Seismology

Seismology
Author: Bogdan Felix Apostol
Publsiher: Unknown
Total Pages: 345
Release: 2020
Genre: Science
ISBN: 1536185590

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"The book offers a comprehensive physical theory of the earthquakes. The presentation level is rather mathematical, but thorough physical explanations are provided everywhere. We do not know where and when and how great an earthquake occurs. The seismic events have a statistical character. Statistical Seismology is discussed extensively in this book, centered on the famous Gutenberg-Richter, Omori and Bath statistical laws. The earthquakes may be correlated, foreshocks may herald a main shock, aftershocks may follow a main shock. The pattern of such correlations, their extension in time and magnitude are discussed in this book. The earthquakes are produced by forces acting for a short time in a localized focal region placed inside the Earth. These forces give rise to elastic deformations and elastic waves, which arrive at Earth' surface as earthquakes. The nature of these forces and their effects are discussed in this book. Any earthquake begins by a feeble tremor, the so-called P and S seismic waves, followed by a large, main shock, which looks like a wall with a long tail. This book explains why it is so. We cannot predict the occurrence of the earthquakes. But we can know something about them. For instance, there exist seismographs, a sort of pendulums, which record the ground displacement. There exist agencies which tell us the earthquake magnitude, its energy, location, fault slip, by reading the seismograms. We may wish to get such information by ourselves, almost in real time, knowing the seismograph recordings, to be independent of the seismological agencies. This book teaches us how to do that. The book describes the accumulation of the seismic energy in the focal region, its release, the shape and strength of the ground displacement. It is shown that the seismic faults may give rise to rather complicated tensorial forces, which account both for the static deformations of the Earth's surface and for the seismic waves produced in an earthquake. A model of energy accumulation in the earthquake focus is formulated and used to derive the statistical Gutenberg-Richter laws. These laws are used to analize the statistics of the seismic events in Vrancea, Romania, as an example. A special emphasis is given to the short-term seismic activity. The book introduces the point tensorial force of the seismic faults and employs it to present both the static deformation of the Earth's crust in epicentral regions and the seismic waves and the main shock which appear on any typical seismogram. This later point is the solution of the so-called Lamb seismological problem. The book describes the determination of the seismic-moment tensor, earthquake magnitude, the volume of the focal region, the duration of the seismic activity in the focus, the fault orientation and the fault slip from measurements of the seismic waves at the Earth's surface. This is the solution of the inverse seismological problem. A special point is a qualitative estimation of these parameters which can be practised by everyone in real time. The book presents the vibrations of the Earth viewed as a solid sphere and the vibrations of an elastic half-space. The static deformations of the elastic half-space under the action of point forces are also included. Finally, earthquake correlations, Bath's law and earthquake entropy are discussed. The book is an original monograph of Seismology, intended for the use of the students, researchers and the public who wish to become familiar with the physics and mathematics of the earthquakes. It provides the understanding of the earthquakes and specific knowledge we may have of them"--

Earthquakes Risk Detection Warning and Research

Earthquakes  Risk  Detection  Warning  and Research
Author: Anonim
Publsiher: DIANE Publishing
Total Pages: 135
Release: 2024
Genre: Electronic Book
ISBN: 9781437928075

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Perspectives on European Earthquake Engineering and Seismology

Perspectives on European Earthquake Engineering and Seismology
Author: Atilla Ansal
Publsiher: Springer
Total Pages: 650
Release: 2014-09-01
Genre: Technology & Engineering
ISBN: 9783319071183

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This book collects 5 keynote and 15 topic lectures presented at the 2nd European Conference on Earthquake Engineering and Seismology (2ECEES), held in Istanbul, Turkey, from August 24 to 29, 2014. The conference was organized by the Turkish Earthquake Foundation - Earthquake Engineering Committee and Prime Ministry, Disaster and Emergency Management Presidency under the auspices of the European Association for Earthquake Engineering (EAEE) and European Seismological Commission (ESC). The book’s twenty state-of-the-art papers were written by the most prominent researchers in Europe and address a comprehensive collection of topics on earthquake engineering, as well as interdisciplinary subjects such as engineering seismology and seismic risk assessment and management. Further topics include engineering seismology, geotechnical earthquake engineering, seismic performance of buildings, earthquake-resistant engineering structures, new techniques and technologies and managing risk in seismic regions. The book also presents the Third Ambraseys Distinguished Award Lecture given by Prof. Robin Spence in honor of Prof. Nicholas N. Ambraseys. The aim of this work is to present the state-of-the art and latest practices in the fields of earthquake engineering and seismology, with Europe’s most respected researchers addressing recent and ongoing developments while also proposing innovative avenues for future research and development. Given its cutting-edge content and broad spectrum of topics, the book offers a unique reference guide for researchers in these fields. Audience: This book is of interest to civil engineers in the fields of geotechnical and structural earthquake engineering; scientists and researchers in the fields of seismology, geology and geophysics. Not only scientists, engineers and students, but also those interested in earthquake hazard assessment and mitigation will find in this book the most recent advances.

International Handbook of Earthquake Engineering Seismology Part B

International Handbook of Earthquake   Engineering Seismology  Part B
Author: William H.K. Lee,Hiroo Kanamori,Paul Jennings,Carl Kisslinger
Publsiher: Elsevier
Total Pages: 1032
Release: 2003-07-23
Genre: Science
ISBN: 9780080489230

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The two volume International Handbook of Earthquake and Engineering Seismology represents the International Association of Seismology and Physics of the Earth's Interior's (IASPEI) ambition to provide a comprehensive overview of our present knowledge of earthquakes and seismology. This state-of-the-art work is the only reference to cover all aspects of seismology--a "resource library" for civil and structural engineers, geologists, geophysicists, and seismologists in academia and industry around the globe.Part B, by more than 100 leading researchers from major institutions of science around the globe, features 34 chapters detailing strong-motion seismology, earthquake engineering, quake prediction and hazards mitigation, as well as detailed reports from more than 40 nations. Also available is The International Handbook of Earthquake and Engineering Seismology, Part A. Authoritative articles by more than 100 leading scientists Extensive glossary of terminology plus 2000+ biographical sketches of notable seismologists

The USGS Earthquake Hazards Program in NEHRP Investing in a Safer Future

The USGS Earthquake Hazards Program in NEHRP  Investing in a Safer Future
Author: Anonim
Publsiher: Unknown
Total Pages: 6
Release: 2003
Genre: Earthquake hazard analysis
ISBN: UOM:39015085435744

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Earthquake Data in Engineering Seismology

Earthquake Data in Engineering Seismology
Author: Sinan Akkar,Polat Gülkan,Torild van Eck
Publsiher: Springer Science & Business Media
Total Pages: 276
Release: 2011-01-03
Genre: Nature
ISBN: 9789400701526

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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.

U S Earthquake Observatories

U S  Earthquake Observatories
Author: National Research Council (U.S.). Panel on National, Regional, and Local Seismograph Networks,Assembly of Mathematical and Physical Sciences (U.S.). Panel on National, Regional, and Local Seismograph Networks
Publsiher: Unknown
Total Pages: 156
Release: 1980
Genre: Seismological stations
ISBN: UCAL:B3667634

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And recommendations -- Goals for a national seismograph system for observations and research on earthquakes -- Benefits from enhanced monitoring and research on earthquakes -- Strengthening the present U.S. earthquake monitoring system -- Design of a new national system for studying earthquakes -- Optimum locations for components of the proposed United States seismograph system -- Instrumentation for the proposed United States seismograph system -- Upgraded earthquake data storage and retrieval -- Implementation and support.

International Handbook of Earthquake Engineering Seismology

International Handbook of Earthquake   Engineering Seismology
Author: William H.K. Lee,Paul Jennings,Carl Kisslinger,Hiroo Kanamori
Publsiher: Elsevier
Total Pages: 1200
Release: 2002-09-27
Genre: Science
ISBN: 0080489222

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Modern scientific investigations of earthquakes began in the 1880s, and the International Association of Seismology was organized in 1901 to promote collaboration of scientists and engineers in studying earthquakes. The International Handbook of Earthquake and Engineering Seismology, under the auspices of the International Association of Seismology and Physics of the Earth's Interior (IASPEI), was prepared by leading experts under a distinguished international advisory board and team of editors. The content is organized into 56 chapters and includes over 430 figures, 24 of which are in color. This large-format, comprehensive reference summarizes well-established facts, reviews relevant theories, surveys useful methods and techniques, and documents and archives basic seismic data. It will be the authoritative reference for scientists and engineers and a quick and handy reference for seismologists. Also available is The International Handbook of Earthquake and Engineering Seismology, Part B. Two CD-ROMs containing additional material packaged with the text