Wei Tang

Wei Tang
China University of Mining & Technology Beijing · College of Geoscience and Surveying Engineering

Doctor of Philosophy

About

14
Publications
4,390
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82
Citations
Introduction
Wei Tang currently works at the College of Geoscience and Surveying Engineering, China University of Mining & Technology, Beijing. Wei does research in Civil Engineering. Their current project is 'Comparison of Mining Subsidence Research in China and Poland'.

Publications

Publications (14)
Article
Full-text available
Atmospheric propagation delay correction is the key to improving the accuracy of deformation measurement of satellite interferometric synthetic aperture radar (InSAR). The empirical phase-elevation models and external data-based models present uneven performances of atmospheric delay correction for InSAR deformation monitoring. In this study, based...
Article
The freshwater scarcity and sustainability of overexploited aquifers have been recognized as a big threat to global water security for human development. Consequently, much research has focused in the past on negative consequences of groundwater abstraction, but somewhat less has been documented about the impacts of adequate management practices to...
Article
Full-text available
The Tianjin coastal region in Bohai Bay, Northern China, is increasingly affected by storm-surge flooding which is exacerbated by anthropogenic land subsidence and global sea-level rise (SLR). We use a combination of InSAR (Synthetic Aperture Radar Interferometry), CGPS (continuous GPS), and tide-gauge observations to evaluate the spatial variabili...
Article
Full-text available
With the recent progress in synthetic aperture radar (SAR) technology, especially the new generation of SAR satellites (Sentinel-1 and TerraSAR-X), our ability to assess slope stability in open-pit mines has significantly improved. The main objective of this work is to map ground displacement and slope instability over three open-pit mines, namely,...
Article
Full-text available
Land subsidence in Changzhou City in the central Yangtze River Delta of China poses a serious threat to the safety of the environment and infrastructures. Excessive groundwater withdrawal, rapid urbanisation and industrial activities contribute to land subsidence in this area. In this study, we used the multi-temporal InSAR (MT-InSAR) technique to...
Article
Full-text available
Excessive groundwater exploitation is common through the Taiyuan basin, China, and is well known to result in ground subsidence. However, most ground subsidence studies in this region focus on a single place (Taiyuan city), and thus fail to demonstrate the regional extent of the deformation phenomena in the whole basin. In this study, we used Inter...
Article
Full-text available
Tropospheric delay caused by spatiotemporal variations in pressure, temperature, and humidity in the lower troposphere remains one of the major challenges in Interferometric Synthetic Aperture Radar (InSAR) deformation monitoring applications. Acquiring an acceptable level of accuracy (millimeter-level) for small amplitude surface displacement is d...
Article
Spatial and temporal variations in the pressure, temperature, and water vapor content in the atmosphere introduce significant tropospheric delay into interferometric synthetic aperture radar (InSAR) data, which is one of the main limitations in high precision InSAR applications. Recent studies have shown that global atmospheric reanalysis products...
Article
Full-text available
A high spatial and temporal resolution of the precipitable water vapour (PWV) in the atmosphere is a key requirement for the short-scale weather forecasting and climate research. The aim of this work is to derive temporally differenced maps of the spatial distribution of PWV by analysing the tropospheric delay "noise" in interferometric synthetic a...
Article
Full-text available
Spatial and temporal variations in the vertical stratification of the troposphere introduce significant propagation delays in interferometric synthetic aperture radar (InSAR) observations. Observations of small amplitude surface deformations and regional subsidence rates are plagued by tropospheric delays, and strongly correlated with topographic h...
Article
The dominant error source of Synthetic Aperture Radar Interferometry (InSAR) is atmospheric phase screen (APS), resulting in phase delay of the radar signal propagating through the atmosphere. The APS in the atmosphere can be decomposed into stratified and turbulent components. In this paper, we introduced a method to compensate for stratified comp...
Article
Full-text available
A high spatial resolution of the Precipitable Water Vapor (PW V) in the atmosphere is a key requirement for the short-scale weather forecasting and climate research. The aim of this work is to derive temporally-differenced maps of the spatial distribution of PWV by analyzing the atmospheric delay "noise" in Interferometric Synthetic Aperture Radar...
Article
C- and X-bands Synthetic Aperture Radar (SAR) images acquired from February 2009 to September 2010 were processed with Persistent Scatterer Interferometry (PS-InSAR) algorithm to investigate spatial and temporal variations in deformation over Taiyuan City, China. The spatial pattern of subsidence and the magnitude of subsidence rate are similar in...

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Projects

Project (1)
Project
Report 1 No. G2017001 is supported by China’s Belt and Road initiative. There are three main goals of the project: 1. To deepen the knowledge about research done on mining subsidence in China and Poland, 2. To develop a novel method for the damage risk assessment for the buildings/pipelines in China, 3. To apply InSAR for ground movements detection and to establish parameters of the models applied in order to predict ground deformation.