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Global Seismicity Dynamics and Data-Driven Science

2020-10-07 Science
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Release : 2020-10-07
Genre : Science
Kind : eBook
Book Rating : 09X/5 ( reviews)

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Book Synopsis Global Seismicity Dynamics and Data-Driven Science by : Mitsuhiro Toriumi

Download or read book Global Seismicity Dynamics and Data-Driven Science written by Mitsuhiro Toriumi. This book was released on 2020-10-07. Available in PDF, EPUB and Kindle. Book excerpt: The recent explosion of global and regional seismicity data in the world requires new methods of investigation of microseismicity and development of their modelling to understand the nature of whole earth mechanics. In this book, the author proposes a powerful tool to reveal the characteristic features of global and regional microseismicity big data accumulated in the databases of the world. The method proposed in this monograph is based on (1) transformation of stored big data to seismicity density data archives, (2) linear transformation of microseismicity density data matrixes to correlated seismicity matrixes by means of the singular value decomposition method, (3) time series analyses of globally and regionally correlated seismicity rates, and (4) the minimal non-linear equations approximation of their correlated seismicity rate dynamics. Minimal non-linear modelling is the manifestation for strongly correlated seismicity time series controlled by Langevin-type stochastic dynamic equations involving deterministic terms and random Gaussian noises. A deterministic term is composed minimally with correlated seismicity rate vectors of a linear term and of a term with a third exponent. Thus, the dynamics of correlated seismicity in the world contains linearly changing stable nodes and rapid transitions between them with transient states. This book contains discussions of future possibilities of stochastic extrapolations of global and regional seismicity in order to reduce earthquake disasters worldwide. The dataset files are available online and can be downloaded at springer.com.

Physics of Geochemical Mechanics and Deep Neural Network Modeling with Diffusion Augmentation

2024-12-07 Computers
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Release : 2024-12-07
Genre : Computers
Kind : eBook
Book Rating : 754/5 ( reviews)

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Book Synopsis Physics of Geochemical Mechanics and Deep Neural Network Modeling with Diffusion Augmentation by : Mitsuhiro Toriumi

Download or read book Physics of Geochemical Mechanics and Deep Neural Network Modeling with Diffusion Augmentation written by Mitsuhiro Toriumi. This book was released on 2024-12-07. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a new data augmentation method based on the local stochastic distribution patterns in natural time series data of global and regional seismicity rates and their correlated seismicity rates. The augmentation procedure is called the diffusion - denoising augmentation method from the local Gaussian distribution of segmented data of long time series. This method makes it possible to apply the deep machine learning necessary to neural network prediction of rare large earthquakes in the global and regional earth system. The book presents the physical background of the processes showing the development of characteristic features in the global and regional correlated seismicity dynamics, which are manifested by the successive time series of 1990-2023. Physical processes of the correlated global seismicity change and the earth's rotation, fluctuation of plate motion, and the earth's ellipsoid ratio (C20 of satellite gravity change) are proposed in this book. The equivalency between Gaussian seismicity network dynamics and the minimal nonlinear dynamics model of correlated seismicity rates is also provided. In addition, the book contains simulated models of the shear crack jog wave, precipitation of minerals in the jog, and jog accumulation inducing shear crack propagation which leads to earthquakes in the plate boundary rocks under permeable fluid flow.

Geochemical Mechanics and Deep Neural Network Modeling

2022-08-19 Science
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Release : 2022-08-19
Genre : Science
Kind : eBook
Book Rating : 595/5 ( reviews)

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Book Synopsis Geochemical Mechanics and Deep Neural Network Modeling by : Mitsuhiro Toriumi

Download or read book Geochemical Mechanics and Deep Neural Network Modeling written by Mitsuhiro Toriumi. This book was released on 2022-08-19. Available in PDF, EPUB and Kindle. Book excerpt: The recent understandings about global earth mechanics are widely based on huge amounts of monitoring data accumulated using global networks of precise seismic stations, satellite monitoring of gravity, very large baseline interferometry, and the Global Positioning System. New discoveries in materials sciences of rocks and minerals and of rock deformation with fluid water in the earth also provide essential information. This book presents recent work on natural geometry, spatial and temporal distribution patterns of various cracks sealed by minerals, and time scales of their crack sealing in the plate boundary. Furthermore, the book includes a challenging investigation of stochastic earthquake prediction testing by means of the updated deep machine learning of a convolutional neural network with multi-labeling of large earthquakes and of the generative autoencoder modeling of global correlated seismicity. Their manifestation in this book contributes to the development of human society resilient from natural hazards. Presented here are (1) mechanics of natural crack sealing and fluid flow in the plate boundary regions, (2) large-scale permeable convection of the plate boundary, (3) the rapid process of massive extrusion of plate boundary rocks, (4) synchronous satellite gravity and global correlated seismicity, (5) Gaussian network dynamics of global correlated seismicity, and (6) prediction testing of plate boundary earthquakes by machine learning and generative autoencoders.

Foundations of Modern Global Seismology

2020-10-13 Science
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Release : 2020-10-13
Genre : Science
Kind : eBook
Book Rating : 170/5 ( reviews)

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Book Synopsis Foundations of Modern Global Seismology by : Charles J. Ammon

Download or read book Foundations of Modern Global Seismology written by Charles J. Ammon. This book was released on 2020-10-13. Available in PDF, EPUB and Kindle. Book excerpt: Modern Global Seismology, Second Edition, is a complete, self-contained primer on seismology, featuring extensive coverage of all related aspects—from observational data through prediction—and emphasizing the fundamental theories and physics governing seismic waves, both natural and anthropogenic. Based on thoroughly class-tested material, the text provides a unique perspective on Earth’s large-scale internal structure and dynamic processes, particularly earthquake sources, and the application of theory to the dynamic processes of the earth’s upper layer. This insightful new edition is designed for accessibility and comprehension for graduate students entering the field. Exploration seismologists will also find it an invaluable resource on topics such as elastic-wave propagation, seismic instrumentation, and seismogram analysis. Includes more than 400 illustrations, from both recent and traditional research articles, to help readers visualize mathematical relationships, as well as boxed features to explain advanced topics Offers incisive treatments of seismic waves, waveform evaluation and modeling, and seismotectonics, as well as quantitative treatments of earthquake source mechanics and numerous examples of modern broadband seismic recordings Covers current seismic instruments and networks and demonstrates modern waveform inversion methods Includes extensive, updated references for further reading new to this edition Features reorganized chapters split into two sections, beginning with introductory content such as tectonics and seismogram analysis, and moving on to more advanced topics, including seismic wave excitation and propagation, multivariable and vector calculus, and tensor approaches Completely updated references and figures to bring the text up to date Includes all-new sections on recent advancements and to enhance examples and understanding Split into shorter chapters to allow more flexibility for instructors and easier access for researchers, and includes exercises

Best Practices in Physics-based Fault Rupture Models for Seismic Hazard Assessment of Nuclear Installations

2017-12-20 Science
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Release : 2017-12-20
Genre : Science
Kind : eBook
Book Rating : 095/5 ( reviews)

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Book Synopsis Best Practices in Physics-based Fault Rupture Models for Seismic Hazard Assessment of Nuclear Installations by : Luis A. Dalguer

Download or read book Best Practices in Physics-based Fault Rupture Models for Seismic Hazard Assessment of Nuclear Installations written by Luis A. Dalguer. This book was released on 2017-12-20. Available in PDF, EPUB and Kindle. Book excerpt: This volume collects several extended articles from the first workshop on Best Practices in Physics-based Fault Rupture Models for Seismic Hazard Assessment of Nuclear Installations (BestPSHANI). Held in 2015, the workshop was organized by the IAEA to disseminate the use of physics-based fault-rupture models for ground motion prediction in seismic hazard assessments (SHA). The book also presents a number of new contributions on topics ranging from the seismological aspects of earthquake cycle simulations for source scaling evaluation, seismic source characterization, source inversion and physics-based ground motion modeling to engineering applications of simulated ground motion for the analysis of seismic response of structures. Further, it includes papers describing current practices for assessing seismic hazard in terms of nuclear safety in low seismicity areas, and proposals for physics-based hazard assessment for critical structures near large earthquakes. The papers validate and verify the models by comparing synthetic results with observed data and empirical models. The book is a valuable resource for scientists, engineers, students and practitioners involved in all aspects of SHA.

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