Download or read book Detection and Measurement of Land Subsidence and Uplift Using Global Positioning System Surveys and Interferometric Synthetic Aperture Radar Coachella Valley California 2010 17 written by Michelle Sneed and published by . This book was released on 2020 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Detection and Measurement of Land Subsidence Using Global Positioning System and Interferometric Synthetic Aperture Radar Coachella Valley California 1996 98 written by Michelle Sneed and published by . This book was released on 2001 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Detection and Measurement of Land Subsidence Using Global Positioning System Surveying and Interferometric Synthetic Aperture Radar Coachella Valley California 1996 2005 written by Michelle Sneed and published by . This book was released on 2013 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Detection and Measurement of Land Subsidence Using Global Positioning System Surveying and Interferometric Synthetic Aperture Radar Coachella Valley California 1996 2005 written by Michelle Sneed and published by . This book was released on 2007 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Detection and Measurement of Land Subsidence Using Global Positioning System and Interferometric Synthetic Aperture Radar Coachella Valley California 1998 2000 written by Michelle Sneed and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Detection and Measurement of Land Subsidence Using Global Positioning System and Interferometric Synthetic Aperture Radar Coachella Valley California 1996 98 written by and published by . This book was released on 2001 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Detection and Measurement of Land Subsidence Using Interferometric Synthetic Aperture Radar and Global Positioning System San Bernardino County Mojave Desert California written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific Investigations Report written by Sharon E. Kroening and published by . This book was released on 2004 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of land subsidence and earth fissures in Cedar Valley Iron County Utah written by Paul Inkenbrandt and published by Utah Geological Survey. This book was released on 2014-03-12 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 116-page report presents the results of an investigation by the Utah Geological Survey of land subsidence and earth fissures in Cedar Valley, Iron County, Utah. Basin-fill sediments of the Cedar Valley Aquifer contain a high percentage of fine-grained material susceptible to compaction upon dewatering. Groundwater discharge in excess of recharge (groundwater mining) has lowered the potentiometric surface in Cedar Valley as much as 114 feet since 1939. Groundwater mining has caused permanent compaction of fine-grained sediments of the Cedar Valley aquifer, which has caused the land surface to subside, and a minimum of 8.3 miles of earth fissures to form. Recently acquired interferometric synthetic aperture radar imagery shows that land subsidence has affected approximately 100 mi² in Cedar Valley, but a lack of accurate historical benchmark elevation data over much of the valley prevents its detailed quantification. Continued groundwater mining and resultant subsidence will likely cause existing fissures to lengthen and new fissures to form which may eventually impact developed areas in Cedar Valley. This report also includes possible aquifer management options to help mitigate subsidence and fissure formation, and recommended guidelines for conducting subsidence-related hazard investigations prior to development.

Download or read book Evaluation of Interferometric Synthetic Aperture Radar InSAR Techniques for Measuring Land Subsidence and Calculated Susidence Rates for the Escalante Valley Utah 1998 to 2006 written by Richard R. Forster and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Previous studies have shown the Escalante Valley, Utah, is subsiding due to groundwater withdrawal. The magnitude and spatial pattern of this cm/yr.-scale subsidence is mapped with satellite data from a synthetic aperture radar (SAR) using interferometric SAR (InSAR) processing techniques.

Download or read book Land Subsidence in Southwest Utah from 1993 to 1996 Measured with Interferometric Synthetic Aperture Radar InSAR written by Richard R. Forster and published by Utah Geological Survey. This book was released on 2006-12 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this 35 page report is to measure land-surface subsidence in southwest Utah using Interferometric Synthetic Aperture Radar (InSAR).

Download or read book Investigation of Land Subsidence in the Houston Galveston Region of Texas by Using the Global Positioning System and Interferometric Synthetic Aperture Radar 1993 2000 written by Gerald W. Bawden and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Subsidence Study in Northwest Harris County Using GPS LiDAR and InSAR Techniques written by Ayca Karacay and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Subsidence has been affecting many cities around the world, such as Nagoya (Japan), Venice (Italy), San Joaquin Valley and Long Beach (California), and Houston (Texas). This phenomenon can be caused by natural processes and/or human activities, including but not limited to carbonate dissolution, extraction of material from mines, soil compaction, and fluid withdrawal. Recent studies on Harris County, Texas suggested that surface deformation is driven by four major mechanisms: faulting, soil compaction, salt tectonics, and fluid withdrawal (groundwater withdrawal and hydrocarbon extraction). The objective of this study was to assess the land deformation rate in the northwest Harris and detect the effect of fluid withdrawal on subsidence. To achieve this goal, data from three complimentary remote sensing techniques Global Positioning System (GPS), Light Detection and Ranging (LiDAR), and Interferometric Synthetic Aperture Radar (InSAR) were used. The data of twenty (20) GPS stations acquired from Harris-Galveston Subsidence District (HGCSD) were processed using Online Positioning User Service (OPUS) of National Geodetic Survey (NGS). Two (2) of these GPS stations are Continuously Operating Reference Stations (CORS), and eighteen (18) are Port-A-Measure (PAM) sites. The zonal statistic method was applied on 2001 and 2008 Digital Elevation Models (DEMs) generated using LiDAR data. The Persistent Scatterer Interferometry (PSI) was performed using twenty five (25) ERS1/2 data. The rates of change in groundwater level and hydrocarbon production were calculated using data from 261 water wells and 658 hydrocarbon wells. Furthermore, the rates of change in groundwater level and hydrocarbon production were compared to the results of remote sensing techniques. The results of this study revealed the rates of subsidence ranging from 0.3 to 4.5 cm/y for GPS, LiDAR, and InSAR. The level of groundwater drops with a rate of 4 m/y close to the area where subsidence is the highest. Also, the hydrocarbon withdrawals are highest (~70 million m3/y) in areas sinking more rapidly. This study found strong correlation between fluid withdrawals and subsidence. Therefore, both groundwater and hydrocarbon withdrawal in northwest Harris are considered to be the major drivers of the subsidence deformation.

Download or read book Land Subsidence Monitoring Using Persistent Scatterer Interferometric Synthetic Aperture Radar written by Hairi Ahmad and published by . This book was released on 2012 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Groundwater Depletion in the United States 1900 2008 written by Leonard F Konikow and published by CreateSpace. This book was released on 2014-08-01 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: A natural consequence of groundwater withdrawals is the removal of water from subsurface storage, but the overall rates and magnitude of groundwater depletion in the United States are not well characterized. This study evaluates long- term cumulative depletion volumes in 40 separate aquifers or areas and one land use category in the United States, bringing together information from the literature and from new analy- ses. Depletion is directly calculated using calibrated ground- water models, analytical approaches, or volumetric budget analyses for multiple aquifer systems. Estimated groundwater depletion in the United States during 1900-2008 totals approx- imately 1,000 cubic kilometers (km3). Furthermore, the rate of groundwater depletion has increased markedly since about 1950, with maximum rates occurring during the most recent period (2000-2008) when the depletion rate averaged almost 25 km3 per year (compared to 9.2 km3 per year averaged over the 1900-2008 timeframe).

Download or read book The Use of Interferometric Spaceborne Radar and GIS to Measure Ground Subsidence in Peat Soils in Indonesia written by Bashar Dahdal and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Interferometric synthetic aperture radar (InSAR) has been increasingly used to extract information about the earth"s surface by exploiting the phase difference between two complex radar signals. Some significant application fields that utilize InSAR techniques are digital elevation model (DEM) generation, land use classification and land subsidence. In this thesis, by using ERS-1/2 tandem SAR images pairs, the potential implementations of SAR interferometry in tropical peatland forests in Central Kalimantan, Indonesia are described. Coherence was found to be a good tool for rapid assessment for burned and deforested areas. The coherence of burned forest area was increased by 0.2; whilst the minimum coherence was found to be than 0.35. However, many critical factors affect the quality of InSAR data and limit its applications, such as methods of InSAR data processing. This study emphasizes the impact of different processing and phase unwrapping techniques on DEM accuracy. Analyses of InSAR DEM accuracy indicate that DEMs with relative errors of less than 3 m root mean square error (RMSE) are possible in some regions in the former Mega Rice Project (Ex-MRP) area and could meet many objectives of a global mapping mission. Applying adaptive filtering many times with a decreasing window size has a strong impact to reduce the number of residues, which can increase the phase unwrapping efficiency and the final DEM accuracy. Furthermore, the differential SAR Interferometry (DInSAR) was examined to see if it can detect peatland subsidence accurately from October 1997 to January 2000 using 4-pass and complex interferogram combination methods. The subsidence rate of 2 cm per year is considered to be the best possible prediction for subsidence in the project area and between 53 and 83 Mt of peat carbon was lost for the same period of the study. The contribution of the maximum subsidence to the emission of CO2 was estimated to be 52 tonnes per hectare per year. These results are not reliable enough for detailed planning purposes, but they provide a basis for further work by highlighting where methodological development is needed.

Download or read book Position Navigation and Timing Technologies in the 21st Century written by Y. Jade Morton and published by John Wiley & Sons. This book was released on 2021-01-13 with total page 1170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers the latest developments in PNT technologies, including integrated satellite navigation, sensor systems, and civil applications Featuring sixty-four chapters that are divided into six parts, this two-volume work provides comprehensive coverage of the state-of-the-art in satellite-based position, navigation, and timing (PNT) technologies and civilian applications. It also examines alternative navigation technologies based on other signals-of-opportunity and sensors and offers a comprehensive treatment on integrated PNT systems for consumer and commercial applications. Volume 1 of Position, Navigation, and Timing Technologies in the 21st Century: Integrated Satellite Navigation, Sensor Systems, and Civil Applications contains three parts and focuses on the satellite navigation systems, technologies, and engineering and scientific applications. It starts with a historical perspective of GPS development and other related PNT development. Current global and regional navigation satellite systems (GNSS and RNSS), their inter-operability, signal quality monitoring, satellite orbit and time synchronization, and ground- and satellite-based augmentation systems are examined. Recent progresses in satellite navigation receiver technologies and challenges for operations in multipath-rich urban environment, in handling spoofing and interference, and in ensuring PNT integrity are addressed. A section on satellite navigation for engineering and scientific applications finishes off the volume. Volume 2 of Position, Navigation, and Timing Technologies in the 21st Century: Integrated Satellite Navigation, Sensor Systems, and Civil Applications consists of three parts and addresses PNT using alternative signals and sensors and integrated PNT technologies for consumer and commercial applications. It looks at PNT using various radio signals-of-opportunity, atomic clock, optical, laser, magnetic field, celestial, MEMS and inertial sensors, as well as the concept of navigation from Low-Earth Orbiting (LEO) satellites. GNSS-INS integration, neuroscience of navigation, and animal navigation are also covered. The volume finishes off with a collection of work on contemporary PNT applications such as survey and mobile mapping, precision agriculture, wearable systems, automated driving, train control, commercial unmanned aircraft systems, aviation, and navigation in the unique Arctic environment. In addition, this text: Serves as a complete reference and handbook for professionals and students interested in the broad range of PNT subjects Includes chapters that focus on the latest developments in GNSS and other navigation sensors, techniques, and applications Illustrates interconnecting relationships between various types of technologies in order to assure more protected, tough, and accurate PNT Position, Navigation, and Timing Technologies in the 21st Century: Integrated Satellite Navigation, Sensor Systems, and Civil Applications will appeal to all industry professionals, researchers, and academics involved with the science, engineering, and applications of position, navigation, and timing technologies. pnt21book.com