Monitoring of an embankment dam in southern Spain based on Sentinel-1 Time-series InSAR
MetadataShow full item record
Antonio M. Ruiz-Armenteros... [et al.]. Monitoring of an embankment dam in southern Spain based on Sentinel-1 Time-series InSAR, Procedia Computer Science, Volume 181, 2021, Pages 353-359, ISSN 1877-0509, [https://doi.org/10.1016/j.procs.2021.01.178]
SponsorshipESA Research and Service; ReMoDams project (AEI/FEDER, UE) from Spanish Ministry of Economy, Industry and Competitiveness ESP2017-89344-R; CEACTEMA from University of Jaen (Spain); Junta de Andalucia European Commission RNM-282; ERDF through the Operational Programme for Competitiveness and Internationalisation -COMPETE 2020 Programme POCI-01-0145FEDER-006961; National Funds through the FCT -Fundacao para a Ciencia e a Tecnologia (Portuguese Foundation for Science and Technology) UID/EEA/50014/2013; Ministry of Education, Youth and Sports from the National Programme of Sustainability (NPU II) project "IT4Innovations excellence in science" (Czech Republic) LQ1602; Vedecka grantova agentura MSVVaS SR a SAV (VEGA) 2/0100/20; PAIUJA-2019/2020
Deformation monitoring is a common practice in most of dams to ensure their structural health and safety status. Systematic monitoring is frequently carried out by means of geotechnical sensors and geodetic techniques that, although very precise an accurate, can be time-consuming and economically costly. Remote sensing techniques are proved to be very effective in assessing deformation. Changes in the structure, shell or associated infrastructures of dams, including adjacent slopes, can be efficiently recorded by using satellite Synthetic Aperture Radar Inteferometry (InSAR) techniques, in particular, Muti-Temporal InSAR time-series analyses. This is a mature technology nowadays but not very common as a routine procedure for dam monitoring. Today, thanks to the availability of spaceborne satellites with high spatial resolution SAR images and short revisit times, this technology is a powerful cost-effective way to monitor millimeter-level displacements of the dam structure and its surroundings. What is more, the potential of the technique is increased since the Copernicus C-band SAR Sentinel-1 satellites are in orbit, due to the high revisit time of 6 days and the free data availability. ReMoDams is a Spanish research project devoted to provide the deformation monitoring of several embankments dams using advances time-series InSAR techniques. One of these dams is The Arenoso dam, located in the province of Cordova (southern Spain). This dam has been monitored using Sentinel-1 SAR data since the beginning of the mission in 2014. In this paper, we show the processing of 382 SLC SAR images both in ascending and descending tracks until March 2019. The results indicate that the main displacement of the dam in this period is in the vertical direction with a rate in the order of -1 cm/year in the central part of the dam body.