a space-borne synthetic aperture radar multi-temporal approach: from cultural heritage sites to war zones

Cited by 8 publications

References 36 publications

Evaluation of InSAR monitoring data for post‐tunnelling settlement damage assessment

Evaluation of InSAR monitoring data for post‐tunnelling settlement damage assessment

Toward a Comprehensive Dam Monitoring: On-Site and Remote-Retrieved Forcing Factors and Resulting Displacements (GNSS and PS–InSAR)

On the Geopolitics of Fire, Conflict and Land in the Kurdistan Region of Iraq

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