Title
Deformation monitoring of dam infrastructures via spaceborne MT-InSAR. The case of La Vinuela (Malaga, southern Spain)
Author
Ruiz-Armenteros, A.M.
Lazecky, M.
Hlavacova, I.
BakoAaˆ, M.
manuel Delgado, J.
Sousa, J.J.
Lamas-Fernandez, F.
Marchamalo, M.
Caro-Cuenca, M.
Papco, J.
Perissin, D.
Publication year
2018
Abstract
Dams require continuous security and monitoring programs, integrated with visual inspection and testing in dam surveillance programs. New approaches for dam monitoring focus on multi-sensor integration, taking into account emerging technologies such as GNSS, optic fiber, TLS, InSAR techniques, GBInSAR, GPR, that can be used as complementary data in dam monitoring, eliciting causes of dam deformation that cannot be assessed with traditional techniques. This paper presents a Multi-temporal InSAR (MT-InSAR) monitoring of La Vinuela dam (Malaga, Spain), a 96 m height earth-fill dam built from 1982 to 1989. The presented MT-InSAR monitoring system comprises three C-band radar (5,7 cm wavelength) datasets from the European satellites ERS-1/2 (1992-2000), Envisat (2003-2008), and Sentinel-1A/B (2014-2018). ERS-1/2 and Envisat datasets were processed using StaMPS. In the case of Sentinel-1A/B, two different algorithms were applied, SARPROZ and ISCE-SALSIT, allowing the comparison of the estimated LOS velocity pattern. The obtained results confirm that LaVinuela dam is deforming since its construction, as an earth-fill dam. Maximum deformation rates were measured in the initial period (1992-2000), being around -7 mm/yr (LOS direction) on the coronation of the dam. In the period covered by the Envisat dataset (2003-2008), the average deforming pattern was lower, of the order of -4 mm/yr. Sentinel-1A/B monitoring confirms that the deformation is still active in the period 2014-2018 in the central-upper part of the dam, with maximums of velocity reaching -6 mm/yr. SARPROZ and ISCE-SALSIT algorithms provide similar results. It was concluded that MT-InSAR techniques can support the development of new and more effective means of monitoring and analyzing the health of dams complementing actual dam surveillance systems. A© 2018 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license.
Subject
Dams
Deformation
Envidat
ERS-1/2
InSAR
La Vinuela
SAR
Sentinel-1
Dams
Deformation
Geodetic satellites
Geophysical prospecting
Ground penetrating radar systems
Information management
Information systems
Information use
Lanthanum compounds
Project management
Space-based radar
Synthetic aperture radar
Deformation monitoring
Emerging technologies
Envidat
Multi-sensor integrations
Security and monitoring
Sentinel-1
Traditional techniques
Monitoring
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http://resolver.tudelft.nl/uuid:51bed202-6eb3-4cab-a8e3-c17aaf4bad77
TNO identifier
862578
Publisher
Elsevier B.V.
ISSN
1877-0509
Source
Procedia Computer Science, International Conference on ENTERprise Information Systems / International Conference on Project MANagement / International Conference on Health and Social Care Information Systems and Technologies, CENTERIS/ProjMAN/HCist 2018, 21 November 2018 through 23 November 2018, 346-353
Document type
conference paper