Download or read book An Investigation Into Earthquake Ground Motion Characteristics in Japan with Emphasis on the 2011 M9 0 Tohoku Earthquake written by Hadi Ghofrani and published by . This book was released on 2012 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this integrated study, ground-motion characteristics of one of the most devastating earthquakes in history, the 11th March 2011 Tohoku-oki earthquake (moment magnitude (M) 9.0), are investigated. The investigation centers on developing empirical and simulated-based ground-motion prediction models for this earthquake. These models allow prediction of expected ground motions from large interface (mega-thrust) earthquakes and estimation of their variability due to variability in input parameters, specifically source characteristics (e.g. slip distributions), propagation path, and site effects. This research work can be divided into two main parts. In the first part, the influence of regional geologic structure, in particular the attenuation effects of seismic wave amplitudes with distance while traveling through a volcanic arc region (forearc versus backarc attenuation), is empirically evaluated using regression analysis of Fourier amplitude spectra (FAS) of well-recorded Japanese events. It is concluded that the separation of forearc and backarc travel paths results in a significant reduction in the standard deviation (sigma) of ground motion predictions (by as much as 0.05 log10 units). The distinction between forearc and backarc attenuation has important implications for hazard analysis in subduction regions. In the second part, the ground-motion characteristics of the 2011 Tohoku earthquake are investigated. First, site response in Japan is thoroughly characterized using thousands of surface and borehole recordings. Site amplification effects are found to be very strong at most sites, often exceeding a factor of five. It is concluded that the large observed groundmotion amplitudes at high frequencies during the Tohoku event are mainly due to the prevalence of shallow-soil conditions in Japan that amplified higher frequencies. A stochastic finite-fault model was used to simulate average response spectra of the Tohoku earthquake, for comparison with observed ground motions. The simulation results show that use of a source model comprised of several rupture asperities produces ground motions that are in good agreement with the observations at both high- and low-frequency ranges, and also provides an accurate description of the temporal characteristics of observed ground motions. The calibrated model for the 2011 Tohoku earthquake can be utilized to predict ground motions for future large events in other regions, such as the Cascadia region of North America, by suitable modifications of the regional attenuation and site parameters.
Download or read book Preliminary Reconnaissance Report of the 2011 Tohoku Chiho Taiheiyo Oki Earthquake written by Architectural Institute of Japan and published by Springer. This book was released on 2012-09-03 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Devastating damage in the Tohoku region of Japan occurred during and after the earthquake off the Pacific coast of Tohoku earthquake on March 11, 2011. The AIJ (Architectural Institute of Japan) dispatched reconnaissance teams into the field to obtain basic facts on the damage to buildings due to the massive ground motions and resultant tsunami. Their mission included collecting information on the characteristics of the earthquake itself and the observed major ground motions and tsunamis throughout the area. For the structural damage investigation, buildings are classified by their type of construction, namely, steel buildings, reinforced concrete buildings, wooden houses, etc. along with descriptions of special features for each category of building type. The report summarizes damage associated with ground failures including landslide and liquefaction as well as non-structural damages such as to equipment and facilities, partitioning walls and ceilings, and functional failures in skyscrapers. Also brief description of the Japanese Seismic Design Code will be provided in the Appendix. A proposed scheme of anti-tsunami design for buildings is also included.
Download or read book Preliminary Reconnaissance Report of the 2011 Tohoku Chiho Taiheiyo Oki Earthquake written by Architectural Institute of Japan and published by Springer Science & Business Media. This book was released on 2012-09-03 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Devastating damage in the Tohoku region of Japan occurred during and after the earthquake off the Pacific coast of Tohoku earthquake on March 11, 2011. The AIJ (Architectural Institute of Japan) dispatched reconnaissance teams into the field to obtain basic facts on the damage to buildings due to the massive ground motions and resultant tsunami. Their mission included collecting information on the characteristics of the earthquake itself and the observed major ground motions and tsunamis throughout the area. For the structural damage investigation, buildings are classified by their type of construction, namely, steel buildings, reinforced concrete buildings, wooden houses, etc. along with descriptions of special features for each category of building type. The report summarizes damage associated with ground failures including landslide and liquefaction as well as non-structural damages such as to equipment and facilities, partitioning walls and ceilings, and functional failures in skyscrapers. Also brief description of the Japanese Seismic Design Code will be provided in the Appendix. A proposed scheme of anti-tsunami design for buildings is also included.
Download or read book Ground Motion Seismology written by Kazuki Koketsu and published by Springer Nature. This book was released on 2021-01-04 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explains the physics behind seismic ground motions and seismic waves to graduate and upper undergraduate students as well as to professionals. Both seismic ground motions and seismic waves are terms for “shaking” due to earthquakes, but it is common that shaking in the near-field of an earthquake source is called seismic ground motion and in the far-field is called seismic waves. Seismic ground motion is often described by the tensor formula based on the representation theorem, but in this book explicit formulation is emphasized beginning with Augustus Edward Hough Love (1863 – 1940). The book also explains in depth the equations and methods used for analysis and computation of shaking close to an earthquake source. In addition, it provides in detail information and knowledge related to teleseismic body waves, which are frequently used in the analysis of the source of an earthquake.
Download or read book Earthquake Engineering Handbook written by Charles Scawthorn and published by CRC Press. This book was released on 2002-09-27 with total page 1508 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthquakes are nearly unique among natural phenomena - they affect virtually everything within a region, from massive buildings and bridges, down to the furnishings within a home. Successful earthquake engineering therefore requires a broad background in subjects, ranging from the geologic causes and effects of earthquakes to understanding the imp
Download or read book Mega Quakes Cascading Earthquake Hazards and Compounding Risks written by Katsuichiro Goda and published by Frontiers Media SA. This book was released on 2018-03-15 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Large-scale earthquake hazards pose major threats to modern society, generating casualties, disrupting socioeconomic activities, and causing enormous economic loss across the world. Events, such as the 2004 Indian Ocean tsunami and the 2011 Tohoku earthquake, highlighted the vulnerability of urban cities to catastrophic earthquakes. Accurate assessment of earthquake-related hazards (both primary and secondary) is essential to mitigate and control disaster risk exposure effectively. To date, various approaches and tools have been developed in different disciplines. However, they are fragmented over a number of research disciplines and underlying assumptions are often inconsistent. Our society and infrastructure are subjected to multiple types of cascading earthquake hazards; therefore, integrated hazard assessment and risk management strategy is needed for mitigating potential consequences due to multi-hazards. Moreover, uncertainty modeling and its impact on hazard prediction and anticipated consequences are essential parts of probabilistic earthquake hazard and risk assessment. The Research Topic is focused upon modeling and impact assessment of cascading earthquake hazards, including mainshock ground shaking, aftershock, tsunami, liquefaction, and landslide.
Download or read book Extreme Natural Hazards Disaster Risks and Societal Implications written by Alik Ismail-Zadeh and published by Cambridge University Press. This book was released on 2014-04-17 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: A unique interdisciplinary approach to disaster risk research, including global hazards and case-studies, for researchers, graduate students and professionals.
Download or read book Studies on the 2011 Off the Pacific Coast of Tohoku Earthquake written by Hiroshi Kawase and published by Springer Science & Business Media. This book was released on 2013-09-20 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Tohoku earthquake on March 11, 2011, officially designated the “Off the Pacific Coast of Tohoku, Japan Earthquake” by the Japan Meteorological Agency caused an unprecedentedly severe disaster in the northeastern part (Tohoku) of the Japanese island of Honshu. This first volume of the series Natural Disaster Science and Mitigation Engineering: DPRI Reports covers various aspects of investigations of scientific findings as well as issues related to the disaster and the subsequent evacuation necessitated by the earthquake. The series presents recent advances in natural disaster sciences and mitigation technologies developed in Japan, which will be valuable for the mitigation of disasters of a similar kind resulting from future events around the world.
Download or read book Earthquake Motion and Ground Conditions written by 日本建築学会 and published by . This book was released on 1993 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Learning from Megadisasters written by Federica Ranghieri and published by World Bank Publications. This book was released on 2014-06-26 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: While not all natural disasters can be avoided, their impact on a population can be mitigated through effective planning and preparedness. These are the lessons to be learned from Japan's own megadisaster: the Great East Japan Earthquake of 2011, the fi rst disaster ever recorded that included an earthquake, a tsunami, a nuclear power plant accident, a power supply failure, and a large-scale disruption of supply chains. It is a sad fact that poor communities are often hardest hit and take the longest to recover from disaster. Disaster risk management (DRM) should therefore be taken into account as a major development challenge, and countries must shift from a tradition of response to a culture of prevention and resilience. Learning from Megadisasters: Lessons from the Great East Japan Earthquake consolidates a set of 36 Knowledge Notes, research results of a joint study undertaken by the Government of Japan and the World Bank. These notes highlight key lessons learned in seven DRM thematic clusters—structural measures; nonstructural measures; emergency response; reconstruction planning; hazard and risk information and decision making; the economics of disaster risk, risk management, and risk fi nancing; and recovery and relocation. Aimed at sharing Japanese cutting-edge knowledge with practitioners and decision makers, this book provides valuable guidance to other disaster-prone countries for mainstreaming DRM in their development policies and weathering their own natural disasters.
Download or read book Tsunami Generation and Propagation written by Tatsuhiko Saito and published by Springer. This book was released on 2019-01-23 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces a framework of tsunami modelling from generation to propagation, aimed at application to the new observation started in Japan after the devastating tsunami of the 2011 Tohoku-Oki earthquake. About 150 seismic and tsunami sensors were deployed in a wide region off the Pacific coast of eastern Japan in order to catch tsunami generation inside the focal area, which makes a clear departure from conventional observations that detect tsunamis far from the source region. In order to exploit the full potential of this new observation system, it is not enough to model tsunami generation simply by static sea-bottom deformation caused by an earthquake. This book explains dynamic tsunami generation and sea-bottom deformation by kinematic earthquake faulting, in which seismic and acoustic waves are also included in addition to static sea-bottom deformation. It then systematically derives basic tsunami equations from the fundamental equations of motions. The author also illustrates the details of numerical schemes and their applications to tsunami records, making sound linkages among these topics to naturally understand how a tsunami is physically or mathematically described. This book will be a comprehensive guide for graduate students and young researchers to start their research activities smoothly.
Download or read book Measuring Modeling and Predicting the Seismic Site Effect written by Yefei Ren and published by Frontiers Media SA. This book was released on 2024-01-25 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: As recognized universally by both seismology and earthquake engineering communities, the amplitude and frequency content of ground motions are influenced by local site effects, including the effects of near-surface geologic materials, surface topographic and basin effects, and so on. Strong linkage between seismic site effect and earthquake damage has been commonly demonstrated from many past earthquakes. Therefore, quantitative and reliable evaluation of the seismic site effect is one of the crucial aspects in seismic hazard assessment and risk mitigation. With the significant advancement of modern seismic monitoring networks and arrays, huge amounts of high-quality seismic records are now being accumulated. This encourages us to measure the site responses and its associated uncertainty for selected seismic stations by some record-dependent approaches, such as horizontal-to-vertical spectral ratio (HVSR) measurements, generalized spectral inversion (GIT) methods, etc. Machine learning techniques also show significant promise in characterization of the near-surface geologic properties and prediction of site response. These data-driven approaches help us to better understand the physics of spatial and temporal variabilities of ground motions. Due to more and more site-specific data being captured, invoking non-ergodic assumptions in seismic response analysis has recently been a topic of great interest in the community. For specific site response analysis, numerical simulations are carried out to model the dynamic process of seismic waves propagating and scattering in the subsurface strata. With development of modeling capacity, great efforts have been taken to evaluate quantitatively the complex 2D and 3D effects on seismic site response.
Download or read book Earthquake Data in Engineering Seismology written by Sinan Akkar and published by Springer Science & Business Media. This book was released on 2011-01-03 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses current activities in strong-motion networks around the globe, covering issues related to designing, maintaining and disseminating information from these arrays. The book is divided into three principal sections. The first section includes recent developments in regional and global ground-motion predictive models. It presents discussions on the similarities and differences of ground motion estimations from these models and their application to design spectra as well as other novel procedures for predicting engineering parameters in seismic regions with sparse data. The second section introduces topics about the particular methodologies being implemented in the recently established global and regional strong-motion databanks in Europe to maintain and disseminate the archived accelerometric data. The final section describes major strong-motion arrays around the world and their historical developments. The last three chapters of this section introduce projects carried out within the context of arrays deployed for seismic risk studies in metropolitan areas. Audience: This timely book will be of particular interest for researchers who use accelerometric data extensively to conduct studies in earthquake engineering and engineering seismology.
Download or read book Bulletin of the Imperial Earthquake Investigation Committee written by Shinsai Yobō Chōsakai (Japan) and published by . This book was released on 1907 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in ocean bottom seismology written by Francisco Javier Nuñez-Cornu and published by Frontiers Media SA. This book was released on 2023-03-27 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Subduction Dynamics written by Gabriele Morra and published by John Wiley & Sons. This book was released on 2015-09-23 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Subduction dynamics has been actively studied through seismology, mineral physics, and laboratory and numerical experiments. Understanding the dynamics of the subducting slab is critical to a better understanding of the primary societally relevant natural hazards emerging from our planetary interior, the megathrust earthquakes and consequent tsunamis. Subduction Dynamics is the result of a meeting that was held between August 19 and 22, 2012 on Jeju island, South Korea, where about fifty researchers from East Asia, North America and Europe met. Chapters treat diverse topics ranging from the response of the ionosphere to earthquake and tsunamis, to the origin of mid-continental volcanism thousands kilometers distant from the subduction zone, from the mysterious deep earthquakes triggered in the interior of the descending slabs, to the detailed pattern of accretionary wedges in convergent zones, from the induced mantle flow in the deep mantle, to the nature of the paradigms of earthquake occurrence, showing that all of them ultimately are due to the subduction process. Volume highlights include: Multidisciplinary research involving geology, mineral physics, geophysics and geodynamics Extremely large-scale numerical models with sliate-of-the art high performance computing facilities Overview of exceptional three-dimensional dynamic representation of the evolution of the Earth interiors and of the earthquake and subsequent tsunami dynamics Global risk assessment strategies in predicting natural disasters This volume is a valuable contribution in earth and environmental sciences that will assist with understanding the mechanisms behind plate tectonics and predicting and mitigating future natural hazards like earthquakes, volcanoes and tsunamis.
Download or read book The Fukushima and Tohoku Disaster written by School of Societal Safety Sciences and published by Butterworth-Heinemann. This book was released on 2017-10-26 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Fukushima and Tohoku Disaster: A Review of the Five-Year Reconstruction Efforts covers the outcome of the response, five years later, to the disasters associated with the Great East Japan earthquake on March 11, 2011. The 3.11 disaster, as it is referred to in Japan, was a complex accident, the likes of which humans had never faced before. This book evaluates the actions taken during and after the earthquake, tsunami, and nuclear accident, for which the Japanese government and people were not prepared. The book also provides recommendations for preparing and responding to disasters for those working and living in disaster-prone areas, making it a vital resource for disaster managers and government agencies. Includes guidelines for governments, communities and businesses in areas where similar complex disasters are likely to occur Provides information, propositions, suggestions and advice from the people that were involved in making suggestions to the Japanese government Features case studies (both pre- and post-disaster) of three simultaneous disasters: the Great East Japan earthquake, the resulting tsunami, and the Fukushima Nuclear Power Plant disaster
