Download or read book Updated Probabilistic and Deterministic Seismic Hazard Analyses for the University of California Berkeley and Lawrence Berkeley National Laboratory written by and published by . This book was released on 2009 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: Probabilistic seismic hazard analyses of ground motion levels having specified frequencies of exceedance (return periods) for UCB campus and LBNL.

Download or read book Review of Recommendations for Probabilistic Seismic Hazard Analysis written by National Research Council and published by National Academies Press. This book was released on 1997-01-06 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Verification of Probabilistic Seismic Hazard Analysis Computer Programs written by Patricia Thomas (Engineer) and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Seismic Hazard Analysis written by Rodrigo Araya Montoya and published by . This book was released on 1988 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Probabilistic Seismic Hazard Analysis for Southern California Coastal Facilities written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of this study was to develop probabilistic seismic hazard estimates for the coastal and offshore area of Ventura, Los Angeles and Orange counties for use as a basis for the University of Southern California (USC) to develop physical models of tsunami for the coastal regions and by the California State Lands Commission (SLC) to develop regulatory standards for seismic loading and liquefaction evaluation of marine oil terminals. The probabilistic seismic hazard analysis (PSHA) was carried out by the Lawrence Livermore National Laboratory (LLNL), in several phases over a time period of two years, following the method developed by LLNL for the estimation of seismic hazards at Department Of Energy (DOE) facilities, and for 69 locations of nuclear plants in the Eastern United States, for the Nuclear Regulatory Commission (NRC). This method consists in making maximum use of all physical data (qualitative, and quantitative) and to characterize the uncertainties by using a set of alternate spatiotemporal models of occurrence of future earthquakes, as described in the SSHAC, PSHA Guidance Document (Budnitz et al., 1997), and implemented for the NRC (Savy et al., 2002). In general, estimation of seismic hazard is based not only on our understanding of the regional tectonics and detailed characterization of the faults in the area but also on the analysis methods employed and the types of physical and empirical models that are deemed appropriate for the analysis. To develop this understanding, the body of knowledge in the scientific community is sampled in a series of workshops with a group of experts representative of the entire scientific community, including geologists and seismologists from the United States Geological Survey (USGS), members of the South California Earthquake Center (SCEC), and members of academic institutions (University of California Santa-Cruz, Stanford, UC Santa Barbara, and University of Southern California), and members of consulting firms. The purpose of the workshops was to analyze and evaluate existing data and formulate tectonic models that represent all the possible and physically valid models envisioned by the group. The basic input for the PSHA was a set of alternate earthquake source characterizations and a multi-model representation of ground motion attenuation, for adequate representation of the uncertainties. In the first phase, the physical modeling enabled rigorous analysis of uncertainty that arises from a lack of full knowledge in the characterization of both earthquake sources and ground motion. The set of ground motion prediction models included models that were updated to benefit from near field data from the most recent earthquakes (Taiwan and Turkey). The calculation were performed with LLNL computer software that is based on the Cornell, 1968 analytical model, and that propagates the knowledge uncertainties using a Monte-Carlo simulation approach (see, Bernreuter et al., 1989). Although the calculation were performed for rock-site conditions and generic soil sites, only the results for rock are given here. It is assumed that development of design parameters will include a correction of the spectral shape to reflect the site specificity. The results are for the average of the two horizontal components of the ground motion. The PSHA was calculated for thirteen sites, including two sites offshore. These sites are: Catalina Island site 1, Catalina Island site 2, Goleta, Offshore Santa-Monica, Offshore San-Clemente, Port Dume, Palos Verde site 1, Palos Verde site 2, Port of Long Beach, Port of Los Angeles, Port Hueneme, San Pedro Escarpment, and Redondo Canyon. For these thirteen sites, the hazard curves in terms of probability of exceedence of the peak ground acceleration (PGA), was calculated. In addition for Port of Long Beach, Port of Los Angeles, Santa Monica, and a site Offshore, east of San Clemente the (5% damping) uniform hazard response spectra were calculated for five Return Periods (100, 500, 1000, 2000, 10,000 year Return Periods). The detailed results are given in chapter 7.

Download or read book Earthquake Hazard Analysis written by Leon Reiter and published by . This book was released on 1990 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: -- Science

Download or read book Probabilistic Seismic Hazard Analysis written by William E. Benson and published by . This book was released on 1988 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NRC Committee on Seismology established the Panel on Seismic Hazard Analysis to assess methodologies. The panel concentrated on the probabilistic method but also examined alternatives. The panel's discussions included a review of the extensive hazard analyses for the eastern United States by the Electric Power Research Institute and Lawrence Livermore National Laboratory. A questionnaire about the attributes of seismic hazard analysis methods was sent to members of the scientific and technical community and decision makers. The report is addressed to decision makers with a modest scientific and technical background and to the scientific and technical community. Keywords: Seismic ground motion; Earthquakes; Seismic Hazards; Probability methods. (EDC).

Download or read book Deterministic Versus Probabilistic Seismic Hazard Analysis for Engineering written by Ellis L. Krinistsky and published by . This book was released on 1998* with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Probabilistic Seismic Hazards Update for LLNL written by and published by . This book was released on 2016 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fugro Consultants, Inc. (FCL) completed the Probabilistic Seismic Hazard Analysis (PSHA) performed for Building 332 at the Lawrence Livermore National Laboratory (LLNL), near Livermore, CA. The study performed for the LLNL site includes a comprehensive review of recent information relevant to the LLNL regional tectonic setting and regional seismic sources in the vicinity of the site and development of seismic wave transmission characteristics. The Seismic Source Characterization (SSC), documented in Project Report No. 2259-PR-02 (FCL, 2015b), and Ground Motion Characterization (GMC), documented in Project Report No. 2259-PR-06 (FCL, 2015a) were developed in accordance with ANS/ANSI 2.29- 2008 Level 2 PSHA guidelines. The ANS/ANSI 2.29-2008 Level 2 PSHA framework is documented in Project Report No. 2259-PR-05 (FCL, 2016a). The Hazard Input Document (HID) for input into the PSHA developed from the SSC and GMC is presented in Project Report No. 2259-PR-04 (FCL, 2016b). The site characterization used as input for development of the idealized site profiles including epistemic uncertainty and aleatory variability is presented in Project Report No. 2259-PR-03 (FCL, 2015c). The PSHA results are documented in Project Report No. 2259-PR-07 (FCL, 2016c).

Download or read book Non ergodic Probabilistic Seismic Hazard Analysis and Spatial Simulation of Variation in Ground Motion written by Melanie Anne Walling and published by . This book was released on 2009 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lawrence Livermore National Laboratory Probabilistic Seismic Hazard Codes Validation written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Probabilistic Seismic Hazard Analysis (PSHA) is a methodology that estimates the likelihood that various levels of earthquake-caused ground motion will be exceeded at a given location in a given future time-period. LLNL has been developing the methodology and codes in support of the Nuclear Regulatory Commission (NRC) needs for reviews of site licensing of nuclear power plants, since 1978. A number of existing computer codes have been validated and still can lead to ranges of hazard estimates in some cases. Until now, the seismic hazard community had not agreed on any specific method for evaluation of these codes. The Earthquake Engineering Research Institute (EERI) and the Pacific Engineering Earthquake Research (PEER) center organized an exercise in testing of existing codes with the aim of developing a series of standard tests that future developers could use to evaluate and calibrate their own codes. Seven code developers participated in the exercise, on a voluntary basis. Lawrence Livermore National laboratory participated with some support from the NRC. The final product of the study will include a series of criteria for judging of the validity of the results provided by a computer code. This EERI/PEER project was first planned to be completed by June of 2003. As the group neared completion of the tests, the managing team decided that new tests were necessary. As a result, the present report documents only the work performed to this point. It demonstrates that the computer codes developed by LLNL perform all calculations correctly and as intended. Differences exist between the results of the codes tested, that are attributed to a series of assumptions, on the parameters and models, that the developers had to make. The managing team is planning a new series of tests to help in reaching a consensus on these assumptions.

Download or read book An Introduction to Probabilistic Seismic Hazard Analysis written by J. Paul Guyer, P.E., R.A. and published by Guyer Partners. This book was released on 2020-07-22 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introductory technical guidance for civil, geotechnical and structural engineers interested in earthquake hazard analysis. Here is what is discussed: 1. OVERVIEW OF PROBABILISTIC SEISMIC HAZARD ANALYSIS (PSHA) METHODOLOGY 2. CHARACTERIZING SEISMIC SOURCES FOR PSHA 3. GROUND MOTION ATTENUATION CHARACTERIZATION FOR PSHA 4. TREATMENT OF SCIENTIFIC UNCERTAINTY IN PSHA 5. DEVELOPMENT OF SITE-SPECIFIC RESPONSE SPECTRA FROM PSHA 6. DEVELOPMENT OF ACCELEROGRAMS 7. SUMMARY OF STRENGTHS AND LIMITATIONS OF DSHA AND PSHA.

Download or read book Review of Recommendations for Probabilistic Seismic Hazard Analysis written by National Research Council (U.S.). Panel on Seismic Hazard Evaluation and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Site specific Probabilistic Seismic Hazard Analyses for the Idaho National Engineering Laboratory written by and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Site specific Probabilistic Seismic Hazard Analyses for the Idaho National Engineering Laboratory Volume 2 written by and published by . This book was released on 1996 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: The identification of seismic sources is often based on a combination of geologic and tectonic considerations and patterns of observed seismicity; hence, a historical earthquake catalogue is important. A historical catalogue of earthquakes of approximate magnitude (M) 2.5 and greater for the time period 1850 through 1992 was compiled for the INEL region. The primary data source used was the Decade of North American Geology (DNAG) catalogue for the time period from about 1800 through 1985 (Engdahl and Rinehart, 1988). A large number of felt earthquakes, especially prior to the 1970s̀, which were below the threshold of completeness established in the DNAG catalogue (Engdahl and Rinehart, 1991), were taken from the state catalogues compiled by Stover and colleagues at the National Earthquake Information Center (NEIC) and combined with the DNAG catalogue for the INEL region. The state catalogues were those of Idaho, Montana, Nevada, Utah, and Wyoming. NEICs̀ Preliminary Determination of Epicenters (PDE) and the state catalogues compiled by the Oregon Department of Geology and Mineral Industries (DOGAMI), and the University of Nevada at Reno (UNR) were also used to supplement the pre-1986 time period. A few events reanalyzed by Jim Zollweg (Boise State University, written communication, 1994) were also modified in the catalogue. In the case of duplicate events, the DNAG entry was preferred over the Stover et al. entry for the period 1850 through 1985. A few events from Berg and Baker (1963) were also added to the catalogue. This information was and will be used in determining the seismic risk of buildings and facilities located at the Idaho National Engineering Laboratory.

Download or read book Nederlandsche Stoomboot Reederij written by and published by . This book was released on 1912 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Probabilistic Assessments of the Seismic Stability of Slopes written by Yubing Wang and published by . This book was released on 2014 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthquake-induced landslides are a significant seismic hazard that can generate large economic losses. Predicting earthquake-induced landslides often involves an assessment of the expected sliding displacement induced by the ground shaking. A deterministic approach is commonly used for this purpose. This approach predicts sliding displacements using the expected ground shaking and the best-estimate slope properties (i.e., soil shear strengths, ground water conditions and thicknesses of sliding blocks), and does not consider the aleatory variability in predictions of ground shaking or sliding displacements or the epistemic uncertainties in the slope properties. In this dissertation, a probabilistic framework for predicting the sliding displacement of flexible sliding masses during earthquakes is developed. This framework computes a displacement hazard curve using: (1) a ground motion hazard curve from a probabilistic seismic hazard analysis, (2) a model for predicting the dynamic response of the sliding mass, (3) a model for predicting the sliding response of the sliding mass, and (4) a logic tree that incorporates the uncertainties in the various input parameters. The developed probabilistic framework for flexible sliding masses is applied to a slope at a site in California. The results of this analysis show that the displacements predicted by the probabilistic approach are larger than the deterministic approach due to the influence of the uncertainties in the slope properties. Reducing these uncertainties can reduce the predicted displacements. Regional maps of seismic landslide potential are used in land-use planning and to identify zones that require detailed, site-specific studies. Current seismic landslide hazard mapping efforts typically utilize deterministic approaches to estimate rigid sliding block displacements and identify potential slope failures. A probabilistic framework that uses displacement hazard curves and logic-tree analysis is developed for regional seismic landslide mapping efforts. A computationally efficient approach is developed that allows the logic-tree approach to be applied for regional analysis. Anchorage, Alaska is used as a study area to apply the developed approach. With aleatory variability and epistemic uncertainties considered, the probabilistic map shows that the area of high/very high hazard of seismic landslides increases by a factor of 3 compared with a deterministic map.