Abstract
Ground and infrastructure stability are important for our technologically based civilization. Infrastructure projects take into consideration the risk posed by ground displacement (e.g., seismicity, geological conditions and geomorphology). To address this risk, earth scientists and civil engineers employ a range of measurement technologies, such as optical/laser leveling, GNSS and, lately, SAR interferometry. Currently there is a rich source of measurement information provided in various formats that covers most of the industrialized world. Integration of this information becomes an issue that will only increase in importance in the future. This work describes a practical approach to address and validate integrated stability measurements through the development of a platform that could be easily used by a variety of groups, from geoscientists to civil engineers and also private citizens with no training in this field. The platform enables quick cross-validation between different data sources, easy detection of critical areas at all scales (from large-scale individual buildings to small-scale tectonics) and can be linked to end-users from various monitoring fields and countries for automated notifications. This work is closing the gap between the specialized monitoring work and the general public, delivering the full value of technology for societal benefits in a free and open manner. The platform is calibrated and validated by an application of SAR interferometry data to specific situations in the general area of the Romanian Carpathians and their foreland. The results demonstrate an interplay between anthropogenically induced changes and high-amplitude active tectono–sedimentary processes creating rapid regional and local topographic variations.
Highlights
Ground and infrastructure stability are important for our technologically based civilization
Local scale results are represented by clearly localized subsidence/uplift areas that can be delimited directly from the persistent scatterers interferometry (PSInSAR) maps
In the last 20 years, the PSInSAR techniques for ground displacement measurements evolved from scientific research to the operational stage
Summary
Ground and infrastructure stability are important for our technologically based civilization. Infrastructure projects take into consideration the risk posed by ground displacement (e.g., seismicity, geological conditions and geomorphology). To address this risk, earth scientists and civil engineers employ a range of measurement technologies, such as optical/laser levelling, GNSS and, lately, SAR interferometry. SAR-based persistent scatterers interferometry (PSInSAR) is a newer technique, certified to measure displacements in the radar line of sight (SAR LOS) with accuracies similar to GNSS [3]. The certification process was led by the European Space Agency as part of the Terrafirma [4,5] program designed to validate the PSInSAR techniques and to select a number of service providers, among them, Terrasigna
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