Download or read book Heterogeneous Slip and Rupture Models of the San Andreas Fault Zone Based Upon Three dimensional Earthquake Tomography written by William Foxall and published by . This book was released on 1992 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heterogeneous Slip and Rupture Models of the San Andreas Fault Zone Based Upon Three dimensional Earthquake Tomography written by and published by . This book was released on 1992 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crystal fault zones exhibit spatially heterogeneous slip behavior at all scales, slip being partitioned between stable frictional sliding, or fault creep, and unstable earthquake rupture. An understanding the mechanisms underlying slip segmentation is fundamental to research into fault dynamics and the physics of earthquake generation. This thesis investigates the influence that large-scale along-strike heterogeneity in fault zone lithology has on slip segmentation. Large-scale transitions from the stable block sliding of the Central 4D Creeping Section of the San Andreas, fault to the locked 1906 and 1857 earthquake segments takes place along the Loma Prieta and Parkfield sections of the fault, respectively, the transitions being accomplished in part by the generation of earthquakes in the magnitude range 6 (Parkfield) to 7 (Loma Prieta). Information on sub-surface lithology interpreted from the Loma Prieta and Parkfield three-dimensional crustal velocity models computed by Michelini (1991) is integrated with information on slip behavior provided by the distributions of earthquakes located using, the three-dimensional models and by surface creep data to study the relationships between large-scale lithological heterogeneity and slip segmentation along these two sections of the fault zone.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Open file Report written by and published by . This book was released on 1994 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Geological Survey Open file Report written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Earthquake Hazards Reduction Program Summaries of Technical Reports Volume XXXV written by and published by . This book was released on 1994 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1993 with total page 922 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Three dimensional Deformation and Stress Models written by Bridget R. Smith and published by . This book was released on 2005 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plate Boundaries and Natural Hazards written by Joao C. Duarte and published by John Wiley & Sons. This book was released on 2016-08-08 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: The beginning of the new millennium has been particularly devastating in terms of natural disasters associated with tectonic plate boundaries, such as earthquakes in Sumatra, Chile, Japan, Tahiti, and Nepal; the Indian Ocean and the Pacific Ocean tsunamis; and volcanoes in Indonesia, Chile, Iceland that have produced large quantities of ash causing major disruption to aviation. In total, half a million people were killed by such natural disasters. These recurring events have increased our awareness of the destructive power of natural hazards and the major risks associated with them. While we have come a long way in the search for understanding such natural phenomena, and although our knowledge of Earth dynamics and plate tectonics has improved enormously, there are still fundamental uncertainties in our understanding of natural hazards. Increased understanding is crucial to improve our capacity for hazard prediction and mitigation. Volume highlights include: Main concepts associated with tectonic plate boundaries Novel studies on boundary-related natural hazards Fundamental concepts that improve hazard prediction and mitigation Plate Boundaries and Natural Hazards will be a valuable resource for scientists and students in the fields of geophysics, geochemistry, plate tectonics, natural hazards, and climate science. Read an interview with the editors to find out more: https://eos.org/editors-vox/plate-boundaries-and-natural-hazards
Download or read book U S Geological Survey Professional Paper written by and published by . This book was released on 1984 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geocomplexity and the Physics of Earthquakes written by John Rundle and published by American Geophysical Union. This book was released on 2000-01-10 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 120. Earthquakes in urban centers are capable of causing enormous damage. The January 16, 1995 Kobe, Japan earthquake was only a magnitude 6.9 event and yet produced an estimated $200 billion loss. Despite an active earthquake prediction program in Japan, this event was a complete surprise. Similar scenarios are possible in Los Angeles, San Francisco, Seattle, and other urban centers around the Pacific plate boundary. The development of forecast or prediction methodologies for these great damaging earthquakes has been complicated by the fact that the largest events repeat at irregular intervals of hundreds to thousands of years, resulting in a limited historical record that has frustrated phenomenological studies. The papers in this book describe an emerging alternative approach, which is based on a new understanding of earthquake physics arising from the construction and analysis of numerical simulations. With these numerical simulations, earthquake physics now can be investigated in numerical laboratories. Simulation data from numerical experiments can be used to develop theoretical understanding that can be subsequently applied to observed data. These methods have been enabled by the information technology revolution, in which fundamental advances in computing and communications are placing vast computational resources at our disposal.
Download or read book The Loma Prieta California Earthquake of October 17 1989 geologic Setting and Crustal Structure written by Ray E. Wells and published by U.S. Government Printing Office. This book was released on 2004 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Results from Studies of Three Outstanding Problems in Local Regional and Global Seismology written by Michael Stuart Antolik and published by . This book was released on 1996 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measuring and modeling the ground deformation of geological disasters using modern geodesy written by Xinjian Shan and published by Frontiers Media SA. This book was released on 2023-07-19 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics Briefs written by and published by . This book was released on 1994 with total page 1118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Method for Dynamic Earthquake Rupture Simulation with Applications to a Large Southern San Andreas Scenario written by Geoffrey Palarz Ely and published by . This book was released on 2008 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Given the scarcity of near-source recordings for large earthquakes, numerical simulations play an important roll in the prediction of possible ground motion from future events. Simulations also give insight to physical processes of fault rupture that are difficult or impossible to empirically measure. In this dissertation I develop a numerical method to simulate spontaneous shear crack propagation within a heterogeneous, three-dimensional, viscoelastic medium. The implementation is highly scalable, enabling large scale, multi-processor calculations. Wave motions are computed on a logically rectangular hexahedral mesh, using the generalized finite difference method of Support Operators. This approach enables the modeling on nonplanar boundaries, as well as nonplanar ruptures. Computations are second-order in space and time. Stiffness and viscous hourglass corrections are employed to suppress suppress zero-energy grid oscillation modes. Model boundaries may be reflective or absorbing, where absorbing boundaries are handled using the method of perfectly matched layers (PML). Three well known test problems are used to verify various aspects of the numerical method: wave propagation in a layered medium; surface amplification due to a semi-cylindrical canyon; and spontaneous rupture of a rectangular fault. Tests are repeated with varying amounts of simple shear deformation of the mesh. Sufficient accuracy is preserved under high-angle mesh shearing to permit modeling of thrust-earthquake geometries. The method is used to simulate a large (M[omega]7.6) earthquake scenarios along the southern San Andreas fault, using a piecewise planar fault representation and true topography of the ground surface. The crustal velocity structure is taken from the Southern California Earthquake Center Community Velocity Model (SCEC-CVM), which is currently the most complete three-dimensional model available for the region. Heterogeneous initial traction conditions are derived from an inversion of the M7.3 1992 Landers strong ground motion records. Heterogeneity in the traction model leads to focusing of the rupture front, in many cases producing super-shear rupture velocity in areas of high initial traction (asperities). Focusing sometimes occurs between the asperities, with the notable result that highest peak slip rates occur in areas of low initial traction. The overall distribution of simulated peak ground velocities is consistent with those derived from the current empirical models, with some important deviations associated with basin wave-guide and directivity effects.
Download or read book Theoretical Global Seismology written by F. A. Dahlen and published by Princeton University Press. This book was released on 2020-08-04 with total page 1040 pages. Available in PDF, EPUB and Kindle. Book excerpt: After every major earthquake, the Earth rings like a bell for several days. These free oscillations of the Earth and the related propagating body and surface waves are routinely detected at broad-band seismographic stations around the world. In this book, F. A. Dahlen and Jeroen Tromp present an advanced theoretical treatment of global seismology, describing the normal-mode, body-wave, and surface-wave methods employed in the determination of the Earth's three-dimensional internal structure and the source mechanisms of earthquakes. The authors provide a survey of both the history of global seismological research and the major theoretical and observational advances made in the past decade. The book is divided into three parts. In the first, "Foundations," Dahlen and Tromp give an extensive introduction to continuum mechanics and discuss the representation of seismic sources and the free oscillations of a completely general Earth model. The resulting theory should provide the basis for future scientific discussions of the elastic-gravitational deformation of the Earth. The second part, "The Spherical Earth," is devoted to the free oscillations of a spherically symmetric Earth. In the third part, "The Aspherical Earth," the authors discuss methods of dealing with the Earth's three-dimensional heterogeneity. The book is concerned primarily with the forward problem of global seismology--detailing how synthetic seismograms and spectra may be calculated and interpreted. As a long-needed unification of theories in global seismology, the book will be important to graduate students and to professional seismologists, geodynamicists, and geomagnetists, as well as to astronomers who study the free oscillations of the Sun and other stars.
