Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Comparison Of Direct S Modes Produced By Different Source Types
Download Comparison Of Direct S Modes Produced By Different Source Types full books in PDF, epub, and Kindle. Read online Comparison Of Direct S Modes Produced By Different Source Types ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Comparison of Direct-S Modes Produced by Different Source Types by : Nurtac Erturk
Download or read book Comparison of Direct-S Modes Produced by Different Source Types written by Nurtac Erturk and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compressional and shear body waves generated by a seismic source can be analyzed using vertical seismic profiling (VSP) data-acquisition procedures. If a goal of exploration geophysics is to study the physics and exploration applications of shear waves, it is important to know how much S-wave energy a source puts into the earth. To maximize S-wave created by a source, considerable effort has been expended to create surface sources that apply horizontally directed impulses to the earth (horizontal vibrators and horizontal impacts). In my project, radial shear (SR) and transverse shear (ST) waves generated by different types of sources and recorded by multicomponent receivers in a VSP well are examined and compared. The research question is 'can a vertical-impact source create shear wave energy equivalent to the S-wave energy produced by standard horizontal-force shear-wave sources?' To quantify the energy of shear-wave modes produced by different kinds of seismic sources, a VSP field test program was conducted at the Devine Test Site owned by The University of Texas at Austin. In the VSP data acquisition phase, the orientation of horizontal geophones is unknown because a borehole geophone rotates as it is lowered into a well, causing the horizontal geophones at each receiver station to be oriented in different azimuths. To study body waves, it is essential that all geophones in a vertical VSP array be oriented in a consistent azimuth. I mathematically rotated multi-component VSP sensors systems to change them from the inconsistent orientation they had at the time of data recording to a user-defined consistent-azimuth coordinate system. This rotation allowed ST and SR wave modes to be identified. After geophone rotation, direct-S wavelet amplitudes were analyzed in 90-ms windows starting at the first-break times of each arriving mode. Analysis of the rotated data showed that SR energy created by a vertical-impact source, a shot-hole explosive, and an inclined-impact source differ only slightly, and that there is essentially no difference in ST energy among these sources. Also, the signal frequency of SR and ST wave modes produced by horizontal-force shear wave sources are essentially the same as the frequency of SR and ST wave modes generated by a vertical-impact source. These test data show that vertical and horizontal vibrator sources produce shear wave modes having amplitudes 1000 times stronger than the other energy sources we tested. Considering the cost of using inclined-impact sources which is relatively expensive compared to using a vertical-impact source, and the difficulty of applying inclined-impacts in some land conditions, it is possible to obtain direct-S data of the same quality by using only a vertical-impact source or a shot-hole explosive. The arguments given above demonstrate that it is not necessary to use inclined-impact sources or horizontal vibrators to produce shear-wave data. S-wave data of the same quality produced by a horizontal-force source are provided by simple vertical-impact sources and shot-hole explosives.
Book Synopsis Comparison of Direct-s Modes Produced by Different Source Types by : Erturk Nurtac
Download or read book Comparison of Direct-s Modes Produced by Different Source Types written by Erturk Nurtac and published by . This book was released on 2014 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compressional and shear body waves generated by a seismic source can be analyzed using vertical seismic profiling (VSP) data-acquisition procedures. If a goal of exploration geophysics is to study the physics and exploration applications of shear waves, it is important to know how much S-wave energy a source puts into the earth. To maximize S-wave created by a source, considerable effort has been expended to create surface sources that apply horizontally directed impulses to the earth (horizontal vibrators and horizontal impacts). In my project, radial shear (SR) and transverse shear (ST) waves generated by different types of sources and recorded by multicomponent receivers in a VSP well are examined and compared. The research question is 'can a vertical-impact source create shear wave energy equivalent to the S-wave energy produced by standard horizontal-force shear-wave sources?' To quantify the energy of shear-wave modes produced by different kinds of seismic sources, a VSP field test program was conducted at the Devine Test Site owned by The University of Texas at Austin. In the VSP data acquisition phase, the orientation of horizontal geophones is unknown because a borehole geophone rotates as it is lowered into a well, causing the horizontal geophones at each receiver station to be oriented in different azimuths. To study body waves, it is essential that all geophones in a vertical VSP array be oriented in a consistent azimuth. I mathematically rotated multi-component VSP sensors systems to change them from the inconsistent orientation they had at the time of data recording to a user-defined consistent-azimuth coordinate system. This rotation allowed ST and SR wave modes to be identified. After geophone rotation, direct-S wavelet amplitudes were analyzed in 90-ms windows starting at the first-break times of each arriving mode. Analysis of the rotated data showed that SR energy created by a vertical-impact source, a shot-hole explosive, and an inclined-impact source differ only slightly, and that there is essentially no difference in ST energy among these sources. Also, the signal frequency of SR and ST wave modes produced by horizontal-force shear wave sources are essentially the same as the frequency of SR and ST wave modes generated by a vertical-impact source. These test data show that vertical and horizontal vibrator sources produce shear wave modes having amplitudes 1000 times stronger than the other energy sources we tested. Considering the cost of using inclined-impact sources which is relatively expensive compared to using a vertical-impact source, and the difficulty of applying inclined-impacts in some land conditions, it is possible to obtain direct-S data of the same quality by using only a vertical-impact source or a shot-hole explosive. The arguments given above demonstrate that it is not necessary to use inclined-impact sources or horizontal vibrators to produce shear-wave data. S-wave data of the same quality produced by a horizontal-force source are provided by simple vertical-impact sources and shot-hole explosives.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Book Synopsis Interactive Systems: Design, Specification, and Verification by : Fabio Paterno
Download or read book Interactive Systems: Design, Specification, and Verification written by Fabio Paterno and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: Making systems easier to use implies increasingly complex management of communication between users and applications. An increasing part of the application program is devoted to the user interface. In order to manage this complexity, it is very important to have tools, notations, and methodologies that support the designer's work during the refinement process from specification to implementation. The purpose of this proceedings of the first (1994) Eurographics workshop on this area is to review the state of the art. It compares the different existing approaches in order to identify the principal requirements and the most suitable notations and methods, and indicates the relevant results.
Book Synopsis The Routledge Handbook of Global Historical Archaeology by : Charles E. Orser, Jr.
Download or read book The Routledge Handbook of Global Historical Archaeology written by Charles E. Orser, Jr. and published by Routledge. This book was released on 2020-07-26 with total page 1039 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Routledge Handbook of Global Historical Archaeology is a multi-authored compendium of articles on specific topics of interest to today’s historical archaeologists, offering perspectives on the current state of research and collectively outlining future directions for the field. The broad range of topics covered in this volume allows for specificity within individual chapters, while building to a cumulative overview of the field of historical archaeology as it stands, and where it could go next. Archaeological research is discussed in the context of current sociological concerns, different approaches and techniques are assessed, and potential advances are posited. This is a comprehensive treatment of the sub-discipline, engaging key contemporary debates, and providing a series of specially-commissioned geographical overviews to complement the more theoretical explorations. This book is designed to offer a starting point for students who may wish to pursue particular topics in more depth, as well as for non-archaeologists who have an interest in historical archaeology. Archaeologists, historians, preservationists, and all scholars interested in the role historical archaeology plays in illuminating daily life during the past five centuries will find this volume engaging and enlightening.
Book Synopsis Production, Distribution, Use, and Environmental Impact Potential of Selected Pesticides by : Rosmarie Von Rumker
Download or read book Production, Distribution, Use, and Environmental Impact Potential of Selected Pesticides written by Rosmarie Von Rumker and published by . This book was released on 1974 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Journal of Research of the National Institute of Standards and Technology by :
Download or read book Journal of Research of the National Institute of Standards and Technology written by and published by . This book was released on 1994 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stone Artefact Production and Exchange Among the Lesser Antilles by : Sebastiaan Knippenberg
Download or read book Stone Artefact Production and Exchange Among the Lesser Antilles written by Sebastiaan Knippenberg and published by Amsterdam University Press. This book was released on 2007 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: This archaeological study reconstructs Pre-Columbian exchange networks in the Lesser Antilles based on lithic artefact distributions among the different islands.
Book Synopsis Aerographer's Mate Second Class by : Patrick J. O'Brien
Download or read book Aerographer's Mate Second Class written by Patrick J. O'Brien and published by . This book was released on 1989 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1971 with total page 1378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Encyclopedia of Surface and Colloid Science - by : Arthur T. Hubbard
Download or read book Encyclopedia of Surface and Colloid Science - written by Arthur T. Hubbard and published by CRC Press. This book was released on 2002-07-18 with total page 1580 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive reference collects fundamental theories and recent research from a wide range of fields including biology, biochemistry, physics, applied mathematics, and computer, materials, surface, and colloid science-providing key references, tools, and analytical techniques for practical applications in industrial, agricultural, and forensic processes, as well as in the production of natural and synthetic compounds such as foods, minerals, paints, proteins, pharmaceuticals, polymers, and soaps.
Book Synopsis Pulsed Discharge Plasmas by : Tao Shao
Download or read book Pulsed Discharge Plasmas written by Tao Shao and published by Springer Nature. This book was released on 2023-07-14 with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the latest progress in pulsed discharge plasmas presented by front-line researchers worldwide. The science and technology surrounding pulsed discharge plasmas is advanced through a wide scope of interdisciplinary studies into pulsed power and plasma physics. Pulsed discharge plasmas with high-power density, high E/N and high-energy electrons can effectively generate highly reactive plasma. Related applications have gathered strong interests in various fields. With contributions from global scientists, the book elaborates on the theories, numerical simulations, diagnostic methods, discharge characteristics and application technologies of pulsed discharge plasmas. The book is divided into three parts with a total of 35 chapters, including 11 chapters on pulsed discharge generation and mechanism, 12 chapters on pulsed discharge characterization and 12 chapters on pulsed discharge applications (wastewater treatments, biomedicine, surface modification, and energy conversion, etc). The book is a must-have reference for researchers and engineers in related fields and graduate students interested in the subject.
Book Synopsis Acoustic Emission Testing by : Christian U. Grosse
Download or read book Acoustic Emission Testing written by Christian U. Grosse and published by Springer Nature. This book was released on 2021-07-14 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an introduction to Acoustic Emission Testing and its applications to different materials like concrete, steel, ceramics, geotechnical materials, polymers, biological structures and wood. Acoustic Emission Techniques (AET) techniques have been studied in engineering for a long time. The techniques are applied more and more to practical investigations and are more and more standardized in codes. This is because the degradation of structures due to ageing urgently demand for maintenance and rehabilitation of structures in service. It results in the need for the development of advanced and efficient inspection techniques. In mechanical engineering and concerning the monitoring of machines and mechanical components, AE is a widely accepted observing deterioration in the frame of structural health monitoring. The advantages of AE like sensitivity, damage localization potential, non-intrusive nature as well as developments in signal analysis and data transmission allow applications that could not be considered decades ago. As such, AE techniques draw great attention to diagnostic applications and in material testing. This book covers all levels from the description of AE basics for AE beginners (level of a student) to sophisticated AE algorithms and applications to real large-scale structures as well as the observation of the cracking process in laboratory specimen to study fracture processes. This book has proved its worth over the past twelve years. Now in its second edition, it will be a resource that sets the standard and equips readers for the future. All chapters from the 1st edition have been updated and rewritten and eight extra chapters (e.g also regarding AE tomography, AE in plate-like structures and AE for investigations of hardening of fresh concrete) have been added.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1993 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book AES; written by and published by . This book was released on 2003 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electromagnetic Methods in Applied Geophysics by : Misac N. Nabighian
Download or read book Electromagnetic Methods in Applied Geophysics written by Misac N. Nabighian and published by SEG Books. This book was released on 1988 with total page 989 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a slag heap, the result of strip mining, creeps closer to his house in the Ohio hills, fifteen-year-old M. C. is torn between trying to get his family away and fighting for the home they love.
Book Synopsis National Bureau of Standards Handbook by : United States. National Bureau of Standards
Download or read book National Bureau of Standards Handbook written by United States. National Bureau of Standards and published by . This book was released on 1961 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:
