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Book Horizontal to vertical Component Ratios for Earthquake Ground Motions Recorded on Hard Rock Sites in Canada microform

Download or read book Horizontal to vertical Component Ratios for Earthquake Ground Motions Recorded on Hard Rock Sites in Canada microform written by Jamila A. Siddiqi and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 2000 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Influence of Ground Motion and System Characteristics on Cumulative Seismic Demand

Download or read book Influence of Ground Motion and System Characteristics on Cumulative Seismic Demand written by Hu Qi and published by . This book was released on 2004 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Ground Motion and Seismic Site Amplification in Central and Eastern North America and Regional Subduction Zones

Download or read book Ground Motion and Seismic Site Amplification in Central and Eastern North America and Regional Subduction Zones written by Grace Alexandra Parker and published by . This book was released on 2018 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ground motion intensity measures are used to represent various components of earthquake shaking intensity and frequency content in the form of simple parameters; examples include peak ground acceleration, Arias intensity, and pseudo-spectral acceleration (PSA). Ground motion models (GMMs) are developed to predict these intensity measures as a function of earthquake source, wave propagation path, and local geotechnical site conditions. GMMs are formulated to capture the underlying physics of source processes, wave propagation, and site response, with individual model parameters set based on various combinations of empirical ground motion data analysis and physics-based ground motion simulations. The majority of GMMs are conditioned for hard rock reference sites, with shear wave velocity (VS) = 3000 m/s, or with a time-averaged shear wave velocity in the upper 30 meters of the crust (VS30) = 760 m/s. Additional site amplification models are necessary in order to estimate GMIMs for other site conditions, including weathered rock and soil sites. As shear waves propagate vertically in the near-surface, the conservation of energy dictates that the wave amplitude must increase as the seismic velocity of the medium decreases. This amplification, or the so-called linear site effect, is usually parameterized using VS30, and sometimes site fundamental frequency or depth to bedrock, if available. This thesis has two parts, according to subject matter. The first part of this thesis, consisting of Chapters 2, 3, and 4, focuses on seismic site characterization and site amplification in central and eastern North America (CENA) in the context of the Next Generation Attenuation-East (NGA-East) project. Chapter 2 presents a hybrid geology-slope approach for VS30 estimation that utilized a new and expanded shear-wave velocity (VS) measurement database for CENA. The proxy is conditioned on geologic category from newly considered large-scale geologic maps, the extent of Wisconsin glaciation, sedimentary basin structure, and 30 arc-sec topographic gradient. Nonglaciated sites were found to have a modest natural log dispersion of VS30 ( ln V= 0.36) relative to glaciated sites ( lnV = 0.66), indicating better predictability of VS30 for the former. These findings were used estimate the mean and standard deviation of VS30 for NGA-East recording stations when measurements were not available. Chapter 3 presents empirical linear site amplification models conditioned on time-averaged shear wave velocity in the upper 30 m (VS30) for CENA, developed using a combination of least-squares, mixed effects, and Bayesian techniques. Site amplification is found to scale with VS30 for intermediate to stiff site conditions (VS30 > 300 m/s) in a weaker manner than for active tectonic regions. For stiff sites (> 800 m/s), I find differences in amplification for previously glaciated and non-glaciated regions, with non-glaciated sites having lower amplification. The models account for predictor uncertainty, which does not affect the median model, but decreases model dispersion. Lastly, Chapter 4 presents recommendations for modeling of ergodic site amplification in CENA, based primarily on results from the literature (including the model in Chapter 3), for application in the U.S. Geological Survey national seismic hazard maps. Previously, the maps have used site factors developed using data and simulations for active tectonic regions; however, results from NGA-East demonstrate different levels of site amplification in CENA. The recommended model has three terms, two of which describe linear site amplification: an empirically constrained VS30-scaling term relative to a 760 m/s reference, and a simulation-based term to adjust site amplification from the 760 m/s to the CENA reference of VS = 3000 m/s. The second part of this thesis, consisting of Chapters 5 and 6, focuses on the development of a global GMM and site amplification model with regional adjustment factors for subduction zone regions as a part of the Next Generation Attenuation-Subduction (NGA-Sub) project. Chapter 5 presents global subduction zone GMMs for interface and intraslab events, with regionalized terms for Alaska, Cascadia, Central America. Mexico, Japan, South America, and Taiwan. The near-source saturation model, magnitude-dependent geometrical spreading, and magnitude-scaling break point are constrained using simulations and fault geometry, and the anelastic attenuation, magnitude scaling, and depth scaling terms are constrained empirically. The model is regionalized in the constant, anelastic attenuation, and depth-scaling terms, and the magnitude break-point. When applying the model to a region not considered in the study, we recommend using an appropriate range of epistemic uncertainty that captures regional variation. Chapter 6 presents a subduction-specific site amplification model, meant to be paired with the reference-rock GMM of Chapter 5. This site amplification model for subduction regions accounts for regional differences in VS30-scaling, and re-calibrates a widely used nonlinear site term for active tectonic regions.

Book Analysis of a Worldwide Strong Motion Data Sample to Develop an Improved Correlation Between Peak Acceleration Seismic Intensity and Other Physical Parameters

Download or read book Analysis of a Worldwide Strong Motion Data Sample to Develop an Improved Correlation Between Peak Acceleration Seismic Intensity and Other Physical Parameters written by J. R. Murphy and published by . This book was released on 1978 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Reappraisal of the Effect of Vertical Ground Motions on Response

Download or read book Reappraisal of the Effect of Vertical Ground Motions on Response written by Nicholas Nicholas Ambraseys and published by . This book was released on 2000 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report updates and extends earlier work by Ambraseys and Simpson which sought to answer the question: does the vertical component of ground motion constitute a significant proportion of the loading that has to be resisted by a building and by its foundation. It concentrates on ground motion in the near-field where the importance of vertical accelerations is greatest. Since the previous work was completed, new near-field strong-motion data has been recorded and published, thaerefore the equations and graphs given need to be updated using these new records.

Book Rapid Visual Screening of Buildings for Potential Seismic Hazards Supporting Documentation

Download or read book Rapid Visual Screening of Buildings for Potential Seismic Hazards Supporting Documentation written by and published by Government Printing Office. This book was released on 2015 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Rapid Visual Screening (RVS) handbook can be used by trained personnel to identify, inventory, and screen buildings that are potentially seismically vulnerable. The RVS procedure comprises a method and several forms that help users to quickly identify, inventory, and score buildings according to their risk of collapse if hit by major earthquakes. The RVS handbook describes how to identify the structural type and key weakness characteristics, how to complete the screening forms, and how to manage a successful RVS program.

Book Assessment of Regional Earthquake Hazards and Risk Along the Wasatch Front Utah

Download or read book Assessment of Regional Earthquake Hazards and Risk Along the Wasatch Front Utah written by Paula Gori and published by . This book was released on 1992 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chapters A-J are issued as a single volume and are not available separately.

Book Earthquake Resistant Buildings

Download or read book Earthquake Resistant Buildings written by M.Y.H. Bangash and published by Springer Science & Business Media. This book was released on 2011-08-19 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt: This concise work provides a general introduction to the design of buildings which must be resistant to the effect of earthquakes. A major part of this design involves the building structure which has a primary role in preventing serious damage or structural collapse. Much of the material presented in this book examines building structures. Due to the recent discovery of vertical components, it examines not only the resistance to lateral forces but also analyses the disastrous influence of vertical components. The work is written for Practicing Civil, Structural, and Mechanical Engineers, Seismologists and Geoscientists. It serves as a knowledge source for graduate students and their instructors.

Book Tentative Provisions for the Development of Seismic Regulations for Buildings

Download or read book Tentative Provisions for the Development of Seismic Regulations for Buildings written by Applied Technology Council and published by . This book was released on 1978 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Routine Data Processing in Earthquake Seismology

Download or read book Routine Data Processing in Earthquake Seismology written by Jens Havskov and published by Springer Science & Business Media. This book was released on 2010-06-16 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book is to get a practical understanding of the most common processing techniques in earthquake seismology. The book deals with manual methods and computer assisted methods. Each topic will be introduced with the basic theory followed by practical examples and exercises. There are manual exercises entirely based on the printed material of the book, as well as computer exercises based on public domain software. Most exercises are computer based. The software used, as well as all test data are available from http://extras.springer.com. This book is intended for everyone processing earthquake data, both in the observatory routine and in connection with research. Using the exercises, the book can also be used as a basis for university courses in earthquake processing. Since the main emphasis is on processing, the theory will only be dealt with to the extent needed to understand the processing steps, however references will be given to where more extensive explanations can be found. Includes: • Exercises • Test data • Public domain software (SEISAN) available from http://extras.springer.com

Book Preliminary Determination of Epicenters

Download or read book Preliminary Determination of Epicenters written by and published by . This book was released on 1970 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Department of Defense Dictionary of Military and Associated Terms

Download or read book Department of Defense Dictionary of Military and Associated Terms written by United States. Joint Chiefs of Staff and published by . This book was released on 1979 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: