A Satellite Data Mining Approach Based on Self-Organized Maps for the Early Warning of Ground Settlements in Urban Areas

Structural failure prevention is a crucial issue in civil engineering. The causes of structure or infrastructure collapse include phenomena that slowly deform the ground and could affect the stability of foundations such as differential settlements, subsidence, groundwater changes, slope failure, or...

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Bibliographic Details
Published in:Applied sciences 2022-03, Vol.12 (5), p.2679
Main Authors: Montisci, Augusto, Porcu, Maria Cristina
Format: Article
Language:English
Subjects:
Algorithms
artificial neural networks
Brain
Civil engineering
collapse prevention
early warning
Emergency communications systems
Failure prevention
Global positioning systems
GPS
Groundwater
In situ measurement
Infrastructure
Interferometric synthetic aperture radar
Landslides
Monitoring methods
MT-InSAR timeseries
Neural networks
Neural stem cells
Precursors
Rain
Remote sensing
Self organizing maps
Settling
Structural failure
Structural health monitoring
Unsupervised learning
urban area monitoring
Urban areas
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Summary:Structural failure prevention is a crucial issue in civil engineering. The causes of structure or infrastructure collapse include phenomena that slowly deform the ground and could affect the stability of foundations such as differential settlements, subsidence, groundwater changes, slope failure, or landslides. When large urban areas need to be monitored, such phenomena are hard to be mapped by means of classical structural health monitoring methods due to the unaffordable quantity of in situ measurements these methods would entail. A very effective alternative is exploiting multitemporal interferometric synthetic aperture radar (MT-InSAR) displacement timeseries which would enable the monitoring of wide geographical areas over a weekly basis and extended spatial coverage. Analyzing the enormous amount of data produced by MT-InSAR may help to assess the time evolution of phenomena but can barely highlight “anomalous” ground deformations in time, to prevent likely structural failure. This paper proposes a method which analyzes the InSAR data through an unsupervised learning paradigm with the purpose of detecting critical events at their early stage. On the basis of similarities among time sequences, this method allows the finding of precursors of anomalous ground settlement behaviors, the correct framing of which should be directed to specialist evaluation and in situ inspections.
ISSN:2076-3417
2076-3417
DOI:10.3390/app12052679