Synchronization and Triggering: from Fracture to Earthquake Processes

by De Rubeis, Valerio; Czechowski, Zbigniew; Teisseyre, Roman

• ISBN13: 9783642122996
• ISBN10: 364212299X
• Format: Hardcover
• Copyright: 2010-10-11
• Publisher: Springer Verlag

Summary

This monograph contains experimental and theoretical considerations on synchronization and triggering in laboratory fracture experiments and in earthquake processes. Non-linear dynamics and physics of rotation motions reveal such ordering in geophysical processes and observed time series. Presented experiments with electromagnetic and mechanical forcing present synchronization of the slip instabilities observed as acoustic burst emission. New observational results, based on the net of broadband seismic stations, indicate the hidden periodicities, multiple coherence effects in the low-frequency microseismic oscillations observed tens of hours before the earthquakes. These results are supported by observational evidence on synchronization between shear oscillations and rotation motions in microseismic field before earthquakes.

Table of Contents

Theoretical Studies
Nonlinear Dynamics as a Tool for Revealing Synchronization and Ordering in Geophysical Time Series: Application to Caucasus Seismicity	p. 3
Models of Stick-Slip Motion: Impact of Periodic Forcing	p. 23
Shear Oscillations, Rotations and Interactions in Asymmetric Continuum	p. 35
Processes in Micro-Fracture Continuum	p. 51
On a Simple Stochastic Cellular Automaton with Avalanches: Simulation and Analytical Results	p. 63
Ito Equations as Macroscopic Stochastic Models of Geophysical Phenomena - Construction of the Models on the Basis of Time Series	p. 77
The Importance of Privilege for the Appearance of Long-Tail Distributions	p. 97
Laboratory Experiments
Triggering and Synchronization of Stick-Slip: Experiments on Spring-Slider System	p. 123
Oscillating Load-Induced Acoustic Emission in Laboratory Experiment	p. 165
Acoustic Emission Dynamics Initiated by Fluid Infusion on Laboratory Scale	p. 179
Acoustic Emission Spectra Classification from Rock Samples of Etna Basalt in Deformation-Decompression Laboratory Experiments	p. 201
Phase-Shifted Fields: Some Experimental Evidence	p. 213
Field Observations
Periodical Oscillations of Microseisms before the Sumatra Earthquake of December 26, 2004	p. 223
Synchronizations of Microseismic Oscillations as the Indicators of the Instability of a Seismically Active Region	p. 243
Multifractal Parameters of Low-Frequency Microseisms	p. 253
Changes in Dynamics of Seismic Processes Around Enguri High Dam Reservoir Induced by Periodic Variation of Water Level	p. 273
Earthquakes' Signatures in Dynamics of Water Level Variations in Boreholes	p. 287
Detecting Quasi-Harmonic Factors Synchronizing Relaxation Processes: Application to Seismology	p. 305
Stacked Analysis of Earthquake Sequences: Statistical Space-Time Definition of Clustering and Omori Law Behavior	p. 323
Dynamical Changes Induced by Strong Electromagnetic Discharges in Earthquakes' Waiting Time Distribution at the Bishkek Test Area (Central Asia)	p. 339
Index	p. 361
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