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Showing 1 to 20 of 72 for “"InSAR"”.
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A framework for comparing geomechanical models of InSAR-measured surface deformation
… Interferometric Synthetic Aperture Radar (InSAR) surface deformation data for field sites around the world has become widely available over the past decade. Geomechanical models based on InSAR data occur frequently in the literature but few methods of systematically optimizing or comparing …
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Global investigation of large earthquakes using InSAR and long-period seismic data
… the first comprehensive global archive of InSAR-determined source models (ICMT database) compiled from the literature, which I use to independently assess source parameters reported in global and regional seismic catalogues. In general there is good agreement between InSAR and seismic …
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Surface deformation analysis over a hydrocarbon reservoir using InSAR with ALOS-PALSAR data
InSAR has been developed to estimate the temporal change on the surface of Earth by combining multiple SAR images acquired over the same area at different times. In the last two decades, in addition to conventional InSAR, numerous multiple acquisition InSAR techniques have been introduced, …
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Crustal deformation source monitoring using advanced InSAR time series and time dependent inverse modeling
… to reduce the limitations of conventional InSAR, by combining the benefits of advanced InSAR methods such as the permanent scatterer InSAR (PSI) and the small baseline subsets (SBAS) with a wavelet based data filtering scheme. This novel InSAR time series methodology is applied, for …
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An investigation of complex deformation patterns detected by using InSAR at Llaima and Tendürek volcanoes
… using synthetic aperture radar interferometry (InSAR). Through modeling of the deformation sources with the extracted displacement data, it was possible to gain insights into potential subsurface processes occurring at these two volcanoes that had been barely studied before. The two volcanoes, …
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FUSING GEDI LIDAR AND TANDEM-X INSAR OBSERVATIONS FOR IMPROVED FOREST STRUCTURE AND BIOMASS MAPPING
… (TDX)) Interferometric Synthetic Aperture Radar (InSAR) mission. To meet the goal of mapping forest structure and biomass contiguously and accurately, three types of fusion strategies have been investigated. First, a simulated GEDI-derived digital terrain model (DTM) was utilized to improve height …
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Predictive Modeling Of Sinkhole Hazards Using Synthetic Aperture Radar Interferometry (Insar) Subsidence Measurements And Local Geology
The mining of salt domes provides economically important resources through salt and brine production and storage of petroleum products as part of the U.S. Strategic Petroleum Reserve. In order to assess the risk to nearby communities for potential of salt dome collapse, it is important to …
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Comparison of Finite Element Methods and Satellite InSAR for Monitoring Deformations of a Large Tailings Dam
… a case study that investigates the accuracy of InSAR measurements and the predictive capabilities of finite element models using ground truth surface and sub-surface monitoring data applied to the Zelazny Most (SW Poland) copper tailings storage facility. This site has a well-documented history …
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InSAR time series analysis and machine learning for ground subsidence monitoring and susceptibility mapping in Midvaal, South Africa
… Interferometric Synthetic Aperture Radar (InSAR) time series analysis with Machine Learning (ML) techniques to monitor ground subsidence and develop ground subsidence susceptibility maps for Midvaal, South Africa. The key research objectives included evaluating the effects of various InSAR …
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Quantifying high-resolution hydrologic parameters at the basin scale using InSAR and inverse modeling, Las Vegas Valley, NV
… new model is calibrated using high-resolution InSAR data and hydraulic head data from 1912 to 2010. The calibrated model is used to investigate the influence of faults and their potential role on influencing clay thicknesses and land subsidence distributions, and to investigate future trends of …
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Observing Drought-Induced Crustal Loading Deformation Around Lake Mead Region via GNSS and InSAR: A Comparison With Elastic Loading Models
… via Interferometric Synthetic Aperture Radar (InSAR) technology. In this study, I analyze vertical deformation observations from GNSS sites and multi-temporal InSAR analysis of Sentinel-1A/B to investigate the contribution of water mass changes in lake, soil, and groundwater to the deformation …
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Advancements in Satellite SAR Methods for Monitoring Civil Infrastructure
… contact-type sensors. Whilst SAR interferometry (InSAR) is widely used for land monitoring, its application to bridge monitoring is still constrained by important limitations of the technique. Moreover, the use of SAR imagery for vibration-based structural health monitoring (VBSHM) remains largely …
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Interferometric Synthetic Aperture Radar for remote satellite monitoring of bridges
… of Interferometric Synthetic Aperture Radar (InSAR) monitoring using satellite radar imagery focusses on widespread measurement of land areas, although there have been some case studies using InSAR to assess movements of individual structures such as dams. However, there is limited published …
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Landslide kinematics and interactions studied in central Georgia by using synthetic aperture radar interferometry, optical imagery and inverse modeling
… interferometric synthetic aperture radar (InSAR) methods. The slow landslides (several cm per year) are well detectable with two-pass interferometry. In same time, the extremely slow landslides (several mm per year) could be detected only with time series InSAR techniques. I exemplify the …
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Volcano deformation analysis in the Lazufre area (central Andes) using geodetic and geological observations
… recently detected by radar interferometry (InSAR) provides new information and thus new scientific challenges for understanding volcano-tectonic activity and magmatic systems. The destabilization of such a system at depth noticeably affects the surrounding environment through magma …
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Improved reservoir characterization by incorporating geodetic data in a western Kazakhstan oilfield
… modern Interferometric Synthetic Aperture Radar (InSAR) geodetic data to better inform model assumptions. Surface deformation measurement by InSAR is used to provide subsurface insights using as an example the "Polygon" field in Kazakhstan. This workflow leads to several key conclusions which …
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A Geophysical Survey Of Active Volcanism In The Central And Southern Andes
… Miocene (10-1 Ma). In this dissertation, I use InSAR (interferometric synthetic aperture radar), thermal remote sensing, and seismology to investigate active volcanism in the Central and Southern Andes. InSAR and thermal remote sensing provide synoptic coverage along the volcanic arc, and …
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Three applications of satellite borne repeat pass SAR interferometry in Southern Africa
Synthetic Aperture Rada Interferometry (InSAR) is a relatively new remote sensing technique, which can be used to derive precise topographic height change information over large areas. It is a technique which has been used in a great variety of situations, from the topographic mapping of Venus to …
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Analysis of interferometric SAR for topographic mapping
… using interferometry synthetic aperture radar (InSAR). The procedure uses the difference of phase measurements of the received radar signals at two antennas separated slightly in the cross-track direction, to determine the elevations more accurately than stereo SAR mapping, which uses SAR …
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