Download or read book Source Parameters and Propagation path Effects for Earthquakes in the Baja California Norte and Imperial Valley Regions written by Raul Ramon Castro and published by . This book was released on 1983 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Strong Ground Motion and Source Mechanism Studies for Earthquakes in the Northern Baja California Southern California Region written by Luis Munguía-Orozco and published by . This book was released on 1983 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Source Parameter Estimation and Related Uncertainties of Small Earthquakes in Southern California written by Deborah Lynn Kane and published by . This book was released on 2011 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the physics of earthquake rupture is critical to providing accurate estimates of seismic hazard and for effectively mitigating these hazards. Matching physical models to seismic data in order to better understand the earthquake rupture processes requires accurate and precise estimates of earthquake source properties. Measuring source properties such as rupture size and stress drop must include accounting for the effects of seismic wave propagation and making proper assumptions about the rupture process. This thesis focuses on the methods of estimating source properties of small earthquakes and on the application of these methods to earthquakes in two distinctly different seismogenic regions of California. In the San Jacinto Fault Zone, earthquakes recorded by a small aperture array allow quantification of source parameter uncertainties using empirical Green's functions and frequency-domain techniques. These uncertainties are frequently overlooked in source parameter estimation, and this study constrains them to ~30% of estimate values. A non-parametric time-domain method using a set of empirical Green's functions is described and applied to a series of example earthquakes. This approach minimizes the assumptions regarding the rupture process and can be used to study less simple ruptures. Correcting for the effects of seismic wave propagation is an important aspect of techniques used in source parameter estimation, and the conditions necessary to effectively use nearby earthquakes as path corrections are tested and quantified. At the San Andreas Fault near Parkfield, the high degree of waveform similarity among closely spaced earthquakes is used to apply spatially averaged propagation path corrections and search for rupture directivity effects. This analysis shows that the population of small earthquakes in this region does not have a consistent unilateral rupture direction, but 70% of M>3 earthquakes exhibit characteristics of southeast-directed rupture. Computational models featuring a fault interface separating two materials for Parkfield-like conditions agree with the preferential southeast-directed rupture and present potential implications for earthquake source physics. Combined, these studies of earthquake source parameter estimation can be used to improve future source parameter estimates, offer appropriate metrics for establishing uncertainty bounds, and contribute to the study of earthquake source physics.

Download or read book Seismological Research Letters written by and published by . This book was released on 1987* with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Seismotectonics of the Imperial Mexicali Valley Northern Baja California Mexico written by Andrew Peter Thomas and published by . This book was released on 1995 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Uniform California Earthquake Rupture Forecast Version 2 UCERF 2 written by Working Group on California Earthquake Probabilities and published by . This book was released on 2008 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accompanying CD-ROM has same title as book.

Download or read book Inversion of Regional Surface wave Spectra for Source Parameters of California Earthquakes written by Susan L. Beck and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The influence of site conditions on near source high frequency ground motion written by and published by . This book was released on 1987 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Source Parameters of Southern California Earthquakes written by Wayne Thatcher and published by . This book was released on 1973 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Destructive and Near destructive Earthquakes in California and Western Nevada 1769 1933 written by Harry Oscar Wood and published by . This book was released on 1934 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Source Processes of Small Earthquakes M 1 5 written by Peggy Ann Johnson and published by . This book was released on 1997 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Probabilities of Large Earthquakes in the San Francisco Bay Region California written by and published by . This book was released on 1990 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Peak Acceleration from Maximum Credible Earthquakes in California rock and Stiff soil Sites written by Lalliana Mualchin and published by . This book was released on 1992 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pre 1900 Earthquakes of Baja California and San Diego County written by Carl Ludvig Strand and published by . This book was released on 1980 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluating Earthquake Hazards in the Los Angeles Region an Earth science Perspective written by Joseph I. Ziony and published by . This book was released on 1985 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: An integrated set of studies describing methods for evaluating geologically controlled earthquake hazards as a basis for reducing future losses.

Download or read book Source Characteristics of Earthquakes Along the Northern San Jacinto Fault Zone and Faults Within Northern Baja California Mexico 1915 1956 written by Diane Irene Doser and published by . This book was released on 1992* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Empirical Interpretation of the Effects of Topography on Ground Motion of the San Fernando California Earthquake 9 February 1971 written by Frank K. Chang and published by . This book was released on 1976 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study attempts to determine site effects on earthquake ground motion and the correlation between acceleration and/or velocity generated during the San Fernando Earthquake and topography of the San Gabriel Mountain range. It was found that the contours of peak acceleration and peak velocity generally follow the topography of the San Gabriel Mountain range. The topographical effects on the ground motion could be interpreted in a simple manner as a function of elevation and direction of wave transmission path. The elevation and direction become the dominant factors in the distribution of the ground motion in the near field. A simple, practical method for calculating the bedrock motion using the ground motion-elevation gradient has been applied in the area south of Kagel Mountain and north of Santa Monica Mountain, in the San Fernando Valley. This method is validated using after-shock data. This ground motion-elevation gradient method was applied to an area where the topography has its highest elevation at the epicentral region and decreases in elevation to the surrounding locations in the near field (within 30 km). In any case, when the epicenter occurs at an elevation lower than the elevation of the surrounding area, this gradient method may not be applicable and must be tested for this alternate condition.