Monitoring of Critical Infrastructures by Micromotion Estimation: The Mosul Dam Destabilization

Autor: Silvia Liberata Ullo, Pia Addabbo, Carmine Clemente, Filippo Biondi, Danilo Orlando
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Signal Processing (eess.SP)
Synthetic aperture radar
Atmospheric Science
010504 meteorology & atmospheric sciences
Correlation coefficient
TK
Modal analysis
Geophysics. Cosmic physics
0211 other engineering and technologies
02 engineering and technology
Doppler subapertures
01 natural sciences
symbols.namesake
persistent scatterers interferometry (PSI)
FOS: Electrical engineering
electronic engineering
information engineering
Electrical Engineering and Systems Science - Signal Processing
Computers in Earth Sciences
micromotion estimation
TC1501-1800
021101 geological & geomatics engineering
0105 earth and related environmental sciences
QC801-809
multichromatic analysis (MCA)
synthetic aperture radar (SAR)
modal analysis
Vibration
Ocean engineering
Modal
GNSS applications
symbols
Doppler effect
Seismology
Geology
Zdroj: IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 13, Pp 6337-6351 (2020)
ISSN: 2151-1535
Popis: In this paper, authors propose a new procedure to provide a tool for monitoring critical infrastructures. Particularly, through the analysis of COSMO-SkyMed satellite data, a detailed and updated survey is provided, for monitoring the accelerating destabilization process of the Mosul dam, that represents the largest hydraulic facility of Iraq and is located on the Tigris river. The destructive potential of the wave that would be generated, in the event of the dam destruction, could have serious consequences. If the concern for human lives comes first, the concern for cultural heritage protection is not negligible, since several archaeological sites are located around the Mosul dam. The proposed procedure is an in-depth modal assessment based on the micro-motion estimation, through a Doppler sub-apertures tracking and a Multi-Chromatic Analysis (MCA). The method is based initially on the Persistent Scatterers Interferometry (PSI) that is also discussed for completeness and validation. The modal analysis has detected the presence of several areas of resonance that could mean the presence of cracks, and the results have shown that the dam is still in a strong destabilization. Moreover, the dam appears to be divided into two parts: the northern part is accelerating rapidly while the southern part is decelerating and a main crack in this north-south junction is found. The estimated velocities through the PS-InSAR technique show a good agreement with the GNSS in-situ measurements, resulting in a very high correlation coefficient and showing how the proposed procedure works efficiently.
13 pages, 24 figures
Databáze: OpenAIRE
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