TerraSAR-X Data for High-Precision Land Subsidence Monitoring: A Case Study in the Historical Centre of Hanoi, Vietnam

Le, Tuan; Chang, Chung Pai; Nguyen, Huan X.; Yhokha, Akano

doi:10.3390/rs8040338

Cited by 28 publications

(16 citation statements)

References 27 publications

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“…Aside from the above-mentioned TS-InSAR methods, other approaches, e.g., the Temporally Coherent Point InSAR (TCPInSAR) [26], the Quasi-PS (QPS) [27], and the Intermittent SBAS (ISBAS) [28], were proposed for different monitoring situations. These TS-InSAR methods have been widely applied in urban surface subsidence monitoring in Beijing [2,29], Mexico [30], Hanoi [31], Shanghai [32,33], and Jinan [34].…”

Section: Introductionmentioning

confidence: 99%

Wuhan Surface Subsidence Analysis in 2015–2016 Based on Sentinel-1A Data by SBAS-InSAR

et al. 2017

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Abstract:The Terrain Observation with Progressive Scans (TOPS) acquisition mode of Sentinel-1A provides a wide coverage per acquisition and features a repeat cycle of 12 days, making this acquisition mode attractive for surface subsidence monitoring. A few studies have analyzed wide-coverage surface subsidence of Wuhan based on Sentinel-1A data. In this study, we investigated wide-area surface subsidence characteristics in Wuhan using 15 Sentinel-1A TOPS Synthetic Aperture Radar (SAR) images acquired from 11 April 2015 to 29 April 2016 with the Small Baseline Subset Interferometric SAR (SBAS InSAR) technique. The Sentinel-1A SBAS InSAR results were validated by 110 leveling points at an accuracy of 6 mm/year. Based on the verified SBAS InSAR results, prominent uneven subsidence patterns were identified in Wuhan. Specifically, annual average subsidence rates ranged from −82 mm/year to 18 mm/year in Wuhan, and maximum subsidence rate was detected in Houhu areas. Surface subsidence time series presented nonlinear subsidence with pronounced seasonal variations. Comparative analysis of surface subsidence and influencing factors (i.e., urban construction, precipitation, industrial development, carbonate karstification and water level changes in Yangtze River) indicated a relatively high spatial correlation between locations of subsidence bowl and those of engineering construction and industrial areas. Seasonal variations in subsidence were correlated with water level changes and precipitation. Surface subsidence in Wuhan was mainly attributed to anthropogenic activities, compressibility of soil layer, carbonate karstification, and groundwater overexploitation. Finally, the spatial-temporal characteristics of wide-area surface subsidence and the relationship between surface subsidence and influencing factors in Wuhan were determined.

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Section: Introductionmentioning

confidence: 99%

Wuhan Surface Subsidence Analysis in 2015–2016 Based on Sentinel-1A Data by SBAS-InSAR

et al. 2017

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“…The present study is based on an InSAR technique, in which the phase difference between two or more SAR (Synthetic Aperture Radar) images is used to detect surface undulations/deformations. The InSAR techniques are being developed since 1990s, and presently used for detecting surface undulations/deformations caused by earthquakes, tectonic activities, volcanic eruptions or hydrogeological fluctuations, as well as monitoring the dynamic phenomenon such as slope movements (e.g., Massonnet et al 1993;Romero et al 2002;Hooper et al 2004Hooper et al , 2007Chang et al 2004Chang et al , 2010Yen et al 2007Yen et al , 2011Yhokha et al 2015;Tuan et al 2016). Of the many different InSAR techniques, such as differential InSAR (DInSAR), permanent scatterer InSAR (PSI), small baseline (SB) InSAR, multi-temporal InSAR (MT-InSAR), etc., we have used the PSI, which is reasonably well suited for monitoring even the slowest surface/slope movements (e.g., Colesanti et al 2003Colesanti et al , 2006Cigna et al 2013;Tofani et al 2013;Oliveira et al 2015).…”

Section: Methodsmentioning

confidence: 99%

Application of Persistent Scatterer Interferometry (PSI) in monitoring slope movements in Nainital, Uttarakhand Lesser Himalaya, India

et al. 2018

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Orogenic movements and subtropical climate have rendered the slopes of the Himalayan region intensely deformed and weathered. As a result, the incidences of slope failure are quite common all along the Himalayan region. The Lesser Himalayan terrane is particularly vulnerable to mass-movements owing to geological fragility, and many parts of it are bearing a high-risk of associated disaster owing to the high population density. An important step towards mitigation of such disasters is the monitoring of slope movement. Towards this, the Persistent Scatterer Interferometry (PSI) technique can be applied. In the present study, the PSI technique is employed in Lesser Himalayan town of Nainital in Uttarakhand state of India to decipher and monitor slope movements. A total of 15 multi-date ENVISAT ASAR satellite images, acquired during August 2008 to August 2010 period, were subjected to PSI, which revealed a continuous creep movement along the hillslopes located towards the eastern side of the Nainital lake. The higher reaches of the hill seem to be experiencing accelerated creep of ∼21 mm/year, which decreases downslope to ∼5 mm/year. Based on spatial pattern of varying PSI Mean LOS Velocity (MLV) values, high (H), moderate (M), low (L) and very low (S) creeping zones have been delineated in the hillslopes. Given the long history of mass movements and continuously increasing anthropogenic activities in Nainital, these results call for immediate measures to avert any future disaster in the town.

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“…The new urbanization is responsible for subsidence bowls spread all over the Venice coastland, wherein several urban suburbs and industrial/commercial sites have grown rapidly by changing farmland use. The new buildings exert heavy loads on relatively recent coastal deposits and lead to consolidation of the shallow subsoil below their foundations [11,36].…”

Section: The Newly Built-up Areasmentioning

confidence: 99%

“…For example, in Tianjin and Shanghai, which are two coastal areas in China where land subsidence has seriously threatened the infrastructure efficiency, environment conservation, and population safety, TerraSAR-X-based interferometry was used to quantify land movements at the city scale [6,7] or along the tract of high-speed trains [8,9]. Other coastal cities where land subsidence has been recently mapped by TerraSAR-X images are Jakarta, Indonesia [10], Hanoi, Vietnam [11], and New Orleans, Louisiana [12]. SAR interferometry on TerraSAR-X acquisitions has also been applied in natural coastlands.…”

Section: Introductionmentioning

confidence: 99%

Land Subsidence in Coastal Environments: Knowledge Advance in the Venice Coastland by TerraSAR-X PSI

et al. 2018

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The use of satellite SAR interferometric methods has significantly improved the monitoring of ground movements over the last decades, thus opening new possibilities for a more accurate interpretation of land subsidence and its driving mechanisms. TerraSAR-X has been extensively used to study land subsidence in the Venice Lagoon, Italy, with the aim of quantifying the natural and anthropogenic causes. In this paper, we review and update the main results achieved by three research projects supported by DLR AOs (German Aerospace Center Announcement of Opportunity) and conducted to test the capability of TerraSAR-X PSI (Persistent Scatterer Interferometry) to detect ground movements in the complex physiographic setting of the Venice transitional coastal environment. The investigations have been focused on the historical center of Venice, the lagoon inlets where the MoSE is under construction, salt marshes, and newly built-up areas in the littoral. PSI on stacks of stripmap TerraSAR-X images covering short- to long-time periods (i.e., the years 2008–2009, 2008–2011 and 2008–2013) has proven particularly effective to measure land subsidence in the Venice coastland. The very high spatial resolution (3 m) and the short repeat time interval (11 days) of the TerraSAR-X acquisitions make it possible to investigate ground movements with a detail unavailable in the past. The interferometric products, properly calibrated, allowed for a millimetric vertical accuracy of the land movements at both the regional and local scales, even for short-term analyses, i.e., spanning one year only. The new picture of the land movement resulted from processing TerraSAR-X images has significantly contributed to update the knowledge on the subsidence process at the Venice coast.

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TerraSAR-X Data for High-Precision Land Subsidence Monitoring: A Case Study in the Historical Centre of Hanoi, Vietnam

Cited by 28 publications

References 27 publications

Wuhan Surface Subsidence Analysis in 2015–2016 Based on Sentinel-1A Data by SBAS-InSAR

Wuhan Surface Subsidence Analysis in 2015–2016 Based on Sentinel-1A Data by SBAS-InSAR

Application of Persistent Scatterer Interferometry (PSI) in monitoring slope movements in Nainital, Uttarakhand Lesser Himalaya, India

Land Subsidence in Coastal Environments: Knowledge Advance in the Venice Coastland by TerraSAR-X PSI

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