Monitoring of land surface subsidence using persistent scatterer interferometry techniques and ground truth data in arid and semi-arid regions, the case of Remah, UAE

Kamali, Muhagir El; Papoutsis, Ioannis; Loupasakis, Constantinos; Abuelgasim, Abdelgadir; Omari, Khalid; Kontoes, Charalampos

doi:10.1016/j.scitotenv.2021.145946

Cited by 17 publications

(15 citation statements)

References 34 publications

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“…Overexploitation of groundwater resources may result in compression of aquifer systems (aquifers and permeable aquifers), which causes rapid land subsidence [1]. Many major cities around the world are facing such geological disasters due to the excessive extraction of groundwater, such as central Mexico, Las Vegas in the USA, and the United Arab Emirates [2][3][4]. Moreover, ground subsidence disasters are often accompanied by the formation and development of ground fissures (GFs).…”

Section: Introductionmentioning

confidence: 99%

Monitoring of Land Subsidence and Ground Fissure Activity within the Su-Xi-Chang Area Based on Time-Series InSAR

Yang

Hou

et al. 2022

Remote Sensing

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Serious land subsidence and ground fissure (GF) disasters have brought huge economic losses to the Su-Xi-Chang area (China) and threatened the safety of its residents. To better understand the development of these disasters, it is urgent to carry out long-term and large-scale deformation monitoring in this region. In this study, based on time-series interferometric synthetic aperture radar (InSAR) technology, ground deformation characteristics were obtained at different periods. Meanwhile, Fast Lagrangian Analysis of Continua in Three Dimensions (FLAC3D) was used to study the stress, seepage field, and displacement changes in the soil layers caused by pumping activities at the bedrock bulge. The results showed that three subsidence centers were located in Suzhou, Wuxi, and Changzhou from 2007 to 2010. The ground fissures in Guangming village had obvious differential settlements and intense activities. The land subsidence in the Su-Xi-Chang area was under control from 2018 to 2021, while there was a relative rebound in most areas. Combined with numerical simulation and geological data, we demonstrated that pumping activities would accelerate and intensify the land subsidence process, and differential subsidence was prone to occur at the buried hill, which in turn led to the formation of ground fissures. By comparing the characteristics of ground deformation in different periods, it was proven that banning groundwater exploitation is an effective measure for preventing and controlling such disasters.

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Section: Introductionmentioning

confidence: 99%

Monitoring of Land Subsidence and Ground Fissure Activity within the Su-Xi-Chang Area Based on Time-Series InSAR

Yang

Hou

et al. 2022

Remote Sensing

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“…According to the survey in Refs. [40,41], the spatial distribution of the land deformation fits with the area affected by the overexploitation of the aquifers. Moreover, there is a strong positive relationship between the groundwater level drawdown in the wells and the land subsidence in the time series.…”

Section: Real Data Set: Sentinel-1mentioning

confidence: 79%

“…Abstracting groundwater leads to a depression of the groundwater surface around the well (the cone of depression). The map of groundwater level changes shows the groundwater level change from 2005 to 2017, which coincides with the agricultural areas [40,41]. At the test site, the groundwater level drops more than 14 m by monitoring the wells.…”

Section: Real Data Set: Sentinel-1mentioning

confidence: 98%

Bayesian Estimation of Land Deformation Combining Persistent and Distributed Scatterers

Ding

et al. 2022

Remote Sensing

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Persistent Scatterer Interferometry (PSI) has been widely used for monitoring land deformation in urban areas with millimeter accuracy. In natural terrain, combining persistent scatterers (PSs) and distributed scatterers (DSs) to jointly estimate deformation, such as SqueeSAR, can enhance PSI results for denser and better coverage. However, the phase quality of a large number of DSs is far inferior to that of PSs, which deteriorates the deformation measurement accuracy. To solve the contradiction between measurement accuracy and coverage, a Bayesian estimation method of land deformation combining PSs and DSs is proposed in this paper. First, a two-level network is introduced into the traditional PSI to deal with PSs and DSs. In the first-level network, the Maximum Likelihood Estimation (MLE) of deformation parameters at PSs and high-quality DSs is obtained accurately. In the secondary-level network, the remaining DSs are connected to the nearest PSs or high-quality DSs, and the deformation parameters are estimated by Maximum A Posteriori (MAP) based on Bayesian theory. Due to the poor phase quality of the remaining DSs, MAP can achieve better estimation results than the MLE based on the spatial correlation of the deformation field. Simulation and Sentinel-1A satellite data results verified the feasibility and reliability of the proposed method. Regularized by the spatial deformation field derived from the high-quality PSs and DSs, the proposed method is expected to achieve robust results even in low-coherence areas, such as rural areas, vegetation coverage areas, or deserts.

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“…Faced with the current two major environmental problems of "surface subsidence in mining areas" and "urban waste disposal", they have increasingly become huge obstacles hindering social and economic progress and the sustainable development of resources and environment (Muhagir et al 2021;Mohamed et al 2021;Emily et al 2020;Swiedler et al 2019). In view of the above two major environmental problems, some scholars have proposed a comprehensive environmental management method for back lling the goaf with solid waste, and analyzed the feasibility of the implementation of the method (Gaziev et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Technology and Performance Analysis of Preventing Surface Subsidence by Sealing and Backfilling the Goaf with Urban Waste

et al. 2021

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In order to solve the current two major environmental problems of urban waste pollution and surface subsidence above the coal mine goaf, the technology of sealing and back lling the goaf with urban waste is proposed. This technology takes "waste disposal" and "goaf back lling" as the design theme, and uses waste screening, processing, transportation, and back lling as the design links. Aiming at the processing of loose waste, the waste drying and briquetting integrated machine is designed, which comprehensively utilizes the methods of waste physical disposal and heat disposal to dehydrate and press the waste into a block with a particle size of 150mm, and nally pass the six-sided winding package. The entire processing technology ensures the strength of the waste materials and no ltrate. For the processing of solid aggregate waste, it is crushed into recycled concrete raw materials for goaf back lling. Aiming at the goaf back lling, the goaf back lling coal mining method is designed, the back lling hydraulic support is modi ed, and the back lling mechanism is added to realize the integration of "mining-back lling" in the working face. The back lling technology embodies the key issues of the sealing of the back lling space and the strength of the back lling body with third times of sealing strengthening. Using urban waste as the back lling materials for the goal area, the waste pollution and the surface subsidence are turned into "two bene ts", and the construction of waste-free cities and green mines is promoted.

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Monitoring of land surface subsidence using persistent scatterer interferometry techniques and ground truth data in arid and semi-arid regions, the case of Remah, UAE

Cited by 17 publications

References 34 publications

Monitoring of Land Subsidence and Ground Fissure Activity within the Su-Xi-Chang Area Based on Time-Series InSAR

Monitoring of Land Subsidence and Ground Fissure Activity within the Su-Xi-Chang Area Based on Time-Series InSAR

Bayesian Estimation of Land Deformation Combining Persistent and Distributed Scatterers

Technology and Performance Analysis of Preventing Surface Subsidence by Sealing and Backfilling the Goaf with Urban Waste

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