Persistent Scatterer Interferometry of Sentinel-1 time series to detect ground subsidence in the city of Recife, Brazil

Bedini, Enton

doi:10.29150/jhrs.v10.1.p1-9

Cited by 3 publications

(2 citation statements)

References 17 publications

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“…The participation of these last three problems contributes to the development of land subsidence in several places of Recife (Luna et al, 2017;Bedini, 2020). This geological phenomenon implies a lowering of the surface and causes greater concern in urban areas.…”

Section: Introductionmentioning

confidence: 99%

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Monitoring of land subsidence in the city of Recife/Brazil using Sentinel-1 SAR interferometry

Ruiz-Armenteros

Souza

Cabral

2022

Proceedings of the 5th Joint International Symposium on Deformation Monitoring - JISDM 2022

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One of the main causes of land subsidence in the world is the exploitation of groundwater above the regeneration capacity of the aquifer systems. However, the rapid urban growth in estuarine areas can also contribute to the development of this phenomenon. An example of this occurs in the city of Recife, northeastern Brazil. The municipality is built on an estuarine plain composed of several rivers (Capibaribe, Beberibe, Tejipió), which formation results from the occupation of humid areas and mangroves. In recent decades, the excessive removal of water resources from the subsoil has caused the reduction of more than 100 meters of the deep aquifer piezometric level in some places. The presence of these factors in Recife may contribute to land subsidence. To detect this phenomenon, the Persistent Scatterer Interferometric Synthetic Aperture Radar (PSInSAR) technique was used. The dataset consisted of 135 Sentinel-1A Interferometric Wide (IW) Single Look Complex (SLC) images from September 2016 to April 2021. The images were acquired in descending orbits and VV polarization. The results of the PSInSAR analysis reveal that in Recife there are several areas of land subsidence with a rate close to -15 mm/year. The main occurrence of soil settlement is observed in large recently built areas in the west zone, and small areas in the north zone. Minor cases occur in the southern zone due to the exploitation of groundwater. The identification of these land subsidence areas can help in the study of urban drainage to avoid flooding sites and in the adoption of mitigating measures for the suitable use of underground water resources.

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Section: Introductionmentioning

confidence: 99%

“…The use of PSInSAR technology in the determination of areas of surface instability due to recent urbanization in Recife occurs in a pioneering way in the work of Bedini (2020). That study uses Sentinel-1 images (from April 2017 to September 2019) to detect drawdown values of up to -15 mm/year in several neighborhoods in the west zone.…”

Section: Introductionmentioning

confidence: 99%

Monitoring of land subsidence in the city of Recife/Brazil using Sentinel-1 SAR interferometry

Ruiz-Armenteros

Souza

Cabral

2022

Proceedings of the 5th Joint International Symposium on Deformation Monitoring - JISDM 2022

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Using DInSAR to map ground deformation on road infrastructure (case study: North Buton, Southeast Sulawesi)

Jaya,

Hasria,

Simatupang

et al. 2021

IOP Conf. Ser.: Earth Environ. Sci.

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Analysis of Urbanization-Induced Land Subsidence in the City of Recife (Brazil) Using Persistent Scatterer SAR Interferometry

Souza,

de Moura Reis,

da Silva Pereira Cabral

et al. 2024

Remote Sensing

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The article addresses anthropogenic and geological conditions related to the development of soil subsidence in the western zone of Recife (Brazil). Over the past 50 years, human activity has intensified in areas previously affected by soft soils (clay, silt, and sandstone) resulting in subsidence due to additional loads (landfills and constructions). The duration of the settlement process can be significantly influenced by the specific characteristics of the soil composition and geological conditions of the location. This work presents, for the first time, accurate InSAR time series maps that describe the spatial pattern and temporal evolution of the settlement, as well as the correlation with the geological profile, and validation with Global Navigation Satellite System (GNSS) data. Persistent Scatterer Interferometry (PS-InSAR) was employed in the analysis of Single Look Complex (SLC) images generated by 100 ascending COSMO-SkyMed (CSK) and 65 PAZ (32 ascending, and 33 descending) from the X-band, along with 135 descending Sentinel-1 (S1) acquisitions from the C-band. These data were acquired over the period from 2011 to 2023. The occurrence of subsidence was identified in several locations within the western region, with the most significant displacement rates observed in the northern, central, and southern areas. In the northern region, the displacement rates were estimated to be approximately −20 mm/year, with the Várzea and Caxangá neighborhoods exhibiting the highest rates. In the central region, the displacement rates were estimated to be approximately −15 mm/year, with the Engenho do Meio, Cordeiro, Torrões, and San Martin neighborhoods exhibiting the highest rates. Finally, in the southern region, the displacement rates were estimated to be up to −25 mm/year, with the Caçote, Ibura, and Ipsep neighborhoods exhibiting the highest rates. Additionally, east–west movements were observed, with velocities reaching up to −7 mm/year toward the west. These movements are related to the lowering of the land. The study highlights that anthropogenic effects in the western zone of Recife contribute to the region’s vulnerability to soil subsidence.

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Persistent Scatterer Interferometry of Sentinel-1 time series to detect ground subsidence in the city of Recife, Brazil

Cited by 3 publications

References 17 publications

Monitoring of land subsidence in the city of Recife/Brazil using Sentinel-1 SAR interferometry

Monitoring of land subsidence in the city of Recife/Brazil using Sentinel-1 SAR interferometry

Using DInSAR to map ground deformation on road infrastructure (case study: North Buton, Southeast Sulawesi)

Analysis of Urbanization-Induced Land Subsidence in the City of Recife (Brazil) Using Persistent Scatterer SAR Interferometry

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