A First Approach for Displacement Analysis in Lisbon Downtown Using PS-InSAR

Roque, Dora; Fonseca, Ana Maria; Henriques, M. J.; Falcão, Ana Paula

doi:10.1016/j.protcy.2014.10.094

Cited by 8 publications

(7 citation statements)

References 4 publications

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“…Major influencing factors causing land surface deformation include certain natural (intensive rainfall, geological setting, hydrogeology, earthquake, etc.) and anthropogenic activities (urban growth, excessive extraction of groundwater (Carnec & Fabriol, 1999), as well as underground construction and mining (Roque et al, 2014;Xu et al, 2016). All these factors directly or indirectly disturb the natural environment and natural resources of an area, which has a devastating impact on people's lives.…”

Section: Introductionmentioning

confidence: 99%

Integration of differential interferometric synthetic aperture radar and persistent scatterer interferometric approaches to assess deformation in enshi city, hubei, China

Khan

Zhong²,

Li³

et al. 2023

Front. Earth Sci.

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Land surface deformation can severely damage socioeconomic living conditions around the world. This study aimed to identify the Shaziba landslide and further assess deformation activities in Enshi city. For this purpose, the sentinel-1 C-bands data acquired in ascending directions were processed with Sentinel Application Platform and Stanford Method for Persistent Scatterers (StaMPS) software packages. Our results revealed the location of a landslide that occurred on 21 July 2020 in the Shaziba area, Enshi Prefecture. More interesting deformation results were found in Enshi city for the first time with a deformation range from −51.6 to 54.2 mm/year. We conducted a thorough observation of different urban infrastructures such as commercial and residential buildings, roads, bridges, and airports in Enshi city and along the Qingjiang River to evaluate land surface deformation. Observations revealed that there are a number of influencing factors contributing to disturbing the natural environment and resources in Enshi Prefecture. Of these influencing factors, intensive rainfall is a major cause as are the infiltration of rainfall into the subsurface Silurian strata together with the load of infrastructure in the study area. If this issue is not addressed it could lead to devastating geo-hazard disasters in the future. Scientific approaches to determine various causes of frequent geo-hazards in this region are of great significance for developing early warning systems for disasters and ensuring the safety of residents’ lives and property.

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Section: Introductionmentioning

confidence: 99%

Integration of differential interferometric synthetic aperture radar and persistent scatterer interferometric approaches to assess deformation in enshi city, hubei, China

Khan

Zhong²,

Li³

et al. 2023

Front. Earth Sci.

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“…There are many factors that influence ground subsidence, including some natural and anthropogenic phenomena [2,3]. One of the most reported factors responsible for subsidence are, for example, the excessive extraction of groundwater [4], underground construction, and mining [5,6]. Globally, people are shifting from rural to urban areas for better job opportunities and to access standard life facilities.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, PSInSAR can modify and improve the measurement of deformations, from 10-20 mm to 2-3 mm [20]. PSInSAR has a wide range of applications in monitoring geohazards, such as mapping displacements induced by seismic activities, landslides, volcanic swelling, ground subsidence caused by groundwater extraction, underground mining activities, and subway tunnel construction [5,21,22]. Similar research has been widely conducted in urban areas using the PSInSAR technique to monitor ground subsidence using Sentinel-1 data in Algeria [23], Beijing [24,25], London [26], Los Angeles [27], Mashhad (Middle East) [28], coastal areas of Africa [29], Spain [30], etc.…”

Section: Introductionmentioning

confidence: 99%

Monitoring Subsidence in Urban Area by PSInSAR: A Case Study of Abbottabad City, Northern Pakistan

Khan

Afzal

et al. 2021

Remote Sensing

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Globally, major cities are experiencing fast settlement growth, which threatens the equilibrium of socio-ecosystems. In Pakistan, Abbottabad city in particular is experiencing fast urban growth. The main source of daily water usage for the population in these types of cities is groundwater (tube–wells). Excessive pumping and the high need for ground water for the local community are affecting the subsurface sustainability. In this study, the persistent scatterer interferometry synthetic aperture radar (PSInSAR) technique with synthetic aperture radar (SAR) images acquired from the Sentinel-1 were used to monitor ground subsidence in Abbottabad City, Northern Pakistan. To estimate the ground subsidence in Abbottabad City, SARPROZ software was employed to process a series of Sentinel-1 images, acquired from March 2017 to September 2019, along both descending and ascending orbit tracks. The subsidence observed in the results shows a significant increase from 2017 to 2019. The subsidence map shows that, during 2017, the subsidence was −30 mm/year and about −85 mm/year in 2018. While during 2019, the subsidence reached −150 mm/year. Thus, it has seen that, in the study area, the subsidence during these years increased with mean subsidence 60 mm/year. The overall trend of subsidence showed considerably high values in the center of the city, while areas away from the center of the city experienced low subsidence. Overall, the adopted methodology can be used successfully for detecting, mapping, and monitoring land surfaces vulnerable to subsidence. This will facilitate efficient planning, designing of surface infrastructure, and mitigation management of subsidence-induced hazards.

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“…In urban areas, abundant PS points can be obtained to characterize regional land subsidence based on PS-InSAR data. Many studies have applied this method to successfully monitor urban land subsidence (Roque et al 2014;Minh et al 2015;Jiang et al 2016;Aslan et al 2018;Khorrami et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Land Subsidence in Beijing’s Sub-Administrative Center and Its Relationship with Urban Expansion Inferred from Sentinel-1/2 Observations

Cao

Gong

Chen

et al. 2021

Canadian Journal of Remote Sensing

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Beijing's Sub-Administrative Center (BSAC) is located in the South-eastern Beijing Plain, which exhibits severe subsidence. The rapid urban expansion in recent years has aggravated land subsidence and threatens the safe operation of Beijing. First, this study applied the persistent scatterer-interferometric synthetic aperture radar (PS-InSAR) to extract BSAC subsidence time series data. Second, combined with the index-based built-up index (IBI), expansion intensity index (EII), and expansion gradient index (EGI), the spatiotemporal characteristics of urban expansion were retrieved from optical data. Finally, we examined the urban expansion effects on land subsidence at the regional and single-building scales. The results showed that the maximum subsidence velocity in the BSAC reached 121 mm/year from 2015 to 2018, and the urban construction land area increased by 22%. At the regional scale, there existed a positive correlation between land subsidence and EGI or EII. This indicated that urban expansion had a certain impact on land subsidence. Therefore, we further explored the relationship between construction and land subsidence at the single-building scale. The engineering construction effects on land subsidence were divided into three periods, namely, rapid settlement, rebound, and stable periods. Although construction had a significant influence on land subsidence, it did not cause subsidence mutation. RÉSUMÉLe center sous-administratif de Beijing (BSAC) est situ e dans le sud-est de la plaine de Beijing, qui pr esente un fort affaissement. L'expansion urbaine rapide de ces derni eres ann ees a aggrav e l'affaissement du sol et menace la s ecurit e du fonctionnement de Beijing. Cette etude a d'abord appliqu e la m ethode d'interf erom etrie radar a diffuseurs persistant (PS-InSAR) pour extraire les donn ees des s eries chronologiques d'affaissement du BSAC. Ensuite, les caract eristiques spatiotemporelles de l'expansion urbaine ont et e extraites des donn ees optiques en les combinant avec l'indice de construction (IBI), l'indice d'intensit e d'expansion (EII) et l'indice de gradient d'expansion (EGI). Enfin, nous avons examin e les effets de l'expansion urbaine sur l'affaissement des sols a l' echelle r egionale et a l' echelle d'un seul bâtiment. Les r esultats ont montr e que la vitesse de subsidence maximale a atteint 121 mm/an de 2015 a 2018 dans le BSAC, et que la superficie des terrains construits en milieu urbain a augment e de 22%.A l' echelle r egionale, il existe une corr elation positive entre l'affaissement du sol et l'EGI ou l'EII. Cela indique que l'expansion urbaine a un certain impact sur l'affaissement du sol. Par cons equent, nous avons explor e plus avant la relation entre la construction et l'affaissement du sol a l' echelle d'un seul bâtiment. Les effets des travaux de g enie civil sur l'affaissement du sol ont et e divis es en trois p eriodes, a savoir l' etablissement rapide, le rebond et les p eriodes stables. Bien que la construction ait eu une influence significative sur l'affaisseme...

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A First Approach for Displacement Analysis in Lisbon Downtown Using PS-InSAR

Cited by 8 publications

References 4 publications

Integration of differential interferometric synthetic aperture radar and persistent scatterer interferometric approaches to assess deformation in enshi city, hubei, China

Integration of differential interferometric synthetic aperture radar and persistent scatterer interferometric approaches to assess deformation in enshi city, hubei, China

Monitoring Subsidence in Urban Area by PSInSAR: A Case Study of Abbottabad City, Northern Pakistan

Land Subsidence in Beijing’s Sub-Administrative Center and Its Relationship with Urban Expansion Inferred from Sentinel-1/2 Observations

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