Chronological reflection on monitoring urban areas subsidence due to groundwater extraction

Radutu, Alina; Gogu, Radu Constantin

doi:10.1051/e3sconf/20198507015

Cited by 4 publications

(3 citation statements)

References 27 publications

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“…Remotely sensed satellite images are being widely used to analyze the impact of anthropological activities on the natural landscape, analyze urban footprints on the environment, quantify climatic variability, and provide suitable urban and regional planning processes [4]. Various studies used various multi-resolution satellite images for the chronological evolution and development of a city [5,6], the characterization of essential urban landscape attributes [7], urban heterogeneity [8], and other parameters of changing human-environment relationships in spatio-temporal contexts [9,10].…”

Section: Introductionmentioning

confidence: 99%

Measuring Vertical Urban Growth of Patna Urban Agglomeration Using Persistent Scatterer Interferometry SAR (PSInSAR) Remote Sensing

2023

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In the present study, the vertical and horizontal growth of Patna Urban Agglomeration was evaluated using the Persistent Scatterer Interferometry Synthetic Aperture Radar (PSInSAR) technique during 2015–2018. The vertical urban growth assessment of the city landscape was assessed using microwave time series (30 temporal) datasets of Single Look Complex (SLC) Sentinel-1A interferometric Synthetic Aperture Radar using SARPROZ software (ver. 2020). This study demonstrated that peripheral city regions experienced higher vertical growth (~4 m year−1) compared to the city core regions, owing to higher urban development opportunities leading to significant land use alterations, the development of high-rise buildings, and infrastructural development. While the city core of Patna observed an infill and densification process, as it was already saturated and highly densified. The rapidly urbanizing city in the developing region witnessed a considerable horizontal urban expansion as estimated through the normalized difference index for built-up areas (NDIB) and speckle divergence (SD) using optical Sentinel 2A and microwave Sentinel-1A ground range detected (GRD) satellite data, respectively. The speckle divergence-based method exhibited high urban growth (net growth of 11.28 km2) with moderate urban infill during 2015–2018 and reported a higher accuracy as compared to NDIB. This study highlights the application of SAR remote sensing for precise urban area delineation and temporal monitoring of urban growth considering horizontal and vertical expansion through processing a long series of InSAR datasets that provide valuable information for informed decision-making and support the development of sustainable and resilient cities.

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Section: Introductionmentioning

confidence: 99%

Measuring Vertical Urban Growth of Patna Urban Agglomeration Using Persistent Scatterer Interferometry SAR (PSInSAR) Remote Sensing

2023

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“…Consequently, the identification of the vulnerable areas in the city, prone to subsidence, can be of great support for sustainable urban planning [6]. Monitoring of vulnerable large urban areas for ground displacements was not possible until recent decades, as the available methods consisted of punctual in-situ measurements, implying a heavy demand of equipment, time, and human resources [26][27][28]. Space-borne remote sensing techniques, and more specifically the Synthetic Aperture Radar Interferometry (InSAR) techniques, made possible regional land monitoring, allowing the identification of new unknown areas susceptible of land subsidence [27].…”

Section: Introductionmentioning

confidence: 99%

“…Space-borne remote sensing techniques, and more specifically the Synthetic Aperture Radar Interferometry (InSAR) techniques, made possible regional land monitoring, allowing the identification of new unknown areas susceptible of land subsidence [27]. The best monitoring solutions are considering the combination between monitoring techniques and complementary data characterizing the studied area [28]. Thus, different monitoring combinations were set up for characterizing natural and anthropic land subsidence worldwide [3,18,19,25].…”

Section: Introductionmentioning

confidence: 99%

Sentinel-1 Data for Underground Processes Recognition in Bucharest City, Romania

et al. 2020

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Urban areas are strongly influenced by the different processes affecting the underground and implicitly the terrestrial surface. Land subsidence can be one of the effects of the urban processes. The identification of the vulnerable areas of the city, prone to subsidence, can be of great help for a sustainable urban planning. Using Sentinel-1 data, by the PSI (persistent scatterer interferometry) technique, a vertical displacements map of Bucharest city has been prepared. It covers the time interval 2014–2018. Based on this map, several subsidence areas have been identified. One of them, holding a thick layer of debris from urban constructions, was analyzed in detail, on the basis of an accurate local geological model and by correlating the local displacements with the urban groundwater system hydraulic heads. The properties of the anthropogenic layer have been characterized by complementary geotechnical and hydrogeological studies. A dynamic instability pattern, highlighted by PSI results, has been put into evidence when related to this type of anthropogenic layer. This thick anthropogenic layer and its connections to the urban aquifer system have to be further analyzed, when the procedures of urban planning and design invoke constructive operations modifying the aquifer dynamics.

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Review on the Use of Satellite-Based Radar Interferometry for Monitoring Mining Subsidence in Urban Areas and Demographic Indicators Assessment

Radutu

Vlad-Sandru

2023

Mining Revue

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Mining activities represent one of the main causes leading to subsidence in the natural and urban environment. Sustainable urban planning and detection of potential hazards in mining areas involve the use of adequate instruments such as the continuous monitoring of land subsidence. The complexity of urban environment demands the utilization of new methods for monitoring and quantifying the effects of the mining processes. In the last decades, considering the technological developments from the remote sensing domain, the Synthetic Aperture Radar Interferometry (InSAR) techniques offer the opportunity for early detection and continuous monitoring of subsidence in mining areas, including urban centers. Considering various parameters of mining subsidence monitoring, a review of several tens of studies realized in different mining sites, based on InSAR techniques, is presented. As mining subsidence in urban areas has a direct impact on the quality of life, the review is completed with demographic indicators assessment, followed by a study case on the dynamics of the population in an urban mining area from Romania, Ocnele Mari.

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Chronological reflection on monitoring urban areas subsidence due to groundwater extraction

Cited by 4 publications

References 27 publications

Measuring Vertical Urban Growth of Patna Urban Agglomeration Using Persistent Scatterer Interferometry SAR (PSInSAR) Remote Sensing

Measuring Vertical Urban Growth of Patna Urban Agglomeration Using Persistent Scatterer Interferometry SAR (PSInSAR) Remote Sensing

Sentinel-1 Data for Underground Processes Recognition in Bucharest City, Romania

Review on the Use of Satellite-Based Radar Interferometry for Monitoring Mining Subsidence in Urban Areas and Demographic Indicators Assessment

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