Spatiotemporal characteristics analysis of ground subsidence in Wuhan based on SBAS-InSAR
نویسندگان
چکیده
Abstract Aiming at the problem of uneven ground subsidence in Wuhan, using Sentinel-1A SAR image data 36 scenes from July 2017 to June 2020, SBAS-InSAR was used extract information Wuhan. Influence factors such as urban construction, industrial development, rainfall, and carbonate karstification on subsidence. The results show that can effectively monitor There is a high correlation between seasonal changes, time series shows nonlinear downward trend with changes. Human activities have serious impact subsidence, spatial distribution funnel area closely related geographical location area. Among natural factors, rainfall plays dominant role component has greater along river. two influencing jointly caused experimental provide certain reference for follow-up early warning construction planning
منابع مشابه
Wuhan Surface Subsidence Analysis in 2015-2016 Based on Sentinel-1A Data by SBAS-InSAR
The Terrain Observation with Progressive Scans (TOPS) acquisition mode of Sentinel-1A provides a wide coverage per acquisition and features a repeat cycle of 12 days, making this acquisition mode attractive for surface subsidence monitoring. A few studies have analyzed wide-coverage surface subsidence of Wuhan based on Sentinel-1A data. In this study, we investigated wide-area surface subsidenc...
متن کاملSpatiotemporal Characterization of Land Subsidence and Uplift (2009-2010) over Wuhan in Central China Revealed by TerraSAR-X InSAR Analysis
The effects of ground deformation pose a significant geo-hazard to the environment and infrastructure in Wuhan, the most populous city in Central China, in the eastern Jianghan Plain at the intersection of the Yangtze and Han rivers. Prior to this study, however, rates and patterns of region-wide ground deformation in Wuhan were little known. Here we employ multi-temporal SAR interferometry to ...
متن کاملA Comparison of Sbas and Ps Ers Insar for Subsidence Monitoring in Oslo, Norway
In this paper, we present the results achieved in the long-term subsidence project in Norway, ESA AO-1104, which have made use of ERS SAR data. By applying the differential SAR interferometry technique referred to as Small Baseline Subset (SBAS) approach to a test area covering the city of Oslo, Norway, we show significant subsidence in several areas of more than 5 mm/year in the time period 19...
متن کاملGround subsidence geo-hazards induced by rapid urbanization: implications from InSAR observation and geological analysis
Due to the convenient transportation and construction, cities are prone to be situated in areas with flat terrain and unstable sediments, resulting in the concurrence of ground subsidence and urbanization. Here the interaction between geology, anthropogenic processes and ground subsidence geo-hazards were investigated in the Greater Pearl River Delta region of China. Geological evidences and 20...
متن کاملApplication of InSAR and GIS Techniques to Ground Subsidence Assessment in the Nobi Plain, Central Japan
Spatial variation and temporal changes in ground subsidence over the Nobi Plain, Central Japan, are assessed using GIS techniques and ground level measurements data taken over this area since the 1970s. Notwithstanding the general slowing trend observed in ground subsidence over the plains, we have detected ground rise at some locations, more likely due to the ground expansion because of recove...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IOP conference series
سال: 2022
ISSN: ['1757-899X', '1757-8981']
DOI: https://doi.org/10.1088/1755-1315/1087/1/012045