Article
Environmental Sciences
Alexander C. Amies, John R. Dymond, James D. Shepherd, David Pairman, Coby Hoogendoorn, Marmar Sabetizade, Stella E. Belliss
Summary: A national map of pasture productivity was developed using satellite imagery and pasture yield data, allowing evaluation of land-use suitability and stratification of grasslands. The model showed high predictive accuracy and was valuable for spatial analysis of regional aggregates, benefiting land use and environmental science.
Article
Engineering, Geological
Feihang Qu, Haijun Qiu, Hesheng Sun, Minggao Tang
Summary: This study explores the effectiveness of using Sentinel-2 optical images to detect post-landslide changes, revealing different stages of landslide changes. Through calculating NDVI and validating with UAV images, the study confirms the reflected change processes and constructs RGB composites representing different change periods.
Article
Environmental Sciences
Xiaojun Su, Yi Zhang, Xingmin Meng, Mohib Ur Rehman, Zainab Khalid, Dongxia Yue
Summary: Using SBAS-InSAR technology, this study detected ground surface deformation in the Hunza Valley and completed a comprehensive inventory of 118 landslides. The analysis of three large landslides revealed the characteristics and mechanisms of landslide development.
Article
Chemistry, Analytical
Huibao Huang, Shujun Ju, Wei Duan, Dejun Jiang, Zhiliang Gao, Heng Liu
Summary: This study successfully monitored landslides in the Dadu River Basin using InSAR technology, and extracted 143 potential landslide regions. It provides a reference for geological hazard surveys in mountainous areas.
Article
Environmental Sciences
Emil Bayramov, Manfred Buchroithner, Martin Kada, Askar Duisenbiyev, Yermukhan Zhuniskenov
Summary: This study quantitatively assessed the vertical displacement velocities in Tengiz oilfield using Sentinel-1 and Cosmo-SkyMed synthetic aperture radar images. The study found that the oilfield experienced continuous subsidence during 2018-2020, and identified hotspots of subsidence induced by oil extraction. The results showed that the measurements derived from the Sentinel-1 and COSMO-SkyMed images had a good statistical relationship and could effectively determine the vertical surface displacement processes in the study area.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Environmental Sciences
Zhuo Jiang, Chaoying Zhao, Ming Yan, Baohang Wang, Xiaojie Liu
Summary: Loess landslides are important geohazards in loess-covered areas. This study proposes an improved InSAR-based procedure for large-area landslide mapping and successfully detects and maps 50 potential loess landslides in Dingbian County, China. Among them, 8 landslides are classified as active ones. The research also provides data support for further studying the relationship between deformation, elevation, and rainfall related to loess landslides.
Article
Ecology
Kaifang Shi, Guifen Liu, Liang Zhou, Yuanzheng Cui, Shirao Liu, Yizhen Wu
Summary: The slope climbing of urban land expansion (SCUE) is a widespread phenomenon that poses challenges to sustainable urban development. This study quantified and evaluated the global SCUE from 2000 to 2018, showing an increase in average slope globally. The study also found that hills are a key area for SCUE and provided insights into the sustainability of hillside urbanization worldwide.
LANDSCAPE AND URBAN PLANNING
(2023)
Article
Environmental Sciences
Zhen Jiang, Zigui Wu, Ziyuan Li, Jun Hu, Yuwei Wu, Liye Ou, Tongyuan Zhang
Summary: This study quantitatively analyzed the behavior of the expansive soil slope in the canal section of the Middle Route of the South-to-North Water Diversion Project in Huixian City, China, using InSAR technology. The results showed that the slope deformations were small and mainly distributed along the canal slope, with a significant pattern of seasonal swelling and shrinkage. The slope movements accelerated during periods of extreme rainfall. The study also determined the depths of the active zones of the slope using a lag-time approach.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Environmental Sciences
Wandi Wang, Mahdi Motagh, Sara Mirzaee, Tao Li, Chao Zhou, Hui Tang, Sigrid Roessner
Summary: A catastrophic landslide occurred in Mazhe County, Hubei province, China on 21 July 2020. This study used multi-source remote sensing measurements to investigate the kinematic evolution and volumetric change related to this landslide. Different time-series techniques were applied to analyze C-band Sentinel-1 and X-band TerraSAR-X SAR data, and the spatial pattern of surface deformation was statistically analyzed to retrieve the pre-failure and post-failure displacements. The landslide was found to be active before the failure, and the disaster resulted in a significant collapse volume and potential expansion of the failure zone.
REMOTE SENSING OF ENVIRONMENT
(2023)
Article
Geosciences, Multidisciplinary
Changjun Huang, Qingshan Zhou, Lv Zhou, Yuanzhi Cao
Summary: The study proposes a Quasi-Persistent Scatterers InSAR (QPS-InSAR) time-series method to identify and monitor ancient landslides in Wanzhou District, providing valuable information for local government to conduct regular landslide inspections and enhance landslide disaster early warning mechanisms.
Article
Environmental Sciences
Emil Bayramov, Giulia Tessari, Martin Kada, Saida Aliyeva, Manfred Buchroithner
Summary: This study assessed differential vertical and horizontal deformations for the offshore Kashagan oilfield using SAR images and PS-InSAR technique. The results showed that the differential vertical deformation velocity was between -4 mm/y and 4 mm/y, while the differential horizontal deformation velocity was between -4 mm/y and 5 mm/y. Hotspots of differential vertical deformation were observed in the oilfield areas installed on piles. The study concluded that the Kashagan oilfield had not been significantly impacted by differential vertical and horizontal deformations.
Article
Environmental Sciences
Kuan Tu, Shirong Ye, Jingui Zou, Chen Hua, Jiming Guo
Summary: In this study, an integrated method combining interferometric synthetic aperture radar and high-resolution optical satellite remote sensing was developed to detect active landslides in the Upper Yellow River region. The results from two InSAR technologies showed a 97.08% overlap rate, confirming the suitability of both approaches. The slight deformation rate changes before and after rainy seasons indicated that precipitation had little impact on slope activity. This study supports the feasibility of integrated methods for detecting and analyzing active landslides in the Upper Yellow River and other regions.
Article
Environmental Sciences
Ziyun Wang, Jinhu Xu, Xuguo Shi, Jianing Wang, Wei Zhang, Bao Zhang
Summary: This study used Synthetic Aperture Radar Interferometry (InSAR) to map unstable slopes in the downstream of the Niulanjiang River. By comparing different datasets, it was found that the number of active slopes had significantly increased. The study also discussed various factors such as earthquakes, rainfall, and construction activities that can influence landslides, and identified a correlation between rainfall and landslide displacement using a climate-driven model.
Article
Computer Science, Information Systems
Nilufar Karimli, Mahmut Oguz Selbesoglu
Summary: This study investigated the limitations and capabilities of remote sensing data application in the field of planning Food Security, and used Sentinel 2 and Shuttle Radar Topography Mission (SRTM) data to estimate winter wheat yields with a high degree of accuracy (98.03%). This method makes it possible to predict the productivity of newly created crop fields without the need for regression models or field studies.
ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION
(2023)
Article
Engineering, Aerospace
Bingquan Li, Wenliang Jiang, Yongsheng Li, Yi Luo, Qisong Jiao, Qingyun Zhang
Summary: This study uses satellite remote sensing technology to monitor the movement of the Woda landslide in Yunnan in recent years and finds that the deformation of the landslide is closely related to precipitation.
ADVANCES IN SPACE RESEARCH
(2023)
Article
Multidisciplinary Sciences
Magdalena Vassileva, Djamil Al-Halbouni, Mahdi Motagh, Thomas R. Walter, Torsten Dahm, Hans-Ulrich Wetzel
Summary: Ground subsidence, whether caused by natural or anthropogenic processes, is a global issue affecting major urban areas worldwide. The case study in Maceio, Brazil, highlights the accelerated sinking rates and the primary association of extensive subsidence with the removal of deep-seated material at the location and depth where salt is mined. This research suggests that destabilization mechanisms in evaporite systems due to human activities can lead to enhanced and complex ground deformation.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Geological
Jiyuan Hu, Mahdi Motagh, Jiming Guo, Mahmud Haghshenas Haghighi, Tao Li, Fen Qin, Wenhao Wu
Summary: Through multitemporal interferometry analysis, four major subsidence zones in Wuhan, including both soft soil areas and karst terrain, were identified. The decline of shallow groundwater caused by engineering dewatering and industrial water depletion contributes to subsidence in the soft soil areas, while the presence of underground caves and fissures in the karst terrain is the main factor for gradual subsidence and karst collapse. The stage of karst development plays the most important role in influencing karst subsidence, followed by municipal construction, proximity to major rivers, and overlying soil structure.
ENGINEERING GEOLOGY
(2022)
Article
Remote Sensing
Vamshi Karanam, Mahdi Motagh, Shagun Garg, Kamal Jain
Summary: The study used satellite imagery to investigate the impact of coal fires on subsidence in the Jharia Coalfields in India. Results showed a strong positive correlation between subsidence velocity and temperature anomaly, with critically affected zones identified as Kusunda, Keshalpur, and Bararee collieries.
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
(2021)
Article
Environmental Sciences
Wei Tang, Xiangjun Zhao, Mahdi Motagh, Gang Bi, Jing Li, Mingjie Chen, Hua Chen, Mingsheng Liao
Summary: The impacts of groundwater management measures and inter-basin water transfer project on the aquifer system in Taiyuan basin, China, have been studied using integrated analysis. The research reveals that these measures have led to the alleviation of land subsidence, reduction in surface displacement, and significant seasonal displacement related to agricultural pumping irrigation.
REMOTE SENSING OF ENVIRONMENT
(2022)
Article
Multidisciplinary Sciences
Shagun Garg, Mahdi Motagh, J. Indu, Vamshi Karanam
Summary: This study investigates the effects of declining groundwater levels on land surface elevations in Delhi NCR, India. It identifies two subsidence areas with rates exceeding 11 cm/year and 3 cm/year, as well as one uplift area. It highlights a high-risk zone of ground movement covering approximately 100 square kilometers that requires urgent attention. The findings of this study are highly relevant for formulating new groundwater management policies in the region.
SCIENTIFIC REPORTS
(2022)
Article
Environmental Sciences
Mimi Peng, Zhong Lu, Chaoying Zhao, Mahdi Motagh, Lin Bai, Brian D. Conway, Hengyi Chen
Summary: This study utilized InSAR technology to investigate land subsidence in the Willcox Groundwater Basin, and employed independent component analysis to analyze the temporal patterns. Two different deformation features were identified in the basin. By integrating InSAR deformation data with groundwater level data, the response of the aquifer system to hydraulic head change was quantified, and the hydromechanical properties of the aquifer system were characterized.
REMOTE SENSING OF ENVIRONMENT
(2022)
Article
Environmental Sciences
Deying Ma, Mahdi Motagh, Guoxiang Liu, Rui Zhang, Xiaowen Wang, Bo Zhang, Wei Xiang, Bing Yu
Summary: The thaw consolidation of degrading permafrost poses a serious hazard to infrastructure. By integrating interferometric measurements from radar images and volumetric water content data, this study quantifies the spatial variations in active layer thickness in Iqaluit, Canada. The findings provide valuable insights for hazard prevention and infrastructure operation in permafrost regions.
Article
Environmental Sciences
Zohreh Erfani Jazi, Mahdi Motagh, Volker Klemann
Summary: Using InSAR measurements near the Helheim glacier in southeastern Greenland, a maximum cumulative displacement of approximately 6 cm was detected, suggesting a mass loss of 8.33 Gt/year in that area.
Article
Geography, Physical
Zhuge Xia, Mahdi Motagh, Tao Li, Mimi Peng, Sigrid Roessner
Summary: In this study, a framework combining satellite optical and SAR remote sensing techniques with ICA and mathematical relaxation model was proposed to assess the four-dimensional spatiotemporal patterns of post-failure slope evolution. The Aniangzhai landslide in Southwest China was comprehensively analyzed, and it was found that the most significant post-failure displacement occurred towards the west, amounting to 28 meters.
ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING
(2023)
Article
Environmental Sciences
Juanjuan Yu, Xiufeng He, Peng Yang, Mahdi Motagh, Jia Xu, Jiacheng Xiong
Summary: In this study, a novel combined framework that integrates UNet++ with a marker-controlled watershed segmentation strategy was developed to extract aquaculture boundaries from fully polarimetric GaoFen-3 SAR imagery. Experimental results showed that the proposed method could effectively handle the adhesion of adjacent objects and unclear boundaries, capturing clear and refined aquaculture boundaries.
Article
Environmental Sciences
Kamila Pawluszek-Filipiak, Andrzej Borkowski, Mahdi Motagh
Summary: This research utilized PSInSAR technology with satellite radar data to verify landslide activity in Malopolskie municipality, generating and validating landslide intensity and damage maps, with a high correlation between PSInSAR results and field observations confirmed.
REMOTE SENSING APPLICATIONS-SOCIETY AND ENVIRONMENT
(2021)
Article
Engineering, Electrical & Electronic
Binayak Ghosh, Mahdi Motagh, Mahmud Haghshenas Haghighi, Magdalena Stefanova Vassileva, Thomas R. Walter, Setareh Maghsudi
Summary: The study utilizes synthetic aperture radar acquisitions to detect ground deformations and volcanic unrest signals, and improves the accuracy and efficiency of real-time detection through unique algorithms. Results demonstrate the practicality and effectiveness of this method on different datasets.
IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
(2021)
Article
Engineering, Electrical & Electronic
Wei Tang, Wei Zhan, Bowen Jin, Mahdi Motagh, Yubin Xu
Summary: The Tianjin coastal region is increasingly affected by storm-surge flooding, exacerbated by anthropogenic land subsidence and global sea-level rise. Remote sensing and GPS observations show that while land subsidence in downtown Tianjin has decreased, it has increased in suburban areas, especially in reclaimed harbor zones. Additionally, in aquaculture zones along the coast, land subsidence due to groundwater extraction has led to local sea level rise significantly exceeding the global average.
IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
(2021)