Monitoring of land subsidence and ground fissures in Xian, China 2005–2006: mapped by SAR interferometry

A combined multi-interferogram algorithm for high resolution DEM reconstruction over deformed regions with TerraSAR-X data

“…Fig. 2 is the shaded relief map of SRTM DEM with 90 m ground resolution, where the range of height is between 350 m and 1450 m. Xi'an region has been suffering from serious ground subsidence and ground fissure hazards (Zhao et al, 2009). In order to reconstruct the DEM over Xi'an urban regions and surrounding mountainous regions, and to reduce the computation burden, we select a relative small section (the black rectangular in Fig.…”

“…The deformation effect cannot be neglected if the study region is suffering from deformation during the SAR data acquisitions (Lu et al, 2003). Our study area, the city of Xi'an, China has been suffering from serious surface deformation and ground fissures (Zhao et al, 2009), which has to be estimated and removed from interferograms used for DEM generation. For example, deformation phase can be achieved with short baseline subsets (SBAS) algorithm (Berardino et al, 2002;Zhao et al, 2011), and can be treated as a known information during the DEM calculation.…”

ALOS/PALSAR Image Processing Using Dinsar and Log Ratio for Flood Early Detection in Jakarta Based on Land Subsidences

“…LS phenomenon can be viewed as one factor and also a parameter indication of flooding in a specific region. LS has been investigated from SAR (Synthetic Aperture Radar) data using Interferometry Approach (InSAR) in China [2], in mountain slopes [3] and geothermal field [4], while Permanent Scatter (PS) InSAR is applied in [5][6]. Investigation the correlation LS to high waterpumping rate is reported in [7][8].…”

IGCP 641 Project: Mechanisms, Monitoring and Modeling Earth Fissure Generation and Fault Activation due to Subsurface Fluid Exploitation

“…The occurrence of ground ruptures due to deformation of aquifer systems accompanying groundwater pumping has been observed in many semiarid-to-arid sedimentary basins worldwide. Examples documented in the scientific literature include: Mexico (e.g., Carreón-Freyre et al, 2005, 2010Pacheco et al, 2006;Carreón-Freyre et al 2016;Teatini et al 2018;Ochoa-Gonzalez et al, 2018), southwest USA (e.g., Holzer et al, 1979Holzer and Galloway, 2005;Conway, 2016), China (e.g., Li et al, 2000;Zhao et al, 2009;Wang et al, 2009;Peng et al 2016;Zhang et al 2016;Ye et al 2018), India (Srivastava, 2009), Iran (Azat andShaharam, 2010), Saudi Arabia (Bankher and Al-Harthi, 1999), Libya (Rothenburg et al, 1995), and Pakistan (Kakar et al, 2016). In these countries, fracture generation and fault activation have a strong impact on the development of urban settlements, industrial centers, agricultural and other economic activities.…”