Monitoring Differential Subsidence along the Beijing–Tianjin Intercity Railway with Multiband SAR Data

Shi, Min; Chen, Beibei; Gong, Huili; Li, Xiaojuan; Chen, Wenfeng; Gao, Mengtan; Zhou, Chaofan; Lei, Kunchao

doi:10.3390/ijerph16224453

Cited by 12 publications

(10 citation statements)

References 32 publications

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“…The Expectation (Ex) and Entropy (En) methods were proposed in the cloud model, which represents the center of gravity of the cloud and the measure of the fuzziness of the concept, respectively [40,41]. For land subsidence research, Ex and En can be used to represent the overall level and the degree of non-uniformity land subsidence, respectively [42,43]. The high value of Ex means more significant land subsidence, and the high value of En represents more serious inhomogeneity of land subsidence.…”

Section: Expectation and Entropy Methodsmentioning

confidence: 99%

“…In previous studies [42,43], the Expectation and Entropy methods have been used to characterize the spatiotemporal difference of the displacement along subway and railway. In this paper, the Expectation and Entropy methods were used to analyze the overall level and the degree of non-uniform land subsidence in different land use types.…”

Section: Expectation and Entropy Methodsmentioning

confidence: 99%

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Evaluating Potential Ground Subsidence Geo-Hazard of Xiamen Xiang’an New Airport on Reclaimed Land by SAR Interferometry

et al. 2020

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The land reclaimed from the seaside may have a long-term subsidence trend, which poses a potential geohazard in the future land use. Xiamen Xiang’an New Airport (XXNA) is built on reclaimed land since 2016. Based on the spaceborne Sentinel-1 data between January 2018 to April 2019 and the time series interferometric synthetic aperture radar (InSAR) technique, this paper analyzed the reclaimed land subsidence evolution at XXNA in this period. InSAR measurements show that XXNA is suffering from severe subsidence, mainly in three regions because of the earth and sand compacting. By analyzing the spatial subsidence characterizations of the main subsiding areas combined with historical land reclamation and future land use planning, we find the potential threat of subsidence to future land use. Correlation between subsidence and the period of reclamation was found, indicating that the consolidation and compression in dredger fill is the main cause of subsidence. By combining subsidence monitoring results with different land use types and adopting the Expectation (Ex) and Entropy (En) methods, we analyzed the key area with potential subsidence geo-hazard. This work shows that with SAR interferometry, it is possible to find the large area ground subsidence in the airport reclaimed area. The areas with potential subsidence geo-hazards are consistent with the deep reclaimed earth, which means high subsidence risk in the future.

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Section: Expectation and Entropy Methodsmentioning

confidence: 99%

Section: Expectation and Entropy Methodsmentioning

confidence: 99%

Evaluating Potential Ground Subsidence Geo-Hazard of Xiamen Xiang’an New Airport on Reclaimed Land by SAR Interferometry

et al. 2020

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“…At the same time, Beijing has the largest number of highway overpasses in China. Previous research has mostly focused on regional land subsidence monitoring in Beijing [16][17][18]. Few studies have been conducted on characterizing deformation of transportation lines.…”

Section: Introductionmentioning

confidence: 99%

Detection of Seasonal Deformation of Highway Overpasses Using the PS-InSAR Technique: A Case Study in Beijing Urban Area

Lyu

et al. 2020

Remote Sensing

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In urban areas, deformation of transportation infrastructures may lead to serious safety accidents. Timely and accurate monitoring of the structural deformation is critical for prevention of transportation accidents and assurance of construction quality, particularly in areas with regional land subsidence, such as the city of Beijing. In this study, we proposed a method for the detection of seasonal deformation of highway overpasses using the integration of persistent scatterers Interferometric Synthetic Aperture Radar (PS-InSAR) techniques and seasonal indices, i.e., deformation concentration degree (DCD) and deformation concentration period (DCP) indices. Taking eastern Beijing urban area as a case study area, we first used the PS-InSAR technique to derive time series surface deformation based on 55 TerraSAR-X images during 2010–2016. Then, we proposed DCD and DCP indices to characterize seasonal deformation of 25 highway overpasses in the study area, with DCD representing to what degree the annual deformation is distributed in a year, and DCP representing the period on which deformation concentrates in the year. Our results showed that the maximum annual deformation rate reached −141.3 mm/year in Beijing urban area, and the PS-InSAR measurements agreed well with levelling measurements (R2 > 0.97). For PS pixels with DCD ≥ 0.3, the monthly deformation showed obvious seasonal patterns with deformation values during some months greater than those during the other months. DCP revealed that the settlement during autumn and winter was more serious than that in spring and summer. The seasonal patterns seemed to be related to the location, structure, and construction age of the overpasses. The upper-level overpasses, the newly constructed overpasses, and those located in the subsidence area (rate < −40 mm/year) tended to show a greater seasonal pattern. The seasonal deformation variations were also affected by groundwater-level fluctuation, temperature, and compressible layer.

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“…Luo et al proved that the Interferometric coherence of X-band SAR data can be well maintained in the monitoring of BTIR [17]. Shi et al analyzed the ground subsidence differences on both sides of the railway by TerraSAR-X data [18]. Zhao et al found that the extraction of groundwater began to slow, but the ground subsidence of the BTIR has not slowed [19].…”

Section: Introductionmentioning

confidence: 99%

Using TerraSAR X-Band and Sentinel-1 C-Band SAR Interferometry for Deformation Along Beijing-Tianjin Intercity Railway Analysis

Wang

Bai

Zhang

et al. 2021

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

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Abstract-The Beijing-Tianjin Intercity Railway (BTIR) is an important transportation hub connecting Beijing and Tianjin. It is the China's first high-speed railway reaching a speed of three hundred and fifty kilometers per hour and has been in operation for ten years. Since the foundation of the BTIR is made up of soft and loose soil, hence suffers greatly from potential deformation. In order to investigate the impact of ground subsidence on the railway line, twenty-six TerraSAR-X SpotLight (TSX SL) images, twenty-three TerraSAR-X StripMap (TSX SM) images and thirtyone Sentinel-1 Interferometric Wide (S1 IW) images were processed to obtain the deformation of the Yizhuang areas along the BTIR from January 2015 to March 2017 by Permanent Scatterers Interferometric Synthetic Aperture Radar (PS-InSAR) technology. The deformation results of these three datasets are self-consistent. Through the vertical and horizontal deformation of the railway using fusion of the railway deformation results from different LOS (line of sight) direction, we found that the deformation of the railway line is mainly in the vertical direction. Furthermore, the high precision spatial-temporal evolution of the deformation along the BTIR is revealed. Finally, the advantages and limitations of different SAR resolution are analyzed and summarized.

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Monitoring Differential Subsidence along the Beijing–Tianjin Intercity Railway with Multiband SAR Data

Cited by 12 publications

References 32 publications

Evaluating Potential Ground Subsidence Geo-Hazard of Xiamen Xiang’an New Airport on Reclaimed Land by SAR Interferometry

Evaluating Potential Ground Subsidence Geo-Hazard of Xiamen Xiang’an New Airport on Reclaimed Land by SAR Interferometry

Detection of Seasonal Deformation of Highway Overpasses Using the PS-InSAR Technique: A Case Study in Beijing Urban Area

Using TerraSAR X-Band and Sentinel-1 C-Band SAR Interferometry for Deformation Along Beijing-Tianjin Intercity Railway Analysis

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