Download or read book Improving Radar Interferometry for Monitoring Fault related Surface Deformation Applications for the Roer Valley Graben and Coal Mine Induced Displacements in the Southern Netherlands written by Miguel Caro Cuenca and published by . This book was released on 2012 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions written by Francesco Silvestri and published by CRC Press. This book was released on 2019-07-19 with total page 8083 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions contains invited, keynote and theme lectures and regular papers presented at the 7th International Conference on Earthquake Geotechnical Engineering (Rome, Italy, 17-20 June 2019. The contributions deal with recent developments and advancements as well as case histories, field monitoring, experimental characterization, physical and analytical modelling, and applications related to the variety of environmental phenomena induced by earthquakes in soils and their effects on engineered systems interacting with them. The book is divided in the sections below: Invited papers Keynote papers Theme lectures Special Session on Large Scale Testing Special Session on Liquefact Projects Special Session on Lessons learned from recent earthquakes Special Session on the Central Italy earthquake Regular papers Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions provides a significant up-to-date collection of recent experiences and developments, and aims at engineers, geologists and seismologists, consultants, public and private contractors, local national and international authorities, and to all those involved in research and practice related to Earthquake Geotechnical Engineering.
Download or read book Monitoring Surface Deformation Induced by Hydrocarbon Production Using Satellite Radar Interferometry written by Virginia Bernardina Hendrika Ketelaar and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Deformation Monitoring Using Scanning Synthetic Aperture Radar Interferometry written by Krishna Vikas Gudipati and published by . This book was released on 2009 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation provides the first demonstration of scanning synthetic aperture radar (ScanSAR) advanced interferometry processing for measuring surface deformation. ScanSAR data are synthesized from ERS-1/2 stripmap SAR images over known deformation in Phoenix, Arizona. The strategy is to construct a burst pattern similar to Envisat ScanSAR data and to create a realistic variable-burst synchronization scenario in which any image pair has at least 50% burst overlap. The Small Baseline Subsets technique is applied to the synthesized data to demonstrate ScanSAR time series analysis for a scenario generally conducive for interferometry. The same processing approach is employed with the stripmap data to validate the results. The differences in ScanSAR and stripmap velocities have a mean and standard deviation of 0.02"0.02 cm/year. 96.3% and 99.1% of the velocity differences are within "0.1 cm/year and "0.2 cm/year, respectively. The RMS deviations between the ScanSAR and stripmap displacement estimates are 0.40"0.30 cm. 68.5% and 94.6% of the differences are within "0.5 cm and "1.0 cm, respectively. The Permanent Scatterer (PS) technique also is adapted and applied to the synthesized data to demonstrate the presence of PS in ScanSAR data. The atmospheric and nonlinear motion phase derived from a PS analysis of stripmap data are removed from the ScanSAR interferograms. Even for this idealized scenario, the final PS identification yields fewer ScanSAR PS (10 PS/km2) than the stripmap PS results (312 PS/km2 or 15.6 PS/km2 at the ScanSAR pixel resolution). Based on the calculated likelihood of finding multiple stripmap PS within a ScanSAR pixel, it is concluded that the ScanSAR single scatterer PS model is flawed. A model is introduced that considers multiple PS within a ScanSAR pixel. The search for two PS per pixel yields 120 PS/km2. The ScanSAR and stripmap PS velocity differences mean is zero and standard deviation is 0.02 cm/year. However, while the differences between the ScanSAR and stripmap PS DEM error estimates are zero-mean, they have a 7-meter standard deviation. One possible explanation for this relatively large deviation is the differencing of the wrong ScanSAR and stripmap PS as the result of a misalignment between the ScanSAR and stripmap images.
Download or read book Radar Interferometry written by Bert M. Kampes and published by Springer. This book was released on 2009-09-03 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is devoted to the Persistent Scatterer Technique, the latest development in radar interferometric data processing. It is the only book on Permanent Scatterer (PS) technique of radar interferometry, and it details a newly developed stochastic model and estimator algorithm to cope with possible problems for the application of the PS technique. The STUN (spatio-temporal unwrapping network) algorithm, developed to cope with these issues in a robust way, is presented and applied to two test sites.
Download or read book Analysis Comparison and Modeling of Radar Interferometry Date of Surface Deformation Signals Associated with Underground Explosions Mine Collapses and Earthquakes Phase I written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We have previously presented simple elastic deformation modeling results for three classes of seismic events of concern in monitoring the CTBT--underground explosions, mine collapses and earthquakes. Those results explored the theoretical detectability of each event type using synthetic aperture radar interferometry (InSAR) based on commercially available satellite data. In those studies we identified and compared the characteristics of synthetic interferograms that distinguish each event type, as well the ability of the interferograms to constrain source parameters. These idealized modeling results, together with preliminary analysis of InSAR data for the 1995 mb 5.2 Solvay mine collapse in southwestern Wyoming, suggested that InSAR data used in conjunction with regional seismic monitoring holds great potential for CTBT discrimination and seismic source analysis, as well as providing accurate ground truth parameters for regional calibration events. In this paper we further examine the detectability and ''discriminating'' power of InSAR by presenting results from InSAR data processing, analysis and modeling of the surface deformation signals associated with underground explosions. Specifically, we present results of a detailed study of coseismic and postseismic surface deformation signals associated with underground nuclear and chemical explosion tests at the Nevada Test Site (NTS). Several interferograms were formed from raw ERS-1/2 radar data covering different time spans and epochs beginning just prior to the last U.S. nuclear tests in 1992 and ending in 1996. These interferograms have yielded information about the nature and duration of the source processes that produced the surface deformations associated with these events. A critical result of this study is that significant post-event surface deformation associated with underground nuclear explosions detonated at depths in excess of 600 meters can be detected using differential radar interferometry. An immediate implication of this finding is that underground nuclear explosions may not need to be captured coseismically by radar images acquired before and after an event in order to be detectable. This has obvious advantages in CTBT monitoring since suspect seismic events--which usually can be located within a 100 km by 100 km area of an ERS-1/2 satellite frame by established seismic methods-can be imaged after the event has been identified and located by existing regional seismic networks. Key Words: InSAR, SLC images, interferogram, synthetic interferogram, ERS-1/2 frame, phase unwrapping, DEM, coseismic, postseismic, source parameters.
Download or read book Application of Satellite Radar Interferometry in Study of the Relation Between Surface Deformation and Seismic Event of the 15th September 2018 in the Rudna Copper Mine Poland written by Karolina Owczarz and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Terrestrial and Satellite Radar Interferometry Applications for Ground Deformation Investigations in Urban Subsidence Detection Landslide Velocity Monitoring and Novel Failure Discovery written by Benjamin W. Lowry and published by . This book was released on 2019 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applications of Synthetic Aperture Radar Interferometry in the Study of the Nahanni Earthquake Region written by and published by . This book was released on 1908 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis, Synthetic Aperture Radar (SAR) Interferometry (InSAR) is used to monitor ground displacement in the North Nahanni River region and create digital elevation models (DEM's). InSAR has been shown to be a valuable tool for monitoring relative surface displacement due to various crustal movements and for creating accurate DEM's using pairs of SAR images. In this thesis SAR data from Canada's RADARSAT and European Space Agency's ERS-1 satellites were used to create differential interferograms and DEM's. The main objectives of this study included measurement of fault slips caused by a large earthquake(s) with magnitude(s) larger than 6.0. However, there were no large earthquakes during the acquisition of the InSAR data pairs and therefore them was no detectable crustal movements caused by earthquakes. Consequently this study was more focused on the creation of accurate DEM's of the study area from the interferograms. DEM's created from the RADARSAT and ERS-1 images were compared with a DEM providedby Geomatics Canada Centre for Topographic Information and 1:50 000 topographic maps of the Nahanni region. Both two-pass and three-pass differential interferometry was attempted using ERS-1 and RADARSAT imagery. (Abstract shortened by UMI.).
Download or read book Applications of Synthetic Aperture Radar Interferometry in the Study of the Nahanni Earthquake Region written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Subsidence written by D.J. Reddish and published by Elsevier. This book was released on 2012-12-02 with total page 541 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface subsidence is recognised as a problem in most countries, particularly those with significant mining and other underground resource extraction industries. This book addresses the problems relating to subsidence whether caused naturally, or arising from mining or other forms of underground extractive activity.The main purpose of this book is to bring together subsidence knowledge, experiences and research findings in many countries and rationalise such information especially in respect of its particular field of application. Emphasis has been given to collating field data on subsidence from different countries in order to make direct comparisons. Prediction of subsidence, particularly its occurrence and general characteristics has been seen as an important area where the book can contribute significantly in terms of reviewing available knowledge, methods, scope of application and orders of accuracy achieved. The book also examines methods of controlling subsidence and discusses the response of surface structures to and protection against subsidence.
Download or read book Radar Interferometry written by Raymond Franciscus Hanssen and published by . This book was released on 2001 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Ground based Interferometric Radar for Civil Engineering Applications written by Wyatt Steven Jenkins and published by . This book was released on 2013 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ability to measure and monitor deformations of civil engineering structures is important for verifying acceptable in-situ performance and detecting unexpected or unsafe conditions. Ground-based interferometric radar (GBIR) is an emerging technology that offers several advantages over satellite-based measurements for civil engineering applications. The objective of this research is to evaluate and document the performance of GBIR for civil engineering applications that are not well represented in the current literature. These applications include using GBIR to: (1) monitor and detect movements of unstable rockslopes, (2) perform periodic deformation monitoring of earth dams, and (3) measure thermal movements of a geosynthetic landfill liner during construction. Field measurements were conducted at three sites over time spans that ranged from minutes (landfill site) to several months (dam site). Changes in signal coherence for different surface materials were quantified and are presented for short (minutes to hours), intermediate (days to weeks) and long time spans (weeks to months). High coherence values were maintained from the rockslope and riprap materials, indicating that GBIR is a viable technique for repeat-setup monitoring of these sites over month long or greater intervals. Coherence from the landfill liner decreased greatly over the two-hour time span, likely due to changes in the shape and backscattering characteristics of the liner, indicating that GBIR may not work well for monitoring large movements of the landfill liner. Results from applying standard interferometric processing methods are presented, as well as a discussion of processing pitfalls and strategies for these unique applications.
Download or read book Controlled Study of Ground based Interferometric Radar for Rockfall Hazard Monitoring written by Joseph T. Gilliam and published by . This book was released on 2015 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ability to detect small and localized movements of geotechnical facilities is important for performance monitoring and early-warning hazard detection. Current deformation monitoring technology is limited in its ability to both scan massive structures and detect small and localized movements. Ground-based interferometric radar (GBIR) is an emerging remote sensing technology that has the potential to fill this gap in surface deformation monitoring technology. Much of the focus of previous research and application of GBIR has been on monitoring large spatial scale movements, such as mine walls, dams, and earth slopes experiencing deformational movements occurring over hundreds or thousands of square meters. In this study the focus is on evaluating the capabilities of GBIR for detecting and monitoring small movements (mm-scale) occurring over very localized regions (a few m2). Specifically, this study focused on the application of GBIR for detecting and monitoring movements of individual boulders in a massive landscape. The potential long-term application is to use GBIR to detect and monitor precursor movements to rockfall events. Boulders, ranging from 0.5 to 5 meters in approximate facial dimensions, were moved using pry bars and airbag jacks in increments of a few to several mm. Two identical GBIR devices positioned at separate locations scanned a region covering approximately 20,000 m2 after each boulder movement. Ground truth measurements were also performed after each boulder movement. The detectability of the boulder movements was assessed by comparing the distribution of measured phase values from the boulder to (1) phase values measured on the surrounding non-moving portion of the image and (2) phase values measured from the same boulder when it was not moving. The results from the study showed that movements of boulders with dimensions larger than about 2 m were detectable for range offset distances from about 75 to 150 m. Movements as small of 1.7 mm were detected on these larger boulders. Phase values associated with movements of the smaller boulders, with dimensions less than about 2 m, were more difficult to differentiate from the non-moving portions of the image. This study successfully demonstrated the potential of GBIR to fill existing gaps in current displacement and deformation monitoring technology for geotechnical applications.
Download or read book Ground based Synthetic Aperture Radar GBSAR Interferometry for Deformation Monitoring written by Zheng Wang and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Observations and Modeling of the Current Deformation in Afar Using Synthetic Aperture Radar Interferometry written by Jelena Tomić and published by . This book was released on 2011 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radar Interferometry in Hector Mine Pre seismic Deformation Research written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
